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A N T H O N Y L I F T G A T E S , I N C .
I N S TA L L AT I O NAND
O PE R AT I O NMAINTENANCE & TROUBLESHOOTING
I N S TA L L AT I O NAND
O PE R AT I O NMAINTENANCE & TROUBLESHOOTING
Anthony Liftgates, Inc.1037 W. Howard Street • P.O. Box 615 •
Pontiac, IL 61764-0615Ph: 815.842.3383 • Fax: 815.844.3612 • Toll
Free: 800.482.0003www.anthonyliftgates.com
For Magnum Tuckunder™ Hydraulic Liftgates®For Magnum Tuckunder™
Hydraulic Liftgates®
MODELS
MTU-GLR-3
MTU-GLR-4
KEEP IN VEHICLE WITH LIFTGATE
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General Information SectionIntroduction . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . 2Nomenclature . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . 4General Information
. . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation SectionGeneral Installation Information . . . . . .
. . . . . . . . . 6Installation Procedure . . . . . . . . . . . . .
. . . . . . . . . . 8Final Inspection Checklist . . . . . . . . . .
. . . . . . . . . 24Decals. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 25
Operation SectionGeneral Safety Operating Instructions . . . . .
. . . . 30Operating Instructions . . . . . . . . . . . . . . . . .
. . . . . 32
Maintenance SectionQuick Check Maintenance Guide . . . . . . . .
. . . . . 34Maintenance Procedures . . . . . . . . . . . . . . . .
. . . . 35
Safety SectionSafety . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . 40
Troubleshooting SectionTroubleshooting Guide . . . . . . . . . .
. . . . . . . . . . . 44
815-842-3383 1 Anthony Liftgates, Inc.
Contents
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Congratulations on selecting an AnthonyLiftgates Magnum
Tuckunder liftgate.Anthony liftgates are among the finest
lift-gates available on the market today. Toensure your liftgate
will perform to yourexpectations we have provided the follow-ing
manuals, designed to provide you withthe necessary instructions and
safety pre-cautions to install and operate theTuckunder models of
Anthony liftgates.
1. Installation, Operation, Troubleshooting,and Maintenance
manual forMTU-GLR Model Tuckunder Liftgates -Form No. MTU-GLR
IO-10/04
2. Parts manual for MTU-GLR ModelTuckunder Liftgates - Form No.
MTU-GLR P-10/04
Typical Anthony Liftgates’ Magnum TuckunderLiftgate.
This Installation, Operation, andMaintenance manual will provide
you easyto follow instructions, along with photosand illustrations.
We have included aseries of Tips, which will facilitate
theinstallation process. All Safety precau-tions have been clearly
identified anddetailed throughout each section.
In addition, a complete explanation of thesafety words and rules
are included in theSafety section of this manual. Please turnto
this section and read thoroughly beforeproceeding to the next
page.
At the bottom of each page is the AnthonyLiftgates Inc. Product
Support phone num-ber. If you are unclear about any of
theinstructions, please phone AnthonyLiftgates' Product
Support.
All Anthony Magnum Tuckunder model lift-gates are factory
assembled, tested, andenergized to assure the highest
qualityperformance standards. MTU-GLR lift-gates ship completely
assembled on skidsfor fast, clean, and easy installation.
MTU-1003
Anthony Liftgates, Inc. 2 815-842-3383
IntroductionGeneral Information Section
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Even though the following goes with-out saying, we feel
compelled to state:Anthony liftgates should only be installedby
those with sufficient skills to understandthe installation and
operation of the lift-gate, along with the equipment required
toinstall the liftgate. The installation instruc-tions in this
manual are intended to givetypical installation instructions to
theinstaller for both the operation and whatwe believe to be the
most desirablesequence of installation. These instruc-tions cannot
replace a qualified person, orclear thinking and the basic
knowledgethat must be possessed by the installer.
We urge the installer (or anyone else) tocall us if they have
any questions. Wehave qualified personnel at our Pontiac,Illinois,
plant to answer any questions thatyou may have. A detailed
discussion onthe phone can be far more satisfactorythan a detailed
written explanation.
It has been our experience that a knowl-edgeable journeyman
following theseinstallation instructions and observing theoperation
of the liftgate will have sufficientcomprehension of the liftgate
to enablethis person to troubleshoot and correct allnormal problems
that may be encoun-tered. However, again we urge you to callus at
the Pontiac, Illinois, plant if you findthe liftgate is not
operating properly or ifyou do not know how to make the neces-sary
repair.
If you have any doubts or questions, callus at:Anthony
Liftgates, Inc.1037 West Howard StreetPontiac, Illinois 61764(815)
842-3383www.anthonyliftgates.com
815-842-3383 3 Anthony Liftgates, Inc.
The success or failure of thisliftgate to properly and
effi-ciently operate will depend ona thorough and proper
instal-lation. Failure to read, under-stand, and follow the
installa-tion instructions and safetyrecommendations in thismanual
before installing theliftgate can result in seriousinjury or death.
Also readand understand the operatinginstructions in the
Operationsection.
When installed, this liftgatemust not alter nor preventvehicle
compliance to anyexisting state or federal stan-dards, and
especially FMVSS105. Each chassis manufac-turer’s
recommendationsshould be consulted for com-pliance. Also make sure
theweight of the liftgate and itsload will not overbalance
thetruck, possibly raising thefront wheels off the ground.
DANGER
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Anthony Liftgates, Inc. 4 815-842-3383
Mounting Plate
Main Platform Section
GussetRubber Dock BumperPad
Gusset
Rubber Dock BumperPad
Floor Extension Assembly
Dock Bumper Corner Cap
Dock Bumper Corner Cap
Mounting Plate
Curbside
Streetside
Flip-over Platform Section
Lift Frame
Radius Arm
MTU-1004
Platform nomenclature.
Nomenclature
MTU-1005
High-PressureHose
High-PressureHose
Flow ControlValve
ControlBox Wiring
Pump
AdjustableReliefValve
10 amp Fuse
Motor StartSolenoid
Lowering ValveCartridgeand Coil
Raising ValveCartridgeand Coil
HydraulicCylinder
FillBreather
Port
Reservoir
ControlSwitch
ElectricMotor
Power unit nomenclature.
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Warranty
IMPORTANT NOTICEThe liftgate must be installedaccording to the
installationinstructions or the warranty willbe void. Unauthorized
modifica-tions of the liftgate may cause itto improperly operate or
causeother unforeseen problems ordangers. If any deviation isdeemed
necessary, written per-mission must first be obtainedfrom Anthony
Liftgates.
Fill out and mail in the Warranty Card tovalidate the warranty
on your liftgate.
Decals
Safety decals provide a vital role in helpingto reduce injuries
and/or possibly evendeath. To ensure the greatest level ofsafety,
all decals must be in place and leg-ible at all times. Remember, it
is the usersresponsibility to maintain these decals.For a complete
part number list and illus-tration of the decals used on the
MagnumTuckunder liftgate, refer to the Decals sec-tion in the Parts
manual for MTU-GLRModel Tuckunder Liftgates, form numberMTU-GLR
P-10/04.
For decal placement, also refer to theDecals section in this
manual.
For replacement decals contact:Anthony Liftgates, Inc.1037 West
Howard StreetPontiac, Illinois 61764(815)
842-3383www.anthonyliftgates.com
Ordering PartsWe manufacturer a quality liftgate thatrequires
very little maintenance or repair.However, should a part break,
becomedamaged, or worn our knowledgeable staffcan make sure you
receive the part(s) toput your liftgate back into operation.
