Service Manual Service Manual THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF MASSEY HARRIS MASSEY FERGUSON OR IT’S SUCCESSORS. MASSEY HARRIS MASSEY FERGUSON AND IT’S SUCCESSORS ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL. TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS. MF50C Industrial Tractor, Loader & Backhoe MH-S-MF50C TLB
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MF50C Industrial Tractor, Loader & Backhoe · Industrial Tractor, Loader & Backhoe MH-S-MF50C TLB. Form No. 1448789 M1 MF 50C TRACTOR/LOADER/BACKHOE CONTENTS PART 1 - Important Procedures
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Transcript
Servic
e M
an
ual
Service Manual
THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF
MASSEY HARRIS MASSEY FERGUSON OR IT’S SUCCESSORS. MASSEY HARRIS MASSEY FERGUSON AND IT’S SUCCESSORS
ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL.
TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS,
AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.
"CONVERTING UNITS OF WEIGHTS AND MEASURES ............................................... 10 Definition of Terms and Selection of Units ....................................................... 10 "Rounding-Off" Converted Units ................................................................ 14 Conversions Between Units ..................................................................... 15
CONVERSION TABLES ............................................................................ 18 How to Use Conversion Tables .................................................................. 18 Table 1 - Inches and Miilimetres, Celsius and Fahrenheit ........................................ 19 Table 2 - Tightening Torques (ft.lbs to kg.m) - NOT "SI" ......................................... 20 Table 3 - Tightening Torques (kg.m to ft.lbs) - NOT "SI" .......................................... 20 Table 4 - Area (Square Inches to Square Centimetres) ........................................... 20 Table 5 - Area (Square Feet to Square Metres) .................................................. 21 Table 6 - Bending Moment or Torque (Inch Pounds to Newton Metres) ............................ 21 Table 7 - Bending Moment or Torque (Foot Pounds to Newton Metres) ............................ 21 Table 8 - Bending Moment or Torque (Kilogram-force-metre to Newton Metre) ..................... 22 Table 9 - Force (Pounds-force to Newtons) ...................................................... 22 Table 10- Length (Microinches to Micrometres) ................................................. 22 Table 11 - Length (Hundredths of an Inch to Millimetre) .......................................... 23 Table 12 - Length (Inches to Millimetres) ....................................................... 23 Table 13 - Mass (Pounds to Kilograms) ......................................................... 23 Table 14 - Power (Horsepower to Kilowatts) ..................................................... 24 Table 15 - Pressure or Stress (Pounds Per Square Inch to Kilopascals) ............................ 24 Table 16 - Volume or Capacity (Cubic Inches to Cubic Centimetres) ............................... 24 Table 17 - Volume or Capacity (Cubic Inches to Litres) ........................................... 25 Table 18 - Volume or Capacity (Cubic Feet to Cubic Metres) ...................................... 25 Table 19 - Volume or Capacity (Cubic Yards to Cubic Metres) ..................................... 25 Table 20 - Volume or Capacity (U.S. Fluid Ounces to Cubic Centimetres) .......................... 26 Table 21 - Volume or Capacity (U.S. Liquid Pints to Litres) ......................... '" ............ 26 Table 22 - Volume or Capacity (U.S. Liquid Quarts to Litres) ...................................... 26 Table 23 - Volume or Capacity (U.S. Liquid Gallons to Litres) ..................................... 27
The service repair procedures recommended within the various parts in this Manual are usually written assuming that the assembly to be repaired has been removed from Tractor. However, much of the servicing can be performed without complete removal of assembly ... it will require judgment of serviceman to determine necessity of removal, while taking into consideration, degree and extent of servicing required.
Following important points should be remembered and practiced.
TROUBLE-SHOOT AND CLEAN TRACTOR BEFORE DISASSEMBLY. If possible, make a complete diagnosis to determine extent of repair which should be performed. Take all precautions as necessary to prevent dirt or other foreign material from entering hydraulic, fuel and air system.
DO NOT MIX PARTS. Be alert during disassembly to detect presence of special parts which should not be interchanged.
INSPECT PARTS DURING DISASSEMBLY AND CLEAN THOROUGHLY.
LABEL PARTS AND PROTECT PRECISION OR MACHINED SURFACES.
