Contents: Removal ↓ Installation ↓
Removal
Block the front wheels with chocks to prevent the vehicle from moving. Raise the rear of the vehicle and support it on stands. Release the parking brake lever and place the gear shift lever in neutral.
Figure 10.10. Unscrewing the bolts securing the rear universal joint of the propeller shaft to the flange of the main rear gear
Remove the nuts and bolts securing the rear universal joint of the propeller shaft to the flange of the main rear gear (see figure 10.10). To access the nuts and bolts, rotate the driveshaft. Use soft wire to secure the rear of the driveshaft, do not let it hang on the support bearing.
Using a hammer and chisel, knock the nut flange out of the groove in the main reverse gear flange shaft.
Using a special tool, secure the flange of the main reverse gear from turning and unscrew the nut that secures it.
Remove the flange. If it does not come out by hand, use a two-jaw puller.
Use a flat-head screwdriver to remove the cuff. When removing, be careful not to scratch the groove for installing the cuff.
Installation
Clean the groove for installing the cuff. Lubricate the outer surface and the working edge of the cuff with oil.
Using a tubular mandrel with an outside diameter slightly smaller than the outside diameter of the seal, install the sealing cuff into the groove. Check that the cuff is installed without distortion and to the same depth as before.
Install the final drive flange and secure it with the nut, tightening it to an initial torque of 108 Nm.
Using a torque wrench, measure the preliminary turning torque of the final drive flange. If the torque is less than 0.6–0.8 N·m, tighten the nut, increasing the tightening torque by 12 N·m each time, but the final tightening torque should not exceed 235 N·m. If the nut tightening torque has reached 235 N·m, but the final drive flange turning torque has not been reached, replace the bearing spacer sleeve in the final drive.
After reaching the required torque of turning the flange, use a hammer and chisel to drive the flange of the nut into the groove of the main reverse gear shaft.
Connect the rear universal joint of the propeller shaft to the flange of the final drive, aligning the marks made before removal, and tighten the nuts and bolts to a torque of 74 N·m.
Check the oil level in the rear final drive and top up if necessary.