For questions or to order parts, contact:Anthony Liftgates,
Inc.1037 West Howard StreetPontiac, Illinois 61764(815)
842-3383www.anthonyliftgates.com
Tooling RequiredThe following is a list of suggested toolsthat
should be used to install the MagnumTuckunder liftgate.
• Overhead Crane or Forklift• Mig or Stick Welder• Heavy-Duty
C-Clamps• Tape Measure• Level (small, magnetic)• Cutting Torch (in
some applications)
815-842-3383 5 Anthony Liftgates, Inc.
General Information
Make sure all decals areattached to liftgate and/ortruck and are
legible at alltimes.
DANGER
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Fabricated ToolingTip: A lifting jig, as shown in these pho-
tos, can reduce installation timewhen installing more than
oneAnthony Magnum Tuckunder liftgate.A forklift or overhead crane
can alsobe used with a bolt and chain.
These photos show a sample lifting jig, butwhen you fabricate a
lifting jig it :
• must be made specifically for the typeand design of your
particular forklift.
• must be wide enough to support the lift-gate and to
accommodate the width ofthe forks on the forklift.
• must be constructed from materials thatare capable of lifting
and supporting theAnthony Magnum Tuckunder liftgate.
• must be constructed from tubular steelat least 0.25 inches
thick or thicker.
• must be securely fastened to the forklift.• must have a
lifting bolt that is long
enough to go through the lifting hole inthe liftgate and allow
the lifting jig toremain level.
Tip: Make the lifting bolt from a 5/8 inchthreaded eyebolt. Use
a washer andnut to fasten the lifting jig to the lift-gate.
• must satisfy the user that it is safe andproperly
constructed.
Anthony Liftgates, Inc. 6 815-842-3383
General Installation InformationInstallation Section
The construction of the liftingjig must satisfy the user to
besafe and properly construct-ed. Failure to use the
propermaterials or material thick-ness can result in seriousinjury
or death to the user(s).
DANGER
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Prior To Installation1. Place the truck on a flat, level
surface.
Block the wheels to prevent the truckfrom moving while
installing a liftgate.
2. Use the Mounting Requirements chartand illustration to make
sure there isenough clearance to properly installthe liftgate.
3. Remove the banding securing the lift-gate and the loose parts
to the pallet.Remove the curbside and streetsidemounting plates,
dock bumpers, andfloor extensions that are stored on theliftgate.
Unfold the liftgate platform.
Tip: Check the OEM vehicle manual forany special requirements
prior towelding on the truck. If required, dis-connect the battery
cable beforewelding on the truck.
Tip: When installing multiple liftgates,consider making a
lifting jig as shownin the Fabricated Tooling section ofthis
manual.
815-842-3383 7 Anthony Liftgates, Inc.
Mounting Requirements
A B C D EBed Bed to top Mounting (maximum) Chassis
Height of Adapter Plate Rear Sill and BodyFrame Tube Clearance
Clearance Cut out
46” 19.5” 14-3/8” 4.5” 13.50”
48” 19.5” 16-3/8” 4.5” 13.50”
50” 19.5” 18-3/8” 4.5” 13.50”
52” 19.5” 20-3/8” 4.5” 13.50”
54” 19.5” 22-3/8” 4.5” 13.50”
57” 19.5” 25-3/8” 4.5” 13.50”
MTU-1036
Failure to prevent the truckfrom moving while installing
aliftgate could result in seriouspersonal injury or death
fromcrushing the installer(s).
DANGER
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Step 1Remove the cover from the power unitbox. Remove all the
parts and installationinstructions from inside the box. Someunits
are shipped from the factory with ashipping plug in the power unit
reservoir.If necessary, replace the shipping plugwith a vent
plug.
Tip: The power unit box should containplastic tie wraps for
battery cable,two stop brackets, one latch plate,one 150 Amp
circuit breaker, andone package containing decals,shims, and
manuals.
Step 2Cut off or extend the chassis frame, woodfiller, and body
long sill, as shown. Theframe must extend between 0 and 24 inch-es
from the rear of the truck body.
Tip: Before modifying the truck chassis,make sure any extensions
meet thespecifications of the truck manufactur-er and that altering
the frame will notvoid the truck warranty.
Step 3Make sure the "rear sill" of the trailer bodyis flat and
straight all the way across therear face of the body. Remove
anyobstructions before installation; such as,trailer hitches and
brackets, dockbumpers, projections, etc.
0" to 24"
Body Long SillWood Filler
Chassis Frame
MTU-1040
Truck Body
Anthony Liftgates, Inc. 8 815-842-3383
Installation Procedure
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Step 4Measure and determine the center of thetruck’s rear sill.
Mark this point.
Step 5Install the floor extension.
Tip: Two men can be used in the weldingprocess to reduce the
time.
a. Align the “Center Mark” of the floorextension assembly with
the centermark of the truck body.
b. Level the floor extension assembly withthe floor of the truck
body and tackweld it in three locations (left, center,and right).
Make sure the tack weldswill hold the weight of the floor
exten-sion, approximately 200 pounds.
c. Use a long straight edge to make surethe floor extension is
level and parallelto the floor of the truck body.
815-842-3383 9 Anthony Liftgates, Inc.
Tack welds must be strongenough to hold the weight ofthe
extension and the dockbumpers. Insufficient weldsmay not hold the
truck exten-sion in place, resulting inbodily harm.
CAUTION
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d. Tack weld the gussets under the floorextension to the truck
body. If the rearsill is uneven, cut or shim the gussetsor the
sill, to maintain a level and par-allel attitude between the floor
exten-sion and the floor of the truck body.
e. Finish welding the floor extension tothe truck body. Weld
between thewhite dots painted on the floor exten-sion (2 inch long,
1/4 inch fillet welds,on 6 inch centers).
f. Weld the gussets under the floor exten-sion to the truck body
using 1/4 inch fillet welds on one side of thegusset.
Step 6Lift and position the liftgate.
a. Attach a lifting device to the liftgate.Tip: While a lifting
jig (as shown) is not
required for liftgate installation, it canreduce installation
time wheninstalling more than one liftgate.Otherwise, any lifting
device, such asa forklift or overhead crane, capableof lifting and
holding the liftgate inposition and level can be used with abolt
and chain.
b. Raise the platform and position the lift-gate bolster (front
edge of platform)tight against the floor extension.
c. Center the platform from side-to-sidewith the truck body.
Step 7Clamp the liftgate to the floor extension.
Anthony Liftgates, Inc. 10 815-842-3383
Do not remove the hoist, forklift, or other lifting deviceused
to hold the liftgate inplace during the installationprocedure.
NEVER WORKUNDER THE LIFTGATE ORFLOOR EXTENSION whileinstalling or
painting the unit.Work so that you would not bein the way if the
clamps, weld,etc. should fail.
WARNING
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a. Use two large C-clamps, as shown, tohold the liftgate in
place.
b. An alternate method of holding the lift-gate is using two, 3
to 4 foot longpieces of heavy-duty angle iron. Thesize of the angle
iron should be 3 x 3 x1/4 inch minimum.
Step 8Route the supplied power cable (withattached fuse
assembly) from the batteryto the liftgate power supply using one
ofthe following procedures:
Step 9 - Direct Battery Connection (notrecommended)
Step 10 - Cut-Off Solenoid ConnectionStep 11 - Cut-Off Switch
ConnectionOnly one method is required to completethe wiring
installation.
Illustration 7. Power cable and fuse assembly.
