AR35.31-P-0530I Replace Radial Seal on Drive Pinion of Rear Axle Assembly

Replace Radial Seal Ring On Drive Pinion (Rear Final-drive Unit Installed)

Shown On Rear Final-drive Unit Dia. 198 Mm:

Remove/Install

DANGER:
- Risk of fatal accident from vehicle slipping or toppling off the lift platform
- Align vehicle between the columns of the lifting platform and position the four support plates at the lifting platform support points specified by the vehicle manufacturer.

1 Jack up vehicle
2 Draining rear axle oil
3 Remove exhaust system as of flange connection
4 Detach rear axle shafts (37) from connecting flange

NOTE:
- Move rear axle shaft so that is roughly horizontal and then push together.
- Remove rear axle shaft from connecting flange at a downward angle and tie up rear axle carrier

CAUTION:
- Installation: Replace self-locking bolts and washers.
- Lightly oil bolts at thread and bolt head contact surface.

5 Unscrew bolts from center driveshaft bearing support (106a)
6 Detach rear section of driveshaft (106) from rear final-drive unit (50).

NOTE:
- Flexible coupling remains on driveshaft
- Installation: Connect rear section of driveshaft to rear final-drive unit

7 Loosen fitted sleeves on flexible couplings

NOTE: Tie up driveshaft to one side

Measuring
8 Measure and note overall moment of friction on drive pinion
9 Slacken and unscrew hexagon collared nut (40)

NOTE:
- Do not remove the collar protection when slackening hexagon collared nut
- To improve control when slackening the hexagon collared nut, press the shop-made bush into the commercially available socket wrench bit

CAUTION:
- Installation: Replace hexagon collared nut and tighten in stages until the previously measured friction torque is obtained.
- Installation: Secure twelve-point or hexagon collared nut on drive pinion joint flange.

10 Pull off joint flange (41)

11 Press out radial seal (42) using a suitable tool

CAUTION: Installation: Replace radial sealing ring and coat sealing lip with universal hypoid gear oil


12 Replace final-drive unit (55) vent
13 Install in the reverse order
14 Check rear final-drive unit oil level and correct if necessary.