Rear Axle/Removing and Installing Rear Final Drive

Removing and installing rear final drive

Tools





Preliminary work for rear final drive
1. Remove exhaust system.

Preliminary work: Rear final drive
1. Remove exhaust system.
2. Remove longitudinal interlock servo motor.

Preliminary work: Rear final drive
1. Remove longitudinal interlock servo motor.

Removing rear final drive

Overview Of Rear Carden Shaft:

1. Move selector lever to position N.





2. Loosen fastening screws for fixing cardan shaft centre bearing holder to body.





3. Loosen bolts for fixing centre bearing to holder.





Note:
^ The colour marking, match point, on the cardan shaft and on the flange of the rear final drive must be installed in alignment -arrows-. This will neutralise the residual imbalance of the components.

Note:
^ To loosen the cardan shaft on the rear axle transmission, a second fitter should counter the fastening screws on the triangular flange of the transfer box.





4. Remove cardan shaft from rear axle transmission and tie it up.





Note:
^ To loosen the drive shaft bolts on the rear axle transmission, a second fitter should sit in the vehicle and block the rear-axle final drive by actuating the foot brake.

5. Remove both drive shafts on transmission side and tie up.
6. Support transmission jack and rear axle transmission with retaining band.





7. Unscrew fastening screws for final drive. To do this, counter with ring wrench.





8. Tip drive flange upwards -arrow- and gradually drain rear axle transmission. Remove bleeder line at the same time.





9. Remove transmission and pull off bleeder line.

Installing rear final drive





Note:
^ Screws which are tightened with a torque angle must be replaced with new ones.





Note:
^ The colour marking, match point, on the cardan shaft and on the flange of the rear final drive must be installed in alignment -arrows-. This will neutralise the residual imbalance of the components.

1. Secure rear axle transmission on transmission jack with retainer band.





2. Run in rear axle differential by gradually tipping the drive flange upwards -arrow-. Connect bleeder line at the same time.
3. Screw in new fastening screws on final drive. To do this, counter with ring wrench. Initial tightening: 67 ftlb. Final tightening: 67 °

Note:
^ To tighten the drive shaft bolts on the rear final drive, a second fitter should sit in the vehicle and block the rear-wheel drive assembly by actuating the foot brake.

4. Attach drive shafts with new screws.





ATTENTION: Cardan shaft can be damaged by imbalance.
^ Cardan shaft and flange not installed in original position.
^ The colour marking, match point, on the cardan shaft and on the flange of the rear final drive must be installed in alignment. This will neutralise the residual imbalance of the components.

Note:
^ To attach the cardan shaft to the rear final drive, a second fitter should counter the fastening screws on the triangular flange of the transfer box.

5. Attach cardan shaft with new screws.





6. Screw in fastening screws for fixing cardan shaft centre bearing holder to body. Tightening torque: 44 ftlb.





Note:
^ Centre bearing must be installed without tension.
^ Fit special tool centring tool 9680-Werkzeug in Einbaulage- in the order specified.





7. Position special tool centring tool 9680.





8. Press on special tool centring tool 9680 in sequence according to numbering -1, 2-.





9. Tighten threaded joints -arrow- connecting support to centre bearing. Tightening torque: 15 ftlb.





10. Remove special tool centring tool 9680.

Subsequent work for rear final drive
1. Install the exhaust system.

Subsequent work: Rear final drive
1. Install the exhaust system.
2. Install servo motor for rear-differential lock.

Subsequent work: Rear final drive
1. Install servo motor for rear-differential lock.