CL
A-1042
Platform and floor extensiontight all the way across width.
Angle Iron (one each side)
Center platform with floorextension and truck floor.
Install an eye-bolt in platformand use for hoisting to bed
height.
815-842-3383 11 Anthony Liftgates, Inc.
Never secure the power cableto anything which allows it
tocontact sharp edges, otherwiring, fuel tank, fuel lines,brake
lines, air lines, exhaustsystem, or any other objectthat could
cause the powercable to wear or be damaged.A direct short in the
batterycable can cause sparksresulting in loss of vehiclecontrol,
serious injury, oreven death.
DANGER
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Step 9Direct Battery Connection (not recom-mended)
IMPORTANT NOTICEUsing the standard wiring hookupis not
recommended because itdoes not cut off power to the lift-gate when
the truck is left unat-tended. A cut-off switch or cut-offsolenoid
will disable the use ofthe liftgate when the truck is notin
use.
Illustration 9. Power cable connected to power unitand
battery.
a. Position the fuse assembly near thebattery so the short cable
end willreach the positive terminal.
b. Attach the fuse holder to the truck bodylongsill using either
Method A or B,shown in this step.
Tip: There are several options for attach-ing the power cable
from the plasticfuse assembly. It can be fastenedusing plastic tie
wraps or wire clips.The fuse assembly can also be bolt-ed directly
onto the body longsill, ifdesired.
+–
LongPowerCable
Fuse
Ground
VehicleBattery
A-1017
LiftgateSolenoid
Anthony Liftgates, Inc. 12 815-842-3383
Anthony Liftgates strongly recom-mends the installation of a
power cut-off solenoid or cab cut-off switch. Notcutting off power
to the liftgate whenunattended can result in seriousinjury or death
to unauthorized usersor others near the liftgate.
DANGER
The liftgate must be properly ground-ed. A ground wire, the same
gauge orlarger as the liftgate power cable,must be connected from
the negativepost of the battery or batteries to thetruck’s frame.
Some trucks may havea properly sized ground wire from thebattery to
the frame and would requireno change. If, however, there is
noground wire or it is undersize, add thecorrectly sized ground
wire.If this Warning is not followed, dam-age to the truck chassis
may occur.Improper grounding can cause theelectrical current to
travel throughbrake lines, steel braided power steer-ing hoses, or
other chassis wiringcausing failure to these components!Failure of
these components couldresult in loss of vehicle control.
WARNING
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Method A
Fasten the power cable to the truck body.Locate one fastener
(battery side) within 3inches of the end of the fuse
assembly.Locate the other fastener (power unit side)within 8 inches
of the fuse assembly.
Using this method does not require thefuse assembly to be
attached to thelongsill.
Method B
Attach the fuse holder to the truck bodylongsill using #10 or
#12 self-tappingscrews or bolts, washers, and self-lockingnuts.
Fasten the power cable, as needed,to properly hold it in place.
Using thismethod requires an extra length of cableon one side of
the fuse assembly to permitremoval of the fuse.
c. Run the long end of the power cablefrom the fuse to the motor
solenoid. Ifthe power cable is longer thanrequired, cut it to the
desired lengthand attach a cable lug according toinstructions
listed below.
Illustration 9c. Connect power cable to motor sole-noid.
d. Connect the power cable to the motorsolenoid. Make sure the
power cableis connected to the correct motor sole-noid post (one
not connected to themotor housing with a metal strap orwire
cable.
e. Connect the short end of the powercable to the positive post
of the battery.
f. The power unit should now be opera-tional.
g. Coat all terminal ends, studs, and nutswith a Teflon
lubricant, grease, or otherelectrical connection sealant to
preventcorrosion.
Tip: Do not apply undercoating to powercable or fuse holder! The
powercable should be clean near the fuseholder to ensure easy
removal of therubber boot seals if fuse needs to bereplaced. For
fuse replacement, seethe instructions in the Maintenancesection of
this manual.
A-1074
Approx.6"
Approx.6"
A-1073
TO LIFTGATE
Approx. 8"
Approx.3"
815-842-3383 13 Anthony Liftgates, Inc.
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Cable Lug Installation1). Strip insulation one inch back from
the
end of the cable to expose the copperwire.
Remove one inch of insulation.
2). Position the cable lug on the exposedwire, as shown. Crimp
the cable lugusing a cable crimping tool (hydraulicor manual).
Install cable lug.
IMPORTANT NOTICEProper wire connections are cru-cial to the life
of the liftgate’spower unit. DO NOT smash thecable lug with a
hammer tosecure it to the cable. Poor con-nections can result in
low voltage,and any attempt to operate belowthe minimum required
voltagecould cause system failure.
3). Use the supplied heat shrink tube toinsulate the new
connection. Heat theshrink tubing using a heat gun orpropane torch
until it shrinks aroundthe cable insulation and cable lug,leaving
only the mounting holeexposed. Do not overheat the heatshrink
tubing.
Put heat shrink tubing over connection.
Step 10Cut-Off Solenoid ConnectionThe installation of a cut-off
solenoid is arecommended option, by AnthonyLiftgates, for all 12
Volt electric liftgates.Installing a cut-off solenoid will help to
pre-vent accidental or unauthorized use of theliftgate.
The optional A-133036 Cut-Off SolenoidKit can be used in any
truck, but is essen-tial for tilt cab applications because
itrequires only a light weight wire running tothe cab—not a large
cable as required bythe cut-off switch.
A-1012
TYPE SGT
TYPE SGT
A-1011
TYPE SGT
TYPE SGT
TYPE SGT
TYPE SGT
A-1010
1"
Anthony Liftgates, Inc. 14 815-842-3383
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Cut-off solenoid installed between battery and fuseassembly.(1)
Short cable, part of solenoid kit. (2) Short endof power cable
leading to fuse.
Follow the installation directions on theInstallation
Instruction sheet that comeswith the kit.
Wiring diagram with cut-off solenoid.
Step 11Cut-Off Switch ConnectionThe installation of a cut-off
switch is also arecommended option, by AnthonyLiftgates, for all 12
Volt electric liftgates.Installing a cut-off switch will help to
pre-vent accidental or unauthorized use of theliftgate.
Follow the installation directions on theInstallation
Instruction sheet that comeswith the kit.
Cut-off switch mounted in cab of truck.
Wiring diagram with cab cut-off switch.
A-1019
+–
LongPowerCable
Fuse
Ground
VehicleBattery
CabMountedCut-OffSwitch
ShortPowerCable
ShortPowerCable
LiftgateSolenoid
+–
Ground
A-1018
LongPowerCable
ShortPowerCable
ShortPower Cable
Fuse VehicleBattery
Ground
Cut-OffSolenoid
Fuse Box On/OffToggle Switch
LiftgateSolenoid
815-842-3383 15 Anthony Liftgates, Inc.
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Step 12Roughly position the adapter frame tube(6" x 6" tube) to
attain the dimensionsshown in the table of Step 2 in the Prior
toInstallation section in this manual.
Step 13The liftgate is a power down model andcan use the
liftgate cylinder to position theadapter frame tube.
a. Make sure the power cable to the pumpmotor is connected.
b. Connect a ground cable from some-where on the pump (steel) to
the frameof the truck. This ensures a goodground to run the pump
motor.
Anthony Liftgates, Inc. 16 815-842-3383
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c. Now the liftgate control switch can beused to help position
the adapter tube.The functions of the control switch willbe
opposite from the way they areprinted on the control switch,
becausethe platform is clamped to the truckbody.
