WF550A-3_(SEAW005900)[FAM_Eng](WM)

www.komatsupartsbook.com

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CONTENTS

0. Jigs and tools list ............................................................................................ 21. Drawings of divided units .............................................................................. 32. Assembly of chassis

( 1 ) Installation of wheels ............................................................................ 5( 2 ) Installation of wheel cleaners ............................................................... 6

(to front side of rear wheels)( 3 ) Installation of cab and ROPS canopy assembly.................................. 7( 4 ) Installation of muffler stack .................................................................. 15( 5 ) Installation of wheel cleaners ............................................................... 16

(to rear side of front wheels and rear wheels)( 6 ) Preparation for assembly (Work equipment) ...................................... 17( 7 ) Installation of support assembly .......................................................... 18( 8 ) Installation of dozer frame assembly ................................................... 21( 9 ) Installation of Y-support assembly ...................................................... 24(10) Installation of blade assembly .............................................................. 26(11) Greasing (Dozer linkage) ....................................................................... 30(12) Check of operation................................................................................. 31


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0 Jigs and tools list

Name Specification Q’ty1 Truck crane 50t 12 Truck crane 25t 13 Grease pump For supplying grease from pail 14 Stand H=800mm 300mm 45 Balance sling See following figure 1 (for slinging rear frame side). 16 Chain sling 12.5t x 3m 27 Nylon sling 3t x 5m 18 Nylon sling 1t x 3m 29

2. Necessary tools list

In addition to the above, many types of chock blocks, wood blocks, nylon slings, etc.should be prepared for the ease of work.

1. Necessary tools list

Each tool should be prepared for each worker. In addition to the above, common toolsshould be prepared for the ease of work.

Fig. 1 Specifications of balance sling

Name Specification Q’ty1 Impact wrench For M10 - M24 1 set2 Socket 11 mm – 21 mm 1 set3 Socket 24, 30, 32, 36 mm (For bolts) 1 each4 Spanner 41, 36, 30 mm (For hose) 1 each5 Torque wrench 420 – 519 Nm 16 Torque wrench 470 – 828 Nm 17 Torque wrench 823 – 1029 Nm 18 Copper hammer 19

Each sling must have capacity of 12.5 t or larger.

Min

. 3,0

00

Min. 1,800

(Reference) Example of use

Install to lifting eyes.


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1 1/2 Disassembly and transportation1. For transportation by traveling

Related specificationsWeight (TON) Overall length (mm) Overall width (mm) Overall height (mm)

Vehicle 21.4 7,390 3,460 3,145(Bare machine) (With temporary tires)

Trailer 32.0 11,900 3,200 550(Load capacity) (Height of carrier)

2. For transportation on trailer


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1 2/2 Disassembly and transportation3. Divided units (Posture for delivery with temporary tires)

Packing unit Length (mm) Width (mm) Height (mm) Weight (ton)(1) Bare machine (with temporary tires) 7,390 3,460 3,145 21.4(2) Dozer frames (Right and left) 2,735 430 600 0.8(3) Blade 4,835 1,250 765 2.2(4) Trunnion supports (Right and left) 1,750 1,335 460 2.2(5) ROPS canopy 1,415 1,900 1,753 0.5(6) Cab 1,620 1,340 1,635 0.3(7) Muffler stack 250 250 950 0.0(8) Steel wheels (4 pieces) 3,360 2,300 1,680 8.8(9) Wheel cleaners (Front, rear, right, and left) 3,693 1,300 450 1.9

(1) Bare machine (With temporary tires) (Japan)

(2) Frame LH assembly

(3) Blade assembly

(4)-1. Trunnion support LH

(4)-2. Trunnion support RH

(5) ROPS canopy

(6) Cab assembly

(7) Exhaust muffler

(8) Steel wheel

(9) Wheel cleaner bracket

¤ ª Delivered to foreign market with only rims.

(2) Frame RH assembly


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Precautions Necessary tools Necessary equipmentName Q’ty Name Q’ty

Impact wrench 1 Truck crane (35 tons) 1

Socket 30 mm 1 Sling (15 tons x 4) 1 setSling (2 tons) 1 set

Other remarks

2-(1) 1/1 Installation of wheels

1) Set the vehicle to the specified height witha rough terrain crane or jacks.fl Lifting capacity: 30,000 kg

(15,000 kg each at front and rear sides)

(2) Installation of wheels

1) Lift up the wheel with the sling and installit to the axle side.fl Sling capacity: 3,000 kg

fl Tightening torque for wheel nut:421.7 - 519.8 Nm {43 - 53 kgm}

fl When installing the wheels, extremelytake care of installation at the right, left,front, and rear.