DO NOT SUBSTITUTE PARTS. THE USE OF NONRECOMMENDED SUBSTITUTE REPLACEMENT PARTS MAY BE A SOURCE OF ADDED TROUBLE. Do not assume that if parts look alike, they are the same.
The majority of parts have special properties known only by the manufacturer. They are the result of particular requirements established by extensive research and testing of complete Tractor through combined efforts of MF's engineering research and MF's service department field experience. There is a continual program to further improve existing parts.
Many of these improvements cannot be detected by visual examination between old and new items. Therefore, it is extremely important that only genuine MF replacement parts be used to repair an MF Tractor.
PAGE TESTING AND TROUBLE-SHOOTING..... .................. .................. ...................... 2
Checking Pump Pressure.............. ....................... .................................. . 2 Filling and Removing Air From System ........................................................... 2
CS-18 2nd Issue ENGINE DRIVEN STEERING PUMP (Parker Hannifin) CS-21 1st Issue STEERING CONTROL UNIT
This Part contains three separate sections, each beginning with Page 1 and Figure 1.
CAUTION: To avoid personal injury, use positive acting jacks, hoists and secure blocking when raising, lowering or supporting Tractor, Loader, Backhoe and components.
Refer to Loader and Backhoe Parts in this manual for additional precautions.
1. Set parking brake, then lower loader and backhoe to ground (or use supports and lock pins).
2. Connect a 2000 psi (minimum range) gauge into pressure line, (upper port on pump body), Fig. 1 with D31 adapter, 1,DS.1 'T',2,andD19 HP hose assembly, 3.
3. Check oil level in reservoir, run engine, turn wheels against stop to blow relief valve. Take readings (oil at 1500 F.)
a. At 2000 engine rpm, 1650 psi. b. At 500 engine rpm, 1100 psi. Stop engine, dis
connect gauge and reconnect lines if pressure is satisfactory. Refill reservoir. 4. Approximate flow at 2000 engine rpm is 5.S
gpm and .9 gpm at SOD rpm.
NOT.E: These flow rates are for pumps in new condition. Used pumps may be expected to have flow rates of 4.5 and.7 gpm.
5. Pump relief valve is adjustable. Turn clockwise to increase pressure, counterclockwise to decrease. Refer to Fig. 2. Tighten lock nut. Replace valve if correct setting cannot be made.
SYMPTOM CHART
Symptom
Manual but no power steering ....... . No steering action .................. . Hard steering action ................. . Excessive free-play in steering wheel .............................. . Foaming oil ......................... : Slow, erratic steering action ......... . Power but no manual steering ....... . Steering wheel has a "kick-back" .... .
See Possible Cause
A A.C,D,E A.B,D,E
B,C,D B,C,F A.B,D
D,E G
FIG. 2
POSSIBLE CAUSES OF STEERING SYSTEM MALFUNCTIONS
A. Inoperative or malfunctioning steering pump. Repair or replace pump. B. Low or improper type oil. Fill to filler opening. C. Air in system. Replace faulty hoses or tighten connections. D. Inoperative or malfunctioning hydrostatic hand pump. Repair or replace hand pump. E. Steering pump relief valve dirty, worn or improperly adjusted. Correct as necessary. F. Air leaking into suction line. Tighten connection. G. Hydrostatic hand pump improperly timed. Time as instructed.
FILLING AND REMOVING AIR FROM SYSTEM
1. Fill pump reservoir with lubricant such as Permatran®.
2. If lines, steering control unit and cylinders are dry, crank engine, but do not start engine to begin filling system. Refill reservoir and repeat.
NOTE: Never operate starter motor more than 30 seconds at a time without pausing to allow it to cool for at least two minutes. Overheating, caused by excessive cranking will seriously damage starter motor.
3. Set brakes, start engine, run at idle briefly while turning steering wheel left and right to stops. Do not blow relief valve. Stop engine, refill reservoir, restart and repeat turning and refill procedure until oil level remains at bottom of filler plug.