Step 14Position the adapter frame so the lift cylin-der is
extended at least a 1/4". This can bedetermined quickly by looking
at theamount of "chrome piston rod" showing onthe lift cylinder.
The use of a floor jack canhelp position the adapter frame, as
shown.
Tip: To achieve a 1/4” cylinder extensionmay require the
mounting plates tobe slightly tilted, forward or back-ward. The
"tilt" does not affect thefunction of the liftgate. This stepallows
the platform to continue toraise to the "floor extension"
level,even after the liftgate ages.
Step 15Slide the "mounting plates" over theadapter frame tube.
The "mounting plate"goes toward the front of the vehicle, asshown
in Step 16. The mounting platescan be trimmed off the top, if
necessary,as long as a 9" minimum contact area ismaintained.
IMPORTANT NOTICEThe height of the truck framemust be tall enough
to achieve 9inches (minimum) of verticalcontact between "liftgate
mount-ing plates" and "truck frame".
Step 16When the mounting plates are approxi-mately straight up
and down, tack weld theplates to the frame as shown. The tackwelds
should be a minimum of 3/8" fillet x1" long.
815-842-3383 17 Anthony Liftgates, Inc.
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Step 17Remove the C-clamps, angle iron (if thismethod was used),
lifting device, and jack.Lower the platform near ground level
andremove the two installation bolts from therocker frame weldment,
one on each side.
Step 18The liftgate platform must travel correctlythrough its
full cycle. (A full cycle is whenyou perform all of these
functions, Up,Down, Open, Close, Tilt Down, & Tilt Up.)If it
does not travel through the full cycle,replace the clamps and
hoisting device.Break the tack welds on the mountingplates, and
reposition the adapter tubeassembly. Recheck the operation of
theliftgate and repeat this step until the liftgateoperates
correctly.
Note: This liftgate platform rides level untilit meets the
ground, then as youcontinue to power the liftgate Down,the platform
tilts so the taperededge meets the ground. The plat-form again
levels itself before liftingduring the Up cycle.
Step 19Weld the liftgate while platform is loweredto the ground,
not in raised position. Shieldthe lift cylinder’s chrome piston
rods, andhoses, to prevent damage by weld spatter.Use 3/8" fillet
welds around the entiremounting plate.
Step 20Cut the chassis frame and body long sill asshown. After
making the cut out, makesure the liftgate operates properly
withouthitting the chassis frame or body long sill.
MTU-103913.50
11.50
Anthony Liftgates, Inc. 18 815-842-3383
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Step 21If necessary, adjustment can be made toreposition the
height of the platform in rela-tion to the truck floor. When fully
raised,the rear edge of the platform should stop“level" to 3/4 inch
higher than the frontedge of the platform. This extra heightallows
for deflection when the platform isfully loaded. Shims (approx.
size 1/16"thick x 3/4" x 2-1/4" long) can be installedbetween the
cam plates and the platformas shown (weld shims to cam plates).
Step 22
IMPORTANT NOTICEThe latch pin is only for in-transitlocking of
the liftgate. DO NOTslide the latch pin into thelatched position
when the plat-form is unfolded and/or raised.If this occurs,
serious damage tothe liftgate can occur when theliftgate is
lowered.
Attach the latch plate to the radius arm asfollows:
a. Raise the liftgate to the stored positionand slide the latch
pin across the radiusarm.
b. Position and tack weld the locking plateon the streetside
radius arm as shown.There should be a 1/16” gap betweenthe radius
on the locking plate and thelatch pin.
815-842-3383 19 Anthony Liftgates, Inc.
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c. Lower the liftgate to the ground, attachthe ground cable for
the welder, andweld the locking plate in two placeswith 3/8” fillet
welds, as shown in thefollowing illustrations.
Step 23Mount the control switch to truck’s rearcurbside post so
it can be reached whilestanding at the curbside of the truck
awayand from the liftgate platform.
Tip: Mount the switch box before attach-ing the dock bumpers.
This allowsrouting of the switch box wirethrough the slot in the
dock bumper.
Tip: To install a control switch on "flatbed" applications were
there is nocorner post, here are a few alterna-tive locations:
a. Under the bed on the "dock bumpergusset" (this requires the
gusset to bemounted further in from the side of thebody, for
protection).
b. Install a removable, hand-held controlswitch (this is a
hand-held control thatwill allow the operator to move aroundwhile
controlling the liftgate, this canalso be removed and stored away
fromthe liftgate).
c. Use a flush-mount control switch andrecess it into the side
of the body frame.
Step 24Weld both the streetside and curbsidedock bumpers onto
the floor extension.
a. If necessary, route the control cablethrough the curbside
dock bumper asmentioned in Step 24.
b. Position the top of each dock bumperflush with the floor
extension andstraight up and down, parallel with thesides of the
truck body. Tack weld intoposition.
A-1050
Weld
Radius Arm
Latch Plate
Anthony Liftgates, Inc. 20 815-842-3383
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c. Weld dock bumper corners continuous-ly to floor extension and
truck body.
Tip: Place a wet shop towel or rag aroundthe switch box control
cable whenwelding the curbside dock bumper toprevent burning or
melting the con-trol cable.
Step 25Weld the side gussets to the dock bumpercorners and the
steel side member of thetruck body or the cross-members of thetruck
body. The step shown is a typicalstep and may look different from
the actu-al step sent for installation.
a. The recommended method of attachingside gussets, is welding
the gusset to thesteel side member of the truck body.
b. The alternate method of attaching theside gussets is to weld
the gusset tothe steel cross-members of truck body.Make sure gusset
straddle at leastthree cross members. Weld both sidesof each
gusset.
A-1038
A-1037
815-842-3383 21 Anthony Liftgates, Inc.
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Step 26Attach the four platform support brackets.First, fold the
platform in the positionshown in the photo.
a. Raise the ramp edge of the platform (A)about 1/2” from
touching the radiusarm.
b. Tack weld a platform support bracket(B) to the outside of
each radius arm.You may need to cut the bracket so thewelded end
does not extend beyondthe radius arm.
c. Now adjust the platform UP or DOWNuntil the back edge of the
platform (C)is about 1/2" from touching the framestructure.
d. Tack weld a rear support bracket (D) tothe outside of each
radius arm.
Make sure liftgate operates properly, thenfinish weld all four
brackets in place on 3sides of each bracket.
Tip: Keep the hoisting device attached tothe platform for
safety. Lower thehoisting device just ahead of the plat-form as it
lowers.
Step 27Install lights or other electrical compo-nents, if
needed.
Anthony Liftgates, Inc. 22 815-842-3383
For safety purposes, weld theliftgate while the platform ison
the floor, not in a raisedposition. Cover the cylinderrods to
prevent weld spatterfrom damaging them.
CAUTION
-
Step 28Install grab bars or hand rails, as may benecessary.
Also, install license plate hold-er, as necessary.
IMPORTANT NOTICESome models of Anthony lift-gates may be
provided with stepdevices to assist in the ingressor egress of the
rear of the truckor trailer. These devices areNOT to be considered
all inclu-sive of any requirements orguidelines regarding
properingress or egress of trucks andtrailers. These items are
provid-ed only as an added feature forinstallers to help simplify
themeeting of possible ingress oregress requirements. As thereare
many variables in trucksizes and shapes, it is theinstallers
responsibility to deter-mine proper ingress and egressrequirements,
such as steps,hand grips, grab bars, etc. foreach vehicle receiving
anAnthony liftgate.