(3) After installing the wheels, lower thevehicle to the ground level with therough terrain crane or jacks.

fl Lower the vehicle slowly, taking care ofsafety extremely.

fl Lifting capacity: 30,000 kg (15,000 kgeach at front and rear sides)

Stand (Jack)

Steel wheels

No. Part No. Part name Q’ty Condition

1 426-2212790 NUT 124 Installed tochassis temporarily

2 01643-32060 WASHER 124 Installed tochassis temporarily

3 425-S13-2110 WHEEL 4 Loose-supply item

INSTALLATION OF WHEELS

(1) Set the vehicle


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Mounting bolt

Remove each side floor and handrail together.

Mounting bolt

Rear Frame

Loosen tooth clamping bolts and install wheel cleaner.(All teeth)

(Front right of rear side)Wheel cleaner

Front

[View from above]

(Front left of rear side)

Wheel cleaner

Tightening torque588 – 1030 Nm{60 – 105 kgm}

[View from left side]

Adjust clearance between tooth and wheel to 25 mm.Tightening torque: 588 – 1030 Nm

{60 – 105 kgm}

2-(2) 1/1 Installation of wheel cleaner (to front side of rear wheels)1. Remove the right and left side floors.

No. Part No. Part name Q’ty Condition1 01010-82485 BOLT 16 Installed to rear frame temporarily2 01643-32460 WASHER 16 Installed to rear frame temporarily

2. Install the wheel cleaners tothe right and left sides of therear frame.


Impact wrench 1Socket (Hex. 36) 1Nylon sling (2 tons) 1

Other remarks

1. Remove the side floors since they will be obstacles toinstallation of the front wheel cleaners of the rear side.

2. Install the removed side floors again after installingthe cab assembly.


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1. Remove covers (1) under the floor frame.

2. Unpack the cab and remove right cover (2).

3. Sling the cab from the skid.fl Sling the cab slowly and horizontally.fl Remove the plugs from the cab top and install

eyebolts (4 places).

4 Cab: 300 kg

Cab

WARNINGStop the vehicle on a level place, install the safetybar to the frame, lower the bucket to the ground,stop the engine, apply the parking brake, and putchocks under the tires.

Installation procedure for cab assembly2-(3) 1/8


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4. Tuck up bellows (3) at the lower part of the steeringpost, loosen the 4 bolts, and turn down the steeringpost fully toward to operator’s seat.

5. Set the steering tilt lever free and turn down thesteering post fully toward to operator’s seat.

6. Stick seal (5) to the underside of the cab assembly.Necessary parts:

7. While keeping the cab assembly level, lower itslowly.fl Take care that the cab assembly will not interfere

with the electric wiring connectors at the rightrear of the floor frame.

fl Cover the steering post and plastic cover withseats to protect them.

4 bolts (4)2 each on right and left sides

Bellows (3)

4 (Inside of bellows)

Turn down toward operator‘s seat side. Lock

Free

Cab

Floor Frame

Cab

No. Part No. Part name Q’ty

5 421-56-21550 Seal 1



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8. While slinging and floating the cab, set the steeringtilt lever free and fix it so that the steering post willbe closest to the front side of the cab.fl Keep the cab floated until step 11.

9. Drive 2 steering post fixing bolts (6) lightly (2 – 3threads with your fingers).

Necessary parts:

10. Drive 2 cab mounting bolts (7) and 4 intermediatebolts and 4 rear bolts (8) (2 – 3 threads with yourfingers).

Necessary parts:

Connectors

Lock

Front side of cab

Free


8 01435-01020 Bolt 2

8 01643-31032 Washer 2


7 01010-51240 Bolt 2

7 01643-31232 Washer 2

8 01010-52050 Bolt 8

8 01643-32060 Washer 8



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11. Move the steering post to the front end of the caband tighten steering post lower bolts (4).

12. Lift down the floated cab and permanently tighten2 steering post fixing bolts (6) which were drivenlightly in stop 9.

13. Permanently tighten 2 cab mounting bolts (7) and4 intermediate bolts and 4 rear bolts (8) which weredriven lightly in step 10.

