Removing and Installing Rear Final Drive
Removing and installing rear final driveTools
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 cardan shaft
1. Move selector lever to position N.
2. Loosen fastening screws for fixing cardan shaft centre bearing holder to body.
Cardan shaft support to body
3. Loosen bolts for fixing centre bearing to holder.
Centre bearing to cardan shaft holder
Note: The color marking, match point, on the cardan shaft and on the flange of the rear final drive must be installed in alignment -arrows-. This will neutralize the residual imbalance of the components.
Match points on the cardan shaft
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.
Tying up rear cardan shaft
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.
Removing rear drive shaft
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.
Mount for rear final drive
8. Tip drive flange upwards -arrow- and gradually drain rear axle transmission. Remove bleeder line at the same time.
Removing rear final drive
9. Remove transmission and pull off bleeder line ->Removing bleeder line.
Removing bleeder line
Installing rear final drive
Note: Screws which are tightened with a torque angle must be replaced with new ones. Mount for rear final drive
Note: The color marking, match point, on the cardan shaft and on the flange of the rear final drive must be installed in alignment -arrows-. This will neutralize the residual imbalance of the components.
Match points on the cardan shaft
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.
Installing transmission
3. Screw in new fastening screws on final drive. To do this, counter with ring wrench. Initial tightening 67 ft. lbs. 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 color marking, match point, on the cardan shaft and on the flange of the rear final drive must be installed in alignment. This will neutralize 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. Cardan shaft to rear final drive
6. Screw in fastening screws for fixing cardan shaft centre bearing holder to body. Tightening torque 44 ft. lbs.
Cardan shaft support to body
Note:
^ Centre bearing must be installed without tension.
^ Fit special tool centering tool 9680-Werkzeug in Einbaulage- in the order specified. Installation position for special tool
7. Position special tool centering tool9680. Alignment of special tool 9680
8. Press on special tool centering tool 9680 in sequence according to numbering -1, 2-.
Installation of special tool 9680
9. Tighten threaded joints -arrow- connecting support to centre bearing. Tightening torque 15 ft. lbs.
Cardan shaft support to centre bearing
10. Remove special tool centering tool 9680.
Removal of special 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.