Step 29Make a final operation check. Rememberthat this liftgate
is a power down model,therefore the pump will run while the
plat-form is lowering.
a. Make sure the platform will travelthrough a complete cycle,
up anddown, smoothly and freely, with theplatform completely
open.
b. Make sure the platform will fold andtuck under the truck in a
stored posi-tion, and latch. The liftgate must foldsmoothly and
freely.
c. Make sure hydraulic hose fittings aretight and hydraulic hose
does not rubagainst the liftgate or other parts whilecycling up,
down, open, and closed.Adjust as necessary by loosening fittingsand
adjusting the position of the hose(s).Retighten fittings.
Step 30Attach all decals, as shown in the Decalsection of this
manual.
Step 31Complete the Final Checklist section.
815-842-3383 23 Anthony Liftgates, Inc.
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❏❏ Check all welds to make sure they aredone properly.
❏❏ Make sure all pins are in place and heldwith proper
retainers.
❏❏ Make sure the power unit reservoir isfilled.
Fill hydraulic tank to within 1/2 inch from the top ofthe
tank.
The fluid level should be 1/2” from thetop of the reservoir when
the liftgateplatform is in the fully raised position.
❏❏ Install cover on power unit box. Makesure it is secured with
a padlock, lockpin, or wire (customer supplied).
❏❏ Operate the liftgate through its entireoperational cycle (Up,
Down, Open,Close) several times. Make sure theliftgate operates
evenly, freely, andsmoothly throughout the entire operat-ing range
and that there is no unusualnoise or vibration while operating
theliftgate.
❏❏ Make sure the platform is adjustedproperly (0 to 3/4 inch
rise) with thenecessary shims.
❏❏ Make sure all decals are in place andlegible.
❏❏ Make sure license plate bracket isproperly installed, as
required by law.
❏❏ Make sure lights are installed and oper-ating properly, per
FMVSS 108.
❏❏ Make sure reflectors are re-installed, ifany.
❏❏ Make sure grab handles and otheringress/egress items are
properlyinstalled as may be necessary.
❏❏ Make sure the optional cab cut-offswitch or power cut-off
solenoid isinstalled.
❏❏ Put Installation, Operation, andMaintenance manual and Parts
manualin the vehicle.
Anthony Liftgates, Inc. 24 815-842-3383
Final Inspection Checklist
Do not use the liftgate if anyof the items in the FinalChecklist
are not checkedand verified. If you have anyquestions, contact your
near-est Anthony distributor, orthe Anthony Liftgates
mainoffice.
DANGER
-
Safety decals provide a vital role in helpingto reduce injuries
and/or possibly evendeath. To ensure the greatest level ofsafety,
all decals must be in place and leg-ible at all times. Remember, it
is the usersresponsibility to maintain these decals.For a complete
part number list of thedecals used on the Tuckunder liftgates,refer
to the Decals section in the Partsmanual for MTU-GLR Model
TuckunderLiftgates, form number MTU-GLR P-11/04.
For replacement decals contact:Anthony Liftgates, Inc.1037 West
Howard StreetPontiac, Illinois 61764(815)
842-3383www.anthonyliftgates.com
815-842-3383 25 Anthony Liftgates, Inc.
Decals
Make sure all decals areattached to the liftgate and/ortruck and
are legible at alltimes.
DANGER
MTU Tuckunder LiftgateSafety Decals
Item Part No. Description Qty Remarks
1 Q-003013 Urgent Warning - Elevating Gate 1 On side of truck
body.Instructions...
2 ATU-423 Operating Instructions 1 On side of truck body.
3 A-150238 Notice - This liftgate is protected... 1 On side of
truck body.
4 ATU-141 After Using Liftgate, Secure Latch... 1 On side of
truck body.
5 ATU-147 3000 lb. Maximum Capacity 1 On side of truck body
on3000 Models Only.
A-171433 4000 lb. Maximum Capacity 1 On side of truck body
on4000 Models Only.
6 A-131034 Anthony Hydraulic Lift Gate label 1 On back of
liftgate.
7 A-150601 Flag — Made in the USA 1 Inside edge of platform.
8 A-131003 SF Series 1 Inside edge of platform.
9 A-131026 Zero Leak Concept 1 Inside edge of platform.
10 A-131017 Note: Disengage “latch”... 1 On bottom of main
platform.
11 ATU-146 Stand Clear Do Not Ride on Lift 2 On bottom of main
platformand on bottom of flip-oversection.
12 ATU-424 Reset Circuit Breaker (not shown) 1 On circuit
breaker bracket.
13 ATU-143 Secure Latch While in Transit (not shown) 1 Place by
latch assembly.
-
1. Q-003013
Anthony Liftgates, Inc. 26 815-842-3383
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2. ATU-423 3. A-150238
4. ATU-141
5. ATU-147
815-842-3383 27 Anthony Liftgates, Inc.
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A-171433
IMPORTANT NOTICEMake sure the proper “maximumcapacity” decal
goes on theappropriate liftgate. For example,“3000 lb. Maximum
Capacity”decal goes on MTU-GLR 3000models only. Do not put a
higherrated decal (4000 pound) on asmaller liftgate; this could
result inliftgate damage or possibly per-sonal injury.
6. A-131034
7. A-150601
8. A-131003
9. A-131026
10. A-131017
Anthony Liftgates, Inc. 28 815-842-3383
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11. ATU-146
12. ATU-424 (located on circuit breaker)
13. ATU-143
815-842-3383 29 Anthony Liftgates, Inc.
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The following is a list of Do’s and Don’tsfor the operation of
the liftgate.
✔✔ Do’s✔ Read and follow warning decals, oper-
ating decals, and owners manual.
✔ Keep all decals in place and legible andretain the owners
manual in the vehicleor all Warranties are void.
✔ Make sure the vehicle is properly andsecurely braked before
using the lift-gate.
✔ Keep yourself clear of all moving parts.
✔ Make sure the area in which the plat-form will open and close
is clear beforeopening, closing, raising, or loweringthe
platform.
✔ Make sure the platform area, includingthe area in which loads
may fall from theplatform, is clear before, during, and atall times
while operating the liftgate.
✔ Always place the load as close to thecenter of the platform as
possible. Also,position the load as close to the centerof the
truck’s rear sill as possible.
✔ Only operate the liftgate with the pushbutton/switch controls
mounted on thetruck body.
✔ Check the oil level in the hydraulicmonthly. Change it if it
is contaminatedor dirty.
✔ Visually inspect your liftgate frequentlyand keep it properly
adjusted.
✔ Repair any damage to the liftgate toprevent accidents.
✔ Lock the liftgate into the storage posi-tion with the latch
pin when the liftgate isnot in use.
✘✘ Don’ts✘ Do not overload the platform. The maxi-
mum rated capacity is based on anevenly distributed load on the
platform’sflat surface.
✘ Do not ride on the liftgate. Always standclear of liftgate
when it is operating.
✘ Do not allow children to play around oroperate the
liftgate.
✘ Do not allow your liftgate to be used bypersons not familiar
with its operation.
✘ Do not use your liftgate if it shows signsof abuse or fails to
operate freely.
✘ Do not allow the motor/pump to run afterthe liftgate is
closed, or in the up posi-tion.
✘ Do not use brake fluid in the hydraulicreservoir.
Anthony Liftgates, Inc. 30 815-842-3383
General Safety Operating InstructionsOperation Section
Do not stand in the platform’swork area while operating
theliftgate. Serious injury ordeath could result if the loadshifts
or is unstable on theplatform.