14. Raise the bucket about 400 mm, remove the safetylock bar of the frame and the chocks, and releasethe parking brake.While running the engine at low idling (with no loadon the bucket), pull the steering wheel with a push-pull scale in the tangential direction to check thatthe operating effort is in the following range.fl [Standard value at delivery: 0.7 - 1.3 (kg)]

After checking the operating effort, lower thebucket to the ground, apply the parking brake,stop the engine, set the safety lock bar to theframes, and set the chocks.

[Caution]Set bolts to bottom of oblong hole at part A and to top of oblong hole at part B.Set them as set when delivered.

4 bolts (4)2 each on right and left sides

4 (Inside of bellows)

Push-pull gauge



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15. Install bellows (3) to the bottom of the steering postwith plug (9).(Insert the plug in the hole of bellows (3) and lightlyhit the screw head installed temporarily to the plugwith a hammer to drive in the plug.)

Necessary parts:


9 421-09-21240 Plug 6

16. Connect the electric wires by connector (10).

17. Connect windshield washer hoses (11).fl Match the hose colors.

18. Install the right cover (2).

19. Install floor frame lower cover (1).



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20. Install the plug to the cab top.

21. Check the operations of the air conditioner, radio,cigarette lighter, front and rear wipers, windshieldwasher, and working lamp.

22. Install the mirrors and mirror stays to the right andleft of the cab.

Necessary parts:

Cab

Detail of A

Cab

Antenna

Remove screws(Take care not to lose them).

Draw in antenna wire at least 100 mm.

When installing screws,apply sealant to them(to prevent entryof rainwater).

Remove 4 bolts on right and left sides.

Rear frame

Floor(on right andleft sides)

23. Loosen the antenna mounting screws from the rightside of the ROPS canopy and remove the antennafrom the cab (to prevent interference and breakagewhen installing the ROPS canopy) and install screws(18) to the antenna mounting holes on the cab sideto stop the holes. At this time, apply syntheticrubber adhesive (CEMEDINE 366E or equivalent)to screws (18). Draw in the antenna wire at least100 mm.

Necessary parts:

24. Remove 4 bolts tightened temporarily into the rightand left ROPS canopy mounting parts of the rearframe ROPS support. (Discard the bolts andwashers.)fl Check that the rear frame ROPS support mounting

holes are matched to the holes on the floor.fl Install the side floors removed when the wheel

cleaners (at the front of the rear side) wereremoved.


12 421-54-25750 Stay (Left) 1

13 421-54-25720 Stay (Right) 1

14 01435-01025 Bolt 8

15 363-54-31450 Cap 8

16 421-54-25610 Mirror 2

17 04025-00632 Spring pin 2


18 01220-70412 Screw 2



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25. Sling the ROPS canopy from the skid.fl Install the sling to the hooks at the ROPS canopy

top (4 places).fl Sling the ROPS canopy horizontally and slowly.

4 ROPS canopy: 550 kg

ROPS canopy

ROPS canopy

Cab

Rear frame

26. Lift down the ROPS canopy horizontally and slowly.fl Take care that the ROPS canopy will not interfere

with the sides of the cab.

27. Tighten 20 ROPS canopy mounting bolts (19).

Necessary parts:

fl Tightening torque: 823 – 1030 Nm{84 – 105 kgm}

Target: 926.7 Nm {94.5 kgm}


19 01011-32400 Bolt 20

19 01643-32460 Washer 20



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27. Install the antenna to the right side of the ROPScanopy with the screws removed in step 23.

28. Install grommet (20) to the antenna line hole onthe cab side. When installing it, fill the gap withsynthetic rubber adhesive (CEMEDINE 366E orequivalent).

Necessary parts:

Cab

Antenna

ROPScanopy

Install with removed screws.

Fill gaps around grommet with sealant(to prevent entry of rainwater).


20 421-921-2410 Grommet 1



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WARNINGStop the vehicle on a level place, install the safetybar to the frame, lower the bucket to the ground,stop the engine, apply the parking brake, and putchocks under the tires.

1. Install the muffler stack to the left top of the enginehood.

Necessary parts:No. Part No. Part name Q’ty

1 425-02-21120 Muffler stack 1

2 01435-01230 Bolt 4

Engine hood

Installation procedure for muffler stack2-(4) 1/1


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2-(5) 1/1 Installation of wheel cleaner (to front and rear sides of rear wheels)


Impact wrench 1Socket (Hex. 36, 19) 1 eachSling (Nylon: 2 tons) 1

Other remarks

• After installing the wheel cleaners to the rear side, in-stall the step assemblies, which are the loose-supplyitems, to the rear frame and wheel cleaners.

