Attention! When installing the cardan shaft, it is necessary to use new nuts for fastening the front and rear parts of the cardan shaft.
Removing
The location of the nut that secures the rear of the bracket to the gearbox (1) and bolts (2), fixing the bracket to the bottom of the body
Nut location (1) propeller shaft splined coupling and bolts (2) center bearing mounts
The location of the alignment marks on both parts of the drive shaft
1. Raise the rear of the car and secure it on stands.
2. Unscrew and remove the exhaust heat shield. If necessary, unscrew and remove the brackets mounted across the driveshaft tunnel.
3. Place a jack under the gearbox and raise it just enough so that the weight of the power unit is supported by the jack.
4. Unscrew the nut that secures the rear of the bracket to the gearbox and the bolts that secure the bracket to the underbody and remove the bracket (see fig. The location of the nut that secures the rear of the bracket to the gearbox and the bolts that secure the bracket to the bottom of the body).
5. Using a wrench, loosen the spline nut located near the center bearing two turns. When doing this, be careful not to damage the rubber protective boot (see fig. Arrangement of the nut of the spline coupling of the cardan shaft and the bolts of the central bearing).
6. Apply alignment marks to the driveshaft flexible coupling and transmission output flange. Then unscrew the nuts and remove the bolts securing the flexible coupling to the gearbox output flange. When installing, new nuts must be used.
7. Apply alignment marks to the propeller shaft flexible coupling and the rear final drive flange. Unscrew the nuts and remove the bolts securing the flexible coupling to the rear final drive. When installing, new nuts must be used.
8. While supporting the propeller shaft, unscrew the bolts securing the center bearing bracket. Move the rear of the driveshaft forward and disconnect the driveshaft from the rear final drive flange. Disconnect the front of the driveshaft from the transmission output flange and remove the driveshaft.
Attention! If the driveshaft will be disassembled, pre-apply alignment marks on both parts of the driveshaft. This is necessary for the correct assembly of the cardan shaft, otherwise the balance of the shaft will be disturbed, which will cause vibration and additional noise during movement. Some models already have alignment marks applied to both parts of the driveshaft. The mark on the front of the driveshaft should be in the middle of the marks on the universal joint (see fig. The location of the alignment marks on both parts of the drive shaft).
9. Check up a condition of rubber elastic couplings of the central bearing and the universal joint.
Installation
Tightening the nuts securing the propeller shaft coupling to the gearbox flange
1. On models with a shaft sleeve located on the gearbox and a bronze shaft end, lubricate the sleeve with molybdenum disulphide lubricant. If the bushing is not made of bronze, use multipurpose grease.
2. Install the cardan shaft in place, while aligning the marks on the flexible couplings of the cardan shaft with the marks on the output flange of the gearbox and the rear final drive flange. Secure the center bearing bracket with the bolts, but do not completely tighten them.
3. Check the alignment of the marks, then insert the bolts of the flexible coupling of the propeller shaft to the rear final drive and screw on the new nuts, tightening them to the required torque.
4. Check the alignment of the marks, then insert the bolts of the flexible coupling of the cardan shaft to the output flange of the gearbox, screw new nuts on them and tighten them to the required torque (see fig. Tightening the nuts securing the propeller shaft coupling to the gearbox flange).
5. Tighten bolts of fastening of an arm of the central bearing the demanded moment.
6. Check that the propeller shaft protector is properly installed and tighten the spline nut to the correct torque.
7. Install the gearbox rear mounting bracket and tighten the nut and bolts to the correct torque.
8. Install the exhaust heat shield and brackets, then lower the vehicle.