DANGER
-
✘ Do not bounce the platform by pushingand releasing the control
button/switchabruptly.
✘ Do not use the liftgate for anything otherthan its intended
use of loading andunloading cargo.
✘ Do not operate lift trucks on or over anypart of the
platform.
✘ Do not stand under or place any objectunder the liftgate work
area.
815-842-3383 31 Anthony Liftgates, Inc.
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Opening and Closing theLiftgate
Step 1Twist and slide the latch pin toward curb-side of the
liftgate.
Step 2Stand clear of the platform and lower theliftgate by
pressing "Down" on control but-ton/switch.
Step 3Open the platform.
Step 4Open the flipover ramp.
Step 5Press the "Up" switch to raise platform orthe "Down"
switch to lower the platform.
Step 6To tuck the liftgate into its storage positionafter use,
reverse Steps 1 2, 3, and 4 fromground level.
Anthony Liftgates, Inc. 32 815-842-3383
Operating Instructions
-
Monthly InspectionSPECIAL NOTE: As of December 1994Anthony
Tuckunder Liftgates are “Service-Free”. This means that newer
liftgateshave lubrication-free bushings at the majorpivot points
which, of course, do notrequire lubrication. Consequently
theseliftgates do not have grease zerks.
1. Make sure the liftgate operates freelyand smoothly throughout
its entirerange of movement.
2. Check for damage to the liftgate suchas bent or distorted
members, or anycracked weld which may have resultedfrom overload or
abuse. Check forexcessively worn parts. Replace bush-ings and pins
if extremely worn.
3. Check all pins and pivot points. Makesure they are secured
with properretainers.
4. Make sure platform is angled upwardfrom truck bed 0 to 3/4
inch whenraised to bed height. See PlatformAdjustment for a
shimming procedure.
5. Make sure all electrical wires, switches,and connections are
in good workingcondition and operate properly.
6. Check for oil leaks in these areas:a. Hydraulic lift
cylinder.b. Hydraulic hoses. Replace if they
show signs of leakage or excessiveabrasion of the covering.
c. Check all hydraulic fittings fordamage or leaks. Tighten
fittingsto stop leaks or replace if dam-aged.
7. Check reservoir oil level.a. Place liftgate in the fully
raised, the
oil level should be within 1/2 inchof the top of the
reservoir.
b. Fill as required with Penzoil AWXAutomatic Transmission Fluid
orequivalent.
IMPORTANT NOTICEUse only Penzoil AWXAutomatic Transmission Fluid
orequivalent in the power unitreservoir. Do not use brakefluid.
8. Check the fluid level of the vehicle bat-tery. Fill as
required.
9. Examine all Warning, Capacity, andOperational Decals. If they
are notreadable they should be replaced.Decals may be obtained from
AnthonyLiftgates, Inc.
10. Oil the roller wheel and make sure itspins freely.
815-842-3383 33 Anthony Liftgates, Inc.
Quick Check Maintenance GuideMaintenance Section
-
Checking Battery CableTo check for a bad battery cable, run
themotor directly from a spare battery usingjumper cables.
1. Remove the battery connection to themotor.
2. Connect the negative jumper cable(ground) directly to the
liftgate.Connect the positive cable to the termi-nal on the motor
start solenoid.
3. Depress the switch, if the motor oper-ates, the battery cable
is bad andshould be replaced.
Checking the Control SwitchNewer control switches, shown on the
leftside of the photo, are permanently sealed(potted) and cannot be
checked. If theseswitches are not working properly,
replacethem.
The older unpotted switch can be checkedto make sure it is
operating properly.
Gravity Down Models (unpotted)1. Connect one end of a continuity
tester
to either top terminal (3) or bottom ter-minal (2).
2. Connect the other end of the continuitytester to a chassis
ground or the bodyground.
Inside of gravity down control switch.
Anthony Liftgates, Inc. 34 815-842-3383
Maintenance and Troubleshooting Procedures
Stand clear of the liftgatewhen checking the controlswitch. It
is possible for theliftgate to activate when test-ing the switch,
which couldlead to personal injury.
CAUTION
-
3. Once connected, flip the switch for thatfunction (up or
down). If the switch isgood, the tester will light to indicategood
continuity. If the tester does notlight, then that function of the
switch isbad.
4. Repeat the procedure for the other ter-minal.
5. If the switch is bad, replace it.
Power Down Models (unpotted)
Inside of power down control switch.
1. Connect one end of a continuity testerto terminal [2 (a or
b), 3, or 4].
2. Connect the other end of the continuitytester to a chassis
ground or the bodyground.
3. Once connected, flip the switch for thatfunction (up or
down). If the switch isgood, the tester will light to indicategood
continuity. If the tester does notlight, then that function of the
switch isbad.
4. Repeat the procedure for the other twoterminals.
5. If the switch is bad, replace it.
Replacing the FuseTo replace a fuse:
1. Pull back the rubber boots from thefuse holder.
2. Unscrew the fuse holder ends from thefuse holder body and
pull it apart.
3. Slide the fuse holder body one direc-tion (left or right) to
expose the blownfuse.
4. Loosen the screws from each end ofthe fuse and remove it.
Replace thefuse with the same size (Amperage)fuse as the one
removed. If you areunsure of the replacement fuse amper-age,
contact Anthony for your specificsize fuse. Retighten the
screws.
5. Re- assemble the fuse in reverse order.Be sure the rubber
boots are sealedaround the fuse holder and cable.
6. Re-connect power after you are certainliftgate area is
clear.
815-842-3383 35 Anthony Liftgates, Inc.
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Checking Motor Start Solenoidand Power Cut-off Solenoid
Both the motor start solenoid and powercut-off solenoid can be
checked bybypassing the solenoid itself.
1. Use jumper cables for this test.2. Connect one jumper cable
to the bat-
tery side (2) of the solenoid. Connectthe other cable to the
motor side (1) ofthe solenoid.
3. If the liftgate is activated, the solenoidis bad and should
be replaced.
Checking Lowering ValveCartridge and Solenoid1. Place liftgate
on the ground in the open
position.
2. Place a steel screwdriver over the topof the lowering valve
coil.
3. Momentarily activate the control switchin the DOWN position.
The screwdriv-er should be attracted to the magneticfield created
by the coil.
4. If no magnetic pull is produced, the coilis bad and should be
replaced. If thecoil is good, check the cartridge valve.
5. Remove the solenoid from the valveassembly.
6. Remove the valve cartridge from thepump body.
7. Clean the cartridge and blow it dry withcompressed air (not
greater than 30psi). Also blow out the pump body.
Anthony Liftgates, Inc. 36 815-842-3383
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8. Use a small screwdriver and carefullypress on the spool
inside the cartridge.If the spool moves freely, the cartridgeis
good. If it does not move, replacethe cartridge, because the spool
couldbe bent, pitted, or damaged in someother way.
Checking Cylinder PistonSeals (drifting - caused by seal
leak-age)
Piston Rod Seals (Power Down)1. Check the lowering valve. Make
sure it
is operating correctly and the valve isnot sticking or
dirty.
2. If the lowering valve is operating prop-erly, then the
drifting is most likelycaused by worn piston seals. Rebuildthe
cylinder and replace the pistonseals.
If the cylinder is under warranty, do notrebuild. In these cases
the complete cylin-der will be replaced.
Packing Gland NutOn newer model cylinders, purchasedafter Spring
of 2003, there is no packingseal adjustment. If a leak is found,
rebuildthe cylinder with a new seal kit.