LUBRICATION SYSTEM ..................... 43 Adjusting Fuel Shut-Off Oil Pan ................................... 43 Control ............................... 49
Removing Oil Pan ....................... 43 Adjusting Engine Speed ................ 50 Installing Oil Pan ........................ 43 Adjusting Throttle Linkage .............. 50
Replacing Oil Filter and Crankcase Oil ...... 44 Installing Injectors ..................... 55 Fuel Lines and Connections .............. 56
Low Pressure Fuel Lines ................ 56 FUEL AND AIR SySTEM ..................... 45 High Pressure Injection Lines ........... 56
Air Cleaner ............................... 45 Air-Bleeding Fuel System ................. 56 Servicing Outer Filter Element ........... 45 Servicing Inner Filter Element ........... 45 COOLING SySTEM ......................... 58
Fuel Lift Pump ............................ 46 Water Pump ............................. 58 Removing and Disassembling Removing Water Pump ................. 58
Fuel Lift Pump ........................ 46 Disassembling Water Pump ............ 58 Reassembling and Installing Reassembling Water Pump ............. 59
This Part contains service information for PERKINS A4.236 Direct Injection Diesel Engine.
Thoroughly clean and inspect all components during servicing. Always plug or otherwise cover open fuel and oil lines and fittings to prevent entry of dirt.
Right and left-hand sides mentioned within text refers to engine as viewed from rear of flywheel. Direction of engine crankshaft rotation is viewed from crankshaft pulley end.
ENGINE SERIAL NUMBER
Engine Serial Number for A4.236 Diesel Engine is located on right side of cylinder block towards front, Fig. 1. Engine Serial Numbers for early engines were in the form of 236UA79319L. Engine Serial Numbers
for later engines are in the form of LD22052N379C. ALWAYS GIVE COMPLETE ENGINE SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.
Fig. 1 - Engine Serial Number Location - Right Side of Engine
1. Measure backlash between all timing gears, Fig. 89. .
~ ..
Fig. 89 - Measuring Timing Gear Backlash
Fig. 90 - Measuring Engine Idler Gear End-Play
a. Correct backlash between engine idler gear and its mating gears is 0.003-0.006 inch. .
b. Correct backlash between balancer idler gear and its mating gears is 0.006-0.009 inch.
c. Install new gears if backlash is excessive. When new gears are installed, recheck for minimum backlash. 2. Measure end-play of idler gears, Fig. 90.
a. Correct end-play is 0.004-0.008 inch for engine idler gear and 0.008-0.014 inch for balancer idler gear.
b. Replace worn parts if end-play is excessive. Wear limit for engine idler gear end-play is 0.010 inch or more. When new parts are installed, recheck end-play.
REMOVING TIMING GEARS
1. Release rocker arm shaft assembly to avoid possibility of damage to pistons or valve train.
Checking Height ........................................................................ 17/16 inches Load at Checking Height ............................................................... 220-235 Ibs. Free Length of New Spring ...................... 0 ••••••••••••••••••••••••••••••••••••• 1.955 inches Spring Color Code .. ' .......................................................................... Pink
SERVICING a-SPEED TRANSMiSSiON ............................... *Refer to Separate Publication CS-17
SERVICING MANUAL SHUTTLE TRANSMISSION - WITH PTO ....... *Refer to Separate Publication CS-22
SERVICING MANUAL SHUTTLE TRANSMISSION -WITHOUT PTO INPUT SHAFT .................................... *Refer to Separate Publication CS-45
SERVICING INSTANT REVERSE (HYDRAULIC SHUTTLE) AND TORQUE CONVERTER ...................................... *Refer to Separate Publication CS-44
TROUBLE SYMPTOMS OF INSTANT REVERSE (HYDRAULIC SHUTTLE) .......................................... *Refer to Separate Publication CS-44
*IMPORT ANT:
This reference is a separate component service publication which contains disassembly, inspection and reassembly instructions after transmission has been removed. These instructions are filed under this divider ... and are identified by their CS number printed in the lower right-hand corner on each odd numbered page (beginning with a Page 1).
SERVICE INFORMATION
Many of the service procedures may be performed WITHOUT complete removal of transmission assembly from Tractor. It will require good judgment by the serviceman as to necessity for complete removal of transmission while considering the extent of servicing to be performed.