No. Part No. Part name Q’ty Condition1 01010-82485 BOLT 32 Installed to front/rear frame temporarily2 01643-32460 WASHER 32 Installed to front/rear frame temporarily3 01010-81225 BOLT 12 Installed to rear frame temporarily4 01643-31232 WASHER 12 Installed to rear frame temporarily

Wheel cleaner (Front side)Adjust clearance between tooth and wheel to 15 mm. Adjust clearance between

tooth and wheel to 25 mm.

Wheel cleaner (Rear side)Step assembly

Right side

Tightening torque: 588.4 – 1030 Nm {60 – 105 kgm}



(All tooth bolts)

Step assemblyLeft side


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2-(6) 1/1 Preparation for assembly (Work equipment)


Spanner: 41 mm 1

Other remarks

(1) Move the dozer linkage control lever of the floor frame forward, backward, to the right,and to the left to release the residual pressure in the hydraulic circuit.

(2) Remove the plugs from the hydraulic tubes on the left side of the frame.

fl Tool size: 41 mm

2 tubes come out of this hole.

Remove both of these plugs.


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2-(7) 1/3 Installation of support assemblies


Copper hammer 1 Truck crane (10 tons) 1Impact wrench (For M16) 1 Sling (2 tons) 1Impact wrench (For M24) 1

Socket: 24, 36 mm 1 each

Other remarks

No. Part No. Part name Q’ty Condition1 421-70-11922 PIN 4 Installed to support temporarily2 01010-81630 BOLT 4 Installed to support temporarily3 421-70-11280 WASHER 4 Installed to support temporarily4 41L-70-15180 BAR 2 Installed to support temporarily5 425-46-12120 PIN 4 Installed to support/frame temporarily6 01010-81625 BOLT 4 Installed to support/frame temporarily7 01643-31645 WASHER 4 Installed to support/frame temporarily8 425-46-12310 SHIM(t=1.0) 16 Installed to support temporarily

Support (R.H)assembly

Pin (2)

Bar (1)

Bolt and washer (2)

Trunnion (1)

Bolt and washer (2)

Loose-supplysupport (L.H) assembly(Weight 947kg)Pin (2)

t

y u

r

q

Shim t1.0 (8) Set shim so that clearancewill be 1 mm or less.

Plate on frontframe side

Section A-A

Install the supports to the right and left sides of the front frame.fl Before installing the supports, loosen the wheel cleaner tooth mounting

bolts installed to them.fl The assembly parts and as-

sembly procedure for theright side are the same withthe left side.

Tightening torque147.1 – 308.9 Nm {15 – 31.5 kgm} (M16)823.8 – 1030 Nm {84 – 105 kgm} (M24)


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Torque wrenchSpanner type 36 mm x 1,800 kgcm 1

Spanner 36 mm 1

Other remarks

Connection of tilt cylinder hoses(Between front frame and support LH)

Both tubes come out of this hole.

Port B1 (Piston) tube

Port A1 (Bottom) tube

Installed in support LH when delivered

Hose (2)Tightening torque

147 – 206 Nm{15 – 21 kgm}

Wind red tapes.

Wind red tapes as marks onto bothends of bottom line hose


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Impact wrench 1Socket (HEX 36) 1

Other remarks

Adjust clearance between tooth and wheel to 15 mm.Tightening torque: 588.4 – 1030 Nm {60 – 105 kgm}


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2-(8) 1/3 Installation of dozer frame assemblies


Impact wrench (M22) 1 Truck crane 1

Socket 32 mm 1 SlingTorque wrench (7,500 QLE) 1

Other remarks

Install the dozer frames to the support trunnions on the right and left sides of the front frame.fl Weight of dozer frame: 310 kg (Common to right and left)

No. Part No. Part name Q’ty Condition1 175-71-11482 CAP 2 Installed to dozer frame temporarily2 175-71-11491 BOLT 4 Installed to dozer frame temporarily3 175-71-11520 NUT 4 Installed to dozer frame temporarily4 01643-32260 WASHER 4 Installed to dozer frame temporarily

Bolt and washer

Tightening torque: 470.7 – 828.7 Nm {48 – 84.5 kgm}

Cap (1 each for right and left sides)

Nut (4 each for right and left sides)

FRAME RH Ass’y

FRAME LH Ass’y

Trunnion

Apply molybdenum disulfide grease.


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Torque wrenchSpanner type 36 mm x 1,800 kgcm 1

Spanner 36 mm 1

Other remarks

Connection of tilt cylinder hydraulic hoses

fl Tool size: 36 mmfl Tightening torque: 176.5 ± 49 Nm {18 ± 5 kgm}

Tilt cylinder

Frame LH

Bracket port

Connect marked hoses to upper side of bracket ports.