On older models, if the packing seals areleaking and oil is
flowing down the cylinderpiston, this leakage can be stopped inmost
cases by tightening the gland nut.
1. Place the platform on the ground.2. Use a pipe wrench or
other suitable
wrench to tighten the gland nut 1/4 to1/2 of a turn. Do not
tighten the nutmore than 1/2 of a turn at a time.
3. If the packing gland nut continues toleak, tighten the nut
again or rebuild thecylinder using a new seal kit.
IMPORTANT NOTICEDo not overtighten the packinggland nut. If the
cylinder does notextend or extends very slowly, thepacking gland
nut may be tootight. If the leak cannot bestopped by tightening the
packinggland nut, rebuild the cylinderand replace the packing
glandseal.
815-842-3383 37 Anthony Liftgates, Inc.
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Checking and AdjustingSystem PressurePower down models have two
relief valvesettings; one for raising the platform(power up) and
one for lowering the plat-form (power down).
To check the “power up” pressure setting:
1. Place the liftgate on the ground andremove the pressure hose
from thepower up port of the pump.
2. Install a tee (customer supplied) intothe power up port.
3. Connect a pressure gauge and recon-nect the hydraulic
hose.
The pressure gauge must be rated abovethe maximum pressure of
the liftgate. Forexample, use a 4000 psi pressure gaugeon a 3000
psi maximum capacity liftgate.
4. Raise the liftgate and check the pres-sure. If the pressure
is low, adjust thepower-up pressure relief valve (1).
5. With the liftgate on the ground, loosenthe locknut. Use an
Allen wrench andturn the pressure adjustment screwcounterclockwise
to increase pressureand clockwise to decrease the pres-sure.
If the appropriate pressure cannot bereached, replace the
pump.
6. Hold the valve adjustment screw inplace and tighten the
locknut. Thismethod will prevent the adjustmentscrew from turning
when the locknut istightened.
7. Check the power down relief valvepressure (2) in the same way
as thegravity down system by installing a teeand gauge.
8. The power-down pressure should notexceed 400 psi. Turn the
adjustingscrew counterclockwise to decreasethe pressure and
clockwise to increasethe pressure.
Anthony Liftgates, Inc. 38 815-842-3383
Do not stand or work in theplatform’s work area whileoperating
the liftgate. Placethe pressure gauge so it canbe read while
operating theliftgate from a safe location.Serious injury or death
couldresult if this action is not fol-lowed.
DANGER
-
Flow Control Valve
If the cylinders do not operate or operateslower than normal,
remove the flow con-trol valves and hook the hydraulic
hosesdirectly to the cylinders. If the cylindersoperate properly,
replace the flow controlvalves.
815-842-3383 39 Anthony Liftgates, Inc.
Do not operate the liftgatewithout the flow controlvalve.
Serious injury or deathcould result if this action isnot
followed.
DANGER
-
Safety is Your ResponsibilityIt is the responsibility of the
installer/oper-ator to understand and perform properoperating
procedures. Be aware of theinherent dangers in the use of this
productand the tools used to install it. Read andunderstand all
Danger, Warnings,Cautions, and Important Notices in thismanual and
on the liftgate or truck.
Safety Signal WordsA signal word or words call attention to
thesafety sign and designate a degree orlevel of hazard
seriousness. The signalwords for Anthony Liftgates’ product safe-ty
signs are DANGER, WARNING, CAU-TION, and IMPORTANT NOTICE.
DANGER: Indicates an imminently haz-ardous situation which, if
not avoided, willresult in death or serious injury. This signalword
is limited to the most extreme situa-tions.
WARNING: Indicates a potentially haz-ardous situation which, if
not avoided,could result in death or serious injury.
CAUTION: Indicates a potentially haz-ardous situation which, if
not avoided, mayresult in minor or moderate injury. It mayalso be
used to alert against unsafe prac-tices.
IMPORTANT NOTICEIndicates that equipment orproperty damage can
result ifinstructions are not followed.
Safety Rules
CAUTION
WARNING
DANGER
Anthony Liftgates, Inc. 40 815-842-3383
To avoid personal injury ordeath, carefully read andunderstand
all instructionspertaining to the AnthonyLiftgates product. Do
notattempt to install, operate,or maintain our productwithout fully
understand-ing all our instructions andsafety precautions. Do
notoperate or work on a truckor liftgate unless you readand
understand theinstructions and warningsin the
Installation,Operation, andMaintenance manual. Ifany doubt or
question aris-es about the correct or safemethod of performing
any-thing found in this or otherAnthony Liftgates’ manu-als,
contact your AnthonyLiftgates’ dealer or call theInside Sales and
Servicerepresentatives at our mainheadquarters. Proper careis your
responsibility.
DANGER
Safety SectionSafety
-
815-842-3383 41 Anthony Liftgates, Inc.
To prevent injury, make sureall decals are attached to
theliftgate and/or truck and arelegible at all times.
DANGERTo prevent injury, the liftgateshould only be installed by
aqualified installer havingknowledge and skill in usingwelding
equipment and a cut-ting torch.Always weld in a well ventilat-ed
area and, if in an enclosedarea, vent the fumes to theoutside.
Breathing weldingsmoke and paint fumes cancause serious injury.
Always follow all State andFederal health and safety lawsand/or
local regulations whenusing an arc welder, migwelder, or cutting
torch. Also,follow all manufacturer’s safetyguidelines. If other
people arepresent during the installationof the liftgate, make sure
thewelding area is shield fromtheir view. This will help pre-vent
serious eye injury from thebright light.To avoid eye injury
duringwelding, always wear a weld-ing helmet with the properlens to
shield your eyes fromthe bright light.Failure to prevent the
truckfrom moving during theinstallation of the liftgatecould result
in serious per-sonal injury or crushing ofthe installer(s).
DANGER
To prevent serious bodily injury, keepsparks, lighted matches,
and openflames away from the top of the bat-tery, because battery
gas canexplode. Always follow all the manu-facturers’ safety
recommendationswhen working around the truck’s bat-tery.
Take precautions to avoidsparks coming into contactwith the
truck’s fuel tank,brake lines, or other flamma-ble components.
Sparks cancause an explosion of com-bustible materials, resultingin
serious injury or death.Never secure the power cableto anything
which allows it tocontact sharp edges, otherwiring, fuel tank, fuel
lines,brake lines, air lines, exhaustsystem, or any other
objectthat could cause the powercable to wear or be damaged.A cut
battery cable can causesparks resulting in loss ofvehicle control,
seriousinjury, or even death.
DANGER
-
Anthony Liftgates, Inc. 42 815-842-3383
Most accidents involving theoperation, maintenance, or repairof
products made by AnthonyLiftgates occur because
theinstaller/owner/operator failed toobserve basic safety rules
oroperating instructions. Accidentscan often be avoided by
beingalert and recognizing potentiallyhazardous situations. Any
indi-viduals installing, operating,maintaining, or repairing
prod-ucts manufactured by AnthonyLiftgates should have the
neces-sary training, skills, and toolsrequired to perform these
func-tions properly and safely. Thesafety information in this
manualserves as a basic guide in anattempt to prevent injury or
death.
Anthony Liftgates cannot antici-pate every possible
circum-stance that might involve apotential hazard. The warningsin
this manual and on the prod-uct itself are, therefore, not
allinclusive. If tools, procedures,work methods, or
operatingtechniques that are not specifi-cally mentioned by
AnthonyLiftgates are used, you must sat-isfy yourself that they are
safefor you and for others. Makesure the liftgate or truck it
ismounted onto will not be dam-aged or made unsafe by anyoperation,
lubrication, mainte-nance, or repair procedures thatyou choose.