1. The following information pertains to a-Speed Transmissions:
a. Although reference service publication CS-17 shows a regulating valve installed on input shaft retainer ... this valve is not used in this Tractor application. Also the supply line shown routed through transmission case is not installed. The brake cross shaft shown through front of case
-1-
member (beneath clutch release bearing) is not installed in this location for this Tractor model. However, these minor variations will not affect BASIC servicing.
b. Main input shaft retainer and PTO input shaft (with their related seals and bearings) may be serviced by separating Tractor between engine and transmission ... this "split" will also allow servicing engine clutch release bearing.
c. Dual range planetary may be serviced by separating between transmission and center housing. If shift cover is removed after this "split" ... shift rails and forks may be removed then main shaft and related gears.
DRIVE PINION INSTALLATION ...................................................................... B Servicing ............................................................................. Refer to CS-53
DIFFERENTIAL ASSEMBLY - REMOVAL OR INSTALLATION .......................................... 9 Service and Bearing Pre-Load .......................................................... Refer to CS-53
CENTER HOUSiNG ................................................................................. 10
CS-53 .................................................... Drive Pinion, Differential and Bearing Pre-Load
NOTE: This Part Contains 3 sections of material, all beginning with Page 1 and Figure 1.
CAUTION: To avoid personal injury, use positive acting jacks. hoists and secure blocking when raising, lowering or supporting Tractor, Loader Backhoe and Components.
Refer to Loader and Backhoe Parts in this Manual for additional precautions.
AUXILIARY HYDRAULICS - IPTO .................................................... -. . . . . . . . . . . . .. 16 Removal/Installation of Pump and Drive Train .................................................... 16 Servicing Pump and Drive Train ............................................ *Refer to Publication CS-26
*IMPORTANT
This Part contains separate Component Service Publications (referred to as CS-_) with instructions that pertain to bench servicing of assemblies ... AFTER they have been removed. These publications may be found under this same divider tab ... immediately following this Part and are identified by the reference publication number printed in the lower right-hand corner of each odd numbered page.
The service procedures within this Part pertain to the 3-Point Linkage and Auxiliary Hydraulic Pump (IPTO) ONLY ... and their related components. To obtain instructions for other systems (i.e.: Steering, Independent Power Take-Off, etc.) refer to the appropriate Part (within this Manual) that pertains to the system.
DOUBLE-ACTING CyLINDERS ....................................................... 39 Service Information and Specifications ............................................. 39 Service Procedures ............................................................ 41
1448976 M2 Printed In U.S.A.
BACKHOES
(See "Contents" page for Backhoes following Loader section)
The troubleshooting problem chart is divided into two categories of "symptoms" . . . one lists OPERATIONAL symptoms while the other lists COMPONENT symptoms.
chart, most like the malfunction experienced and refer to the "Possible Cause" paragraphs in the sequence order listed. (The references may seem to be listed in a haphazardly manner, but an attempt has been made to refer to the most easily checked, or most likely cause, in logical order.) Select the symptom, from the problem
OPERATIONAL SYMPTOMS
1. Foaming Oil ....................................... . ..... . 2. Fails to Raise ............................................. . 3. Slow or Erratic Lift (Also See # 17) ........................... . 4. Arms not Lifting Equally ..................................... . 5. Does not have Adequate Lift or Break-Out Capacity ............... . 6. Drops with Spool in "Raise" and another spool is Activated ......... . 7. Drops with Spool in "Neutral" Position ......................... . 8. Excessive Breakage of Hoses ................................ . 9. Low System Pressure (as Determined by Pressure Gauge) ......... .
COMPONENT SYMPTOMS !
CONTROL VALVE
10. External Leakage of Valve ................................... . 11. "Sticky" Valve Spool (s) ..................................... . 12. Unable to "Push" Valve Spool into Valve Body ................... . 13. Spring-Centered Spool does not Return to Neutral ................ . 14. "Float" Spool does not Stay in Detent .......................... .
HYDRAULIC PUMP
15. Pump Noisy and/or Overheating ............................. . 16. Pump Shaft Seal Leaking .................................... . 17. Pump GPM too Low (as Determined by Tests) ................... .
CYLINDERS
18. Rapid Leak Down .......................................... . 19. Cylinder Rod "Settles" into Barrel ............................. . 20. Cylinder Rod "Creeps" out of Barrel ........................... .