Cardan transmission of VAZ-2129 and VAZ-2131 cars (VAZ-21213)

The increase in the vehicle base by 500 mm entailed design changes to the driveshaft. The changes affected the rear driveshaft and are as follows:

• an additional rear propeller shaft has been introduced;
• intermediate support installed;
• the front cardan shaft joint has been replaced with a constant velocity joint.
• the cardan transmission safety bracket is installed.

Disassembling the cardan transmission

Before disassembling the cardan transmission removed from the vehicle, mark the separated parts in order to connect them in the same position during assembly and maintain the shaft balancing unchanged.

Having separated the shafts, unscrew the nut securing the flange of the additional cardan shaft, then use the puller A.40005/1/5 to remove the flange from the splines.

Remove the intermediate support assembly with the bearing under a press using backing rings (Fig. 9-50).



When checking the technical condition of the intermediate support, check the condition of the bearing by rotating the inner ring in both directions and simultaneously pressing it against the outer ring. The inner ring of the bearing should rotate smoothly, without jamming. Also check the condition of the bearing seals. If the bearing is worn or damaged, replace it with a new one. Check for damage or deformation of the intermediate support. If necessary, replace it with a new one.



To disassemble the intermediate support, remove the retaining ring (Fig. 9-51) and use puller A.40005/2/4/11 to press the bearing out of the support (Fig. 9-52).

Assembly of the cardan transmission

When assembling the intermediate support, press the bearing with a mandrel (Fig. 9-53) and install a retaining spring ring in the support groove.



Before installing the intermediate support, place the dust deflector on the rear end of the additional shaft. Then use a mandrel to press the support with the bearing (Fig. 9-54) and place the second dust deflector. Apply FIOL-1 grease to the splined joint and, aligning the marks, press on the flange. Tighten the flange fastening nut to a torque of 8.5 N·m and calk.




(The article is taken from an online resource vazbook.ru)