Hyster H70Ft Forklift Maitnenance Service Manual

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Hyster H70Ft Forklift Service Manual

This manual covers the repair of the drive axle, dif- lDEf4TlFlCATlON PLATE ferential, and the wet diac brake. See Figure 1.

WARNING

Drive Æle Removal

from lift truck. Air preasure in tires can cause tire andràm partu to ezplode, which can cause serions injuzy or death. Never loosen nuts that hold logetRer ñioer æod outer œheel ÎzaÏves œheofâereissirpressume iotire.

4. Remove the wheels.

1. Put blocks on each side (front and back) of the steering tires to prevent movement of the lift 5.

2. Raise the lift truck and put blocks under the 6frame so that the drive wheels do not touch the floor. Put blocks under the counterweight for

8. Remove the mast assembly as described in the section Mast Repaire, 2, fl, and 4-Gtage Masts 4000 SRM 1148.

WARNING

On lift trucka with pneumatic tirea, completely remove air from tires hefore removing them

Remove the oil fill/level plugs on both sides of the drive axle. See Figure 2.

Remove the oil drain plug (LH) from the drive axle to drain the oil from the left-hand side of the drive axle into a suitable container. See Figure 2.

7. Remove the oil drain plug tRH and center section) to drain the oil fmm the right-hand side and oenter section of the drive axle into a suitable container. See Figure 2.

8. Remove the brake discs oil drain plug from the drive axle to drain the brake oil into a suitable container. See Figure 2.

1. CARRARO PART NUMBER 2. HYSTER PART NUMBER 6@zcre J. /dertgi/îcoZiozt blake

3. CARRARO SERIAL NUMBER

(RH AND CENTER SECTION)

9. Remove the parking brake cable. Refer to the 14. Place blocks under the axle assembly and consection Brake System 1800 SRM 1185. nect slings and lifting device.

10. Disconnect the cooling inlet hose from the mani- 15. Place blocks under the transmission to support fold on top of the drive axle. See Figure 8. the transmission while removing the drive axle.

11. Disconnect the brake inlet hose from the drive 16. Remove the capscrews retaining the drive shaft axle. See Figure 3. and remove the drive shaft.

Disconnect the brake return hose from the drive l7. Remove the transmission isolator mounting bolt axle. See Figure 3. located on top of the assembly. See Figure 4.

IS.

Disconnect the cooling return hose fmm the manifold on top of the drive axle. See Figure 3.

ORIVE AXLE COOLIMG RETURU HC'SE TO TRANSMI SS\ON SUMP

T4OSE CI MP

2. B "ARE INLET HOSE

3. CODLING RETURN HOSE

4. BRAKE RETURN HOSE

s. COOLING INLET COOE

1. ISOLATORS

2. WASHER

3. WASHER

4. CAPSCREW

5. TRANSMISSION

6. DRIVE AXLE

IB. Remove thefourmounting capscrews andwashers from the drive axle. See Figure 5.

s. Remove blocks and lower the drive axle assembly. Pull axle forward and away from frame.

20. Place blocks under the differential assembly.

21. Disconnect the cooling outlet crossover hose from the manifold and the drive axle and remove the hose. See Figure 6.

2S. If necessary, remove the capacrews retaining the manifold to the center section of the drive axle and rezaove tbe zaaoifoTd. See are 6.

1. WASHER

2. CAPSCREW

3. TRUMPET ARM LH)

4. TRUMPET ARM RH)

1. HOSE CLAMP

2. MANIFOLD

3. CAPSCREWS

4. CENTER SECTION

5. COOLING OUTLET CROSSOVER HOSE

Reduction Gear Assembly

REDUCTION GEAR ASSEMBLY REPAIR

See Figure 7 and Pigure 8.

13. TAPERED ROLLER BEARING

14. RING GEAR

15. PLANETARY CARRIER

16. WASHER

17. PIN

18. NEEDLE BEARINGS

19. SPACER

20. REDUCTION GEAR

21. NEEDLE BEARINGS

22. WASHER

23. SNAP RING

24. DISK

1. PLUG

2. RETAINING NUT

3. LOCKWASHER

4. WASHER

5. WHEEL HUB

6. STUD

7. SEAL RING

8. TAPERED ROLLER BEARING 9. SPACER

SUPPORT 11. SOCKET-HEAD SCREW

O-RING

Remove STEP 1. Remove the plug using a prybar.

htOTE: Once the lockwasher has been flattened, a newlockwasher must be used.

STEP 2. Flatten the lockwasher using a punch and hammer.

CAUTION

Install two nuts or suitable plastic pipes on the studs to prevent damage to the threads of the studs from the support bar.

Install a support bar on the studs to hold the wheel hub in place as shown. Using a torque multiplier, loosen the reduction gear assembly retaining nut.

STEP 3.

STEP 4. Remove the socket-head screws fastening the reduction gear assembly to the wheel hub support.

STEP 5. Remove the reduction gear assembly from the wheel hub support.

STEP 6. Remove and discard the O-ring.

STEP 7. Remove the ring gear.

STEP 8. Place the reduction gear assembly in a soft jawed vise and lock the wheel hub. Remove the retaining nut.

1. AXLE SHAFT

2. RING GEAR

1. RETAINING NUT

Reduction Gear Assembly

Reduction Gear Assembly

STEP 9. Remove the lockwasher.

STEP 10. Remove the washer.

STEP 11. Remove the planetary carrier from the wheel hub.

1. LOCKWASHER

1. WASHER

1. PLANETARY CARRIER

1. SNAP RING

Reduction Gear Assembly

STEP 15.

Remove the disk from the planetary carrier.

STEP fi6.

Remove the wheel hub from the support using a suitable extractor and special tool driver ( Hyster Part Number 1641516). Refer to the section Special T6ols.

STEP 17. Remove the bearing cone.

1. PLANETARY CARRIER 2. DISK

1. SUPPORT 2. WHEEL HUB

1. BEARING CONE