- 0.5 mm at a distance of 50 mm from the end welds;
- 0.3 mm in the middle part.
If the runout exceeds the specified values, straighten the shaft under a press or replace it.
Spline connection. Check the clearance in the spline connection of the sliding fork of the front and rear shafts, as well as in the connection of the flange with the intermediate shaft. The maximum permissible circumferential clearance for the average diameter of the splines is 0.30 mm.
Check for plug in plug 5 (see figure 3-44), condition of the sleeve 7 and the seal 6 of the sliding fork, as well as the sleeve 5 (see figure 3-43) and seal 4 of the intermediate shaft flange. If necessary, replace the seal, and if damaged, the collar.
Cardan joints. Check the condition of the bearing housings, needles, crosspiece pins, seals, end washers.
If the bearing housings, crosspiece needles and pins, as well as seals or end washers are damaged or worn, replace the crosspiece assembly with bearings.
The diameter of the fork hole for the needle bearing must not exceed 28.021 mm.
Check the condition of the intermediate propeller shaft joint.
Check the condition of cover 11 and casing 12. The parts should not have any damage, deformation from twisting, or traces of grease ejection. The parts of hinge 14 should not have any damage, nicks, or burns.
If the working surfaces of the intermediate shaft joint parts are damaged or worn by more than 0.1 mm, replace the joint assembly.
Note: Installation on the hinge shaft requires replacement of the retaining ring.
Elastic coupling. Check the condition of the rubber elements of the elastic coupling. If there are cracks or separation of the rubber from the metal inserts, replace the elastic coupling.