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Other remarks

Install the covers to the right and left dozer frames.

No. Part No. Part name Q’ty Condition1 41L-70-15210 COVER 2 Installed to dozer frame2 01010-81230 BOLT 8 Installed to dozer frame3 01643-31232 WASHER 8 Installed to dozer frame4 41L-70-15810 COVER 1 Installed to dozer frame5 01010-81225 BOLT 4 Installed to dozer frame6 01643-31232 WASHER 4 Installed to dozer frame

Dozer frame R.H

Front frame left side hose

Dozer frame L.H assemblywww.komatsupartsbook.com

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2-(9) 1/2 Installation of Y-support assembly


Copper hammer 1 Truck crane (1 ton) 1Impact wrench (M20) 1 1-ton 2-wire sling 1Impact wrench (M6) 1

Socket / Spanner 10, 30 mm 1

Other remarks

Install the Y-link support to the H-link support.fl Weight of Y-support: 320 kg [Note]

ª When installing the Y-support, set it with the stamped side up and match the stamped No. on it to that of the H-support.

ªStamped No. 1

ªStamped No. 2

Stamped No. 2

Apply molybdenum disulfide grease to inside wall of pin hole (at both ends).

Tightening torque318.7 – 608.0 Nm{32.5 – 62 kgm}

Front Frame

Detail of Y-link assembly pivot

Adjust clearance to 1.5 mm or less.


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2-(9) 2/2 Installation of Y-support assembly


Other remarks

No. Part No. Part name Q’ty Condition1 41E-70-25230 PIN 2 Installed to Y-frame temporarily2 07020-00000 FITTING 2 Installed to pin temporarily3 09256-08014 LOCK PLATE 2 Installed to Y-frame temporarily4 01010-82045 BOLT 8 Installed to Y-frame temporarily5 01643-32060 WASHER 8 Installed to Y-frame temporarily6 425-70-12530 O-RING 4 Installed to Y-frame temporarily7 41E-70-15F60 SHIM (t=0.5) 4 Loose-supply item8 41E-70-15850 SHIM (t=1.5) 4 Loose-supply item


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2-(10) 1/4 Installation of blade assembly


Copper hammer 1 Truck crane (10 ton) 1Impact wrench (M16) 1Impact wrench (M24) 1 Sling (3 ton) 1Socket 22, 24 mm 1 eachSocket 36 mm 1Torque wrench 10000 QLETorque wrench 1800 QSP

Other remarks

Sling the blade assembly and install it to the dozer linkage.fl Weight of blade assembly: 2,200 kg

Blade assembly

Front Frame

Detail of part A

Standard shim thickness: 4 mm

View

Dozer frame L.HFrameL.H

Detail of part B

For specifications of parts, see 3/4.

Tightening torque

y 83.4 – 196.1 Nm {8.5 – 20.0 kgm}

#7 823.8 – 1030 Nm {84 – 105 kgm}


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Impact wrench (M16) 1

Socket 24 mm 1Torque wrench 2800 QSP 1

Other remarks

Connection of Y-support and lift cylinder

Tightening torque

$5 147.1 – 308.9 Nm {15 – 31.5 kgm}

!2 147.1 – 308.9 Nm {15 – 31.5 kgm}

Blade assembly

Connect lift cylinder.

Y-support

Front Frame

Detail of part A

Lift cylinder piston rod

Tightening torque147.1 – 308.9 Nm{15 – 31.5 kgm}

When the shim is inserted at part t and bushing (16) is installed and the plate is tightened with 115.7 Nm {11.8 kgm} evenly all round the periphery, the clearance must be 0 – 0.1 mm less than the clearance measured without the shim.


