If vibrations occur after repair or replacement of transmission components:
1. Raise the car on a lift to a height convenient for work, loosen the nuts securing the crossmember of the gearbox support to the car body and move the unit to the left until it stops (figure 3-30). Tighten the nuts in this position. The arrow in the figure indicates the direction of movement of the car.
Warning. It is prohibited for people to be inside the vehicle while it is being lifted and repaired. Exercise extreme caution when working under the vehicle. To avoid injury, keep your hands and tools away from rotating transmission parts.
Figure 3-30. Installing the transmission support crossmember.
2. If the defect is not eliminated, center the transfer case:
- set the transfer case gearshift handle to neutral. Start the engine, engage second gear with the gearshift lever. The car should not move. Raise the car on a lift to a height convenient for work;
- loosen the six nuts securing the transfer case to the body;
- by turning the transfer case on the studs, achieve such a position of the transfer case relative to the body, in which the vibration of the intermediate cardan shaft is minimal;
- while holding this mode, tighten the nuts securing the transfer case to the body;
- lower the car, stop the engine.
3. If the defect is not eliminated, install additional washers (figure 3-31) 2.5 mm thick between the cross member of the rear support of the transfer case and the car body (one washer for each stud).
4. If the defect is not eliminated, reinstall the rear propeller shaft, for which:
- unscrew the bolts securing the propeller shaft to the flanges of the transfer case and the rear axle gearbox;
- turn the shaft relative to the flanges of the transfer case and the rear axle gearbox by 180°;
- secure the shaft in this position.
5. If the defect is not corrected, reinstall the front propeller shaft in the sequence indicated above.
6. If the defect is not corrected, replace the rear propeller shaft.
7. If the defect is not eliminated, replace the front propeller shaft.
8. If the defect is not eliminated, replace the intermediate cardan shaft.
Figure 3-31. Installing washers under the transfer case rear support crossmember.