DO NOT proceed, if any doubtarises about the correct or
safemethod of performing anythingfound in this or other
AnthonyLiftgates’ manuals. Seek outexpert assistance from a
quali-fied person before continuing.
WARNINGUse extreme caution if work-ing under the liftgate
duringinstallation. Failure to safelysecure the liftgate to the
floorextension could cause seri-ous personal injury. Do notremove
the lifting device(s)until the liftgate is completelywelded onto
the truck.
To prevent personal injury,clean up any spilled
fluidsimmediately. To avoid trip-ping, do not leave tools
orcomponents laying around inthe work area.Do not place hands or
feet inpinch points.
Do not ride on the platform.
Do not place your feet underthe liftgate.
Always use/set the truck’sparking brake before operat-ing the
liftgate. Failure to fol-low this recommendation canresult in
injury.
WARNING
-
815-842-3383 43 Anthony Liftgates, Inc.
Many liftgate models providedrivers’ steps as a conven-ience
feature. When stepsare present, customer-sup-plied grab handles and
otheringress/egress items shouldbe installed.Even though the
Anthony lift-gate is easy to install, theinstallation should be
donewith at least two people.Take precautions to avoidwelding
sparks or the flamefrom a cutting torch cominginto contact with the
truckbed’s wooden floor or otherflammable components. Tack welds
must be strongenough to hold the weight ofthe individual
componentsbeing held in place.Insufficient tack welds maynot hold
the parts in place,resulting in possible bodilyharm.
CAUTION
IMPORTANT NOTICEUse only Penzoil AWXAutomatic Transmission
Fluidor equivalent in the power unitreservoir. Do not use
brakefluid.
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Troubleshooting Chart
Problem Possible Cause Possible Solution
Motor does not run when Cab cut-off switch. Turn switch to ON
position.control switch is activated.
Dead battery. Make sure battery is fully charged. Check for
loose or corroded battery con-nections. Replace or recharge
battery.
Main power cable circuit protection Reset circuit breaker or
replace fuse.tripped or blown.
10 Amp fuse in power unit box. Replace, if fuse is blown. If
problem con-tinues, check for shorts in the electricalsystem.
Control box switch. Check switch using Checking ControlSwitch
procedure in Maintenance section.
Motor start solenoid. Check solenoid using the procedure inthe
Maintenance section.
Optional power cut-off solenoid. Check solenoid using the
procedure inthe Maintenance section.
Battery cable. Connect motor directly to a spare batteryusing
the procedure in the Maintenancesection.
Motor. If the motor is determined to be bad, itshould be
replaced. Bad motors are typi-cally caused by weak batteries (low
volt-age), loose connections, corrosion, or apoor ground.
If liftgate is installed on a semi trailer make sure the battery
wire is two gauge orheavier. Smaller wires can reduce the voltage,
resulting in motor failures.
If the motor dose not operate in freezing conditions, make sure
the motor housingdoes not contain water.
Troubleshooting SectionTroubleshooting Guide
Anthony Liftgates, Inc. 44 815-842-3383
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815-842-3383 45 Anthony Liftgates, Inc.
Troubleshooting Chart (continued)
Problem Possible Cause Possible Solution
Motor runs, but liftgate will not open Structural damage. Check
clearance Fix damage. Replace worn parts.or lower to the ground.
between platform and dock bumpers.
Latch pin. Slide the latch pin to the open position.
Control switch box. Check DOWN terminal using the proce-dure in
the Maintenance section.
Lowering valve coil. Check the coil using the procedure in
theMaintenance section.
Lowering valve cartridge. Check, remove, and clean valve
cartridgeusing the procedure in the Maintenancesection.
Flow control valve. Remove flow control valve and hookhydraulic
hose directly to the cylinder. Ifthe cylinder operates properly,
install anew flow control valve.
Motor runs, but platform will not raisewill not raise rated
capacity, or raises,but drifts down when control switch is
released.
Structural damage. Replace damaged parts.
Low fluid level. Fill reservoir.
Low Voltage. Inspect the battery connection terminalsand check
the battery’s Voltage (9 Voltsminimum).
Lowering valve. Coil or cartridge may need cleaning
orreplacement. See Maintenance section.
Bad piston seals. See Maintenance section for CheckingCylinder
for Leakage.
Pump relief valve needs adjusted. See Maintenance section for
Checkingand Adjusting System Pressure.
Hydraulic pump is worn. Replace hydraulic pump.
Sagging platform. Normal wear. Add shims to platform. See
Maintenance section for Platform Adjustment.
Bushing wear where lift arms Replace bushings.connect to
platform.
Structural damage. Replace damaged parts.
Load capacity has been exceeded. Verify load capacity and adjust
loadweight.
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Anthony Liftgates, Inc. 46 815-842-3383
Troubleshooting Chart (continued)
Problem Possible Cause Possible Solution
Foaming oil. Air in the hydraulic hose(s). Check oil level in
reservoir.
Broken or loose fluid return tube. Remove the oil reservoir and
make surethe return tube is below the oil level. Ifthe tube has
turned or fallen out, reinstallit into the pump housing. Use a
centerpunch to “stake” the tube into position.
Hydraulic fluid is leaking from Loose packing gland nut, if so
Tighten gland nut.packing gland. equipped.
Latch pin is broken or bent. Operator has lowered platform The
latch pin is only used to prevent the without releasing latch pin.
liftgate from opening due to a pressure
leak or pressure bleed-off over an extend-ed period of time.
Always release latchbefore opening liftgate.
Liftgate raises truck when Power down system pressure is See
Maintenance section for Checkinglowered to the ground. set too
high. and Adjusting System Pressure.
Liftgate will not open. Platform operating area is not clear.
Clear platform operating area.
Pin will not slide free. Activate the “UP” switch and raise the
lift-gate to the fully stored position.Open the latch pin free.
Platform lowers extremely slow. Low oil level on power down
models. Fill reservoir.
Improper oil in hydraulic reservoir. See Monthly Inspection.
Bushing wear where lift arms Replace bushings.connect to
platform.
Damaged or kinked hydraulic hose. Repair or replace.
Cylinder rod is scored, pitted, or bent. Repair or replace.
Flow control valve. Remove flow control valve and hookhydraulic
hose directly to the cylinder. Ifthe cylinder operates properly,
replacethe valve.
Lowering valve. Solenoid or cartridge may need cleaningor
replacement. See Maintenance sec-tion.
Platform raises partially and stops. Load capacity has been
exceeded. Verify load capacity and adjust loadweight.
Structural damage. Replace damaged parts.
Low Voltage. Recharge battery (if less than 9 volts).
Low fluid level or pressure. Refill reservoir. Check relief
valve.
Platform will not lower. Platform operating area is not clear.
Clear area.
Structural damage. Replace damaged parts.
Low Voltage. Recharge battery (if less than 9 volts).
Lowering valve. See Maintenance section.
Hydraulic pump and motor. Replace power unit.
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NOTES
815-842-3383 47 Anthony Liftgates, Inc.
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NOTES
Anthony Liftgates, Inc. 48 815-842-3383
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Anthony Liftgates, Inc.1037 W. Howard Street • P.O. Box 615 •
Pontiac, IL 61764-0615Ph: 815.842.3383 • Fax: 815.844.3612 • Toll
Free: 800.482.0003www.anthonyliftgates.com
Form No. MTU-GLR-IO-10/04