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Other remarks

No. Part No. Part name Q’ty Condition1 154-71-22470 PIN 2 Installed to blade temporarily2 175-71-21330 LOCK 2 Installed to blade temporarily3 01010-81435 BOLT 8 Installed to blade temporarily4 01643-31445 WASHER 8 Installed to blade temporarily5 154-71-22390 SHIM (t=2.3) 6 Installed to blade temporarily6 154-71-22410 SHIM (t=1.5) 6 Installed to blade temporarily7 154-71-22420 SHIM (t=0.5) 4 Installed to blade temporarily8 01010-82490 BOLT 8 Installed to blade temporarily9 01643-32460 WASHER 8 Installed to blade temporarily10 41D-70-15521 PIN 1 Installed to cylinder temporarily11 01010-81625 BOLT 1 Installed to cylinder temporarily12 421-70-11280 WASHER 1 Installed to cylinder temporarily13 07000-00000 FITTING 1 Installed to pin temporarily14 41E-70-15841 PIN 1 Installed to Y-frame temporarily15 07020-00000 FITTING 1 Installed to pin temporarily16 01010-81625 BOLT 1 Installed to Y-frame temporarily17 421-70-11280 WASHER 1 Installed to Y-frame temporarily18 41D-70-15430 SHIM (t=0.1) 3 Installed to blade temporarily19 41D-70-15440 SHIM (t=0.3) 5 Installed to blade temporarily20 41D-70-15451 BUSHING 1 Loose-supply item21 41D-70-15460 PLATE 1 Installed to blade temporarily22 01010-81650 BOLT 8 Installed to blade temporarily23 01643-31645 WASHER 8 Installed to blade temporarily


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Impact wrench (M16) 1

Socket 24 mm 1Torque wrench 2800 QSP 1

Other remarks

Installation of tilt cylinder cover

Tightening torque

$9 147.1 – 308.9 Nm {15 – 31.5 kgm}

No. Part No. Part name Q’ty Condition1 41L-70-15350 COVER 1 Installed to blade temporarily2 01010-81635 BOLT 4 Installed to blade temporarily3 01643-31645 WASHER 4 Installed to blade temporarily

Blade assembly

Tilt cylinderwww.komatsupartsbook.com

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2-(11) 1/1 Greasing (Dozer linkage)


Grease pump 1

Other remarks

Supply chassis grease (G2-LI) to each grease fitting of the dozer linkage.

Denotes part to be greased.

Greasing points

Supply chassis grease (G2-LI) to each grease fitting.

Front Frame

Detail of part A

Detail of part B

Dozer frame L.H


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Check of operation1. BLADE CONTROL LEVER

Operate the lever.

(1) RAISE: The blade rises.If the lever is released, it returns to the HOLD position.

(2) HOLD: The blade keeps at the current position.

(3) LOWER: The blade lowers.If the lever is released, it returns to the HOLD position.

(4) FLOAT: The blade moves up and down freely, depending onexternal forces.Even if the lever is released, it does not return to theHOLD position. Return it with the hand.

(5) TILT LEFT: If the lever is pulled to the left, the blade tilts to the left.If the lever is released, it returns to the HOLD position.

(6) TILT RIGHT: If the lever is pulled to the right, the blade tilts to theright.If the lever is released, it returns to the HOLD position.

NOTICEWhen the tilt cylinder moves to the stroke end, return the lever to theHOLD position immediately.

SAFETY LOCK

WARNING‡ When leaving the operator’s seat, set the safety lock lever in the

LOCK position securely.While the safety lock lever is not in the LOCK position, if someonetouches the blade control lever by mistake, a serious accidentcan occur.

‡ If the safety lock lever is not set in the LOCK position securely, theblade control lever may not be locked.

‡ When parking or maintaining the vehicle, be sure to lower theblade to the ground and set the safety lock lever in the LOCK po-sition.

The safety lock lever is the device to lock the blade control lever.Move this lever forward to lock the blade control lever.

2-(12) 1/3

LOWER

RAISE

TILT RIGHT

TILT LEFT

LOCK FREE


Other remarks


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Check of operation2-(12) 2/3

2. BLEEDING AIR FROM HYDRAULIC SYSTEM

(1) While running the engine at low idling, move the tilt cylinder and lift cyl-inder 4 - 5 times (stop each cylinder at about 100 mm before the strokeend, however).

(2) Move the tilt cylinder and lift cylinder to the stroke end 3 - 4 times, thenstop the engine and bleed air from the hydraulic tank.

Blade control leverFloor frame right console box

TILT LEFT

TILT RIGHT

LIFT DOWN LIFT UP

FRONT

Lift cylinder

Tilt cylinder frame L.H


Other remarks


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Check of operation2-(12) 3/3

(3) Run the engine and check that oil is not leaking from thedozer linkage line, and then check the operation of thedozer linkage.


Other remarks

FRONT

TILT LEFT

TILT RIGHT

LIFT DOWN LIFT UP

Y-link assemblyH-link

Left assembly

Left assembly

Trunnion support

Right assembly

Right assembly

Dozer frame

Blade assembly


WF550A-3_(SEAW005900)[FAM_Eng](WM)

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