If knocks are heard in the front drive while the car is moving in turns, check the constant velocity joints. If play is felt when the drive shaft is rocked by hand or protective covers are torn, such a hinge must be replaced. Dismantling Type Outer Hinge «Bearfield» practically makes no sense. This work is time-consuming, and if the cover is torn, the dirt that gets into the hinge will render the hinge parts unusable. It is impossible to replace the hinge parts individually, so the best solution is to replace the hinge assembly. In extreme cases, disassembly is allowed to replace the lubricant of the inner joint type «tripod» as simpler and less prone to water and road dirt. The appearance of traces of grease on the hinge indicates that the cover is torn.
1. Remove the front wheel drive assembly (see «Removal and installation of front wheel drives»).
2. Clean the parts and inspect the drive:
- the outer CV joint must turn with a slight effort, without jerking and jamming, radial and axial play. If present, replace the hinge;
- the inner hinge should move in the angular and axial directions with a slight effort, while jerking, jamming and radial play should not be felt. Otherwise, replace the inner joint;
- on the protective covers of the outer and inner hinges there should be no cracks and breaks. Replace damaged cases;
- the wheel drive shaft must not be deformed. Replace the deformed shaft.
3. To replace the outer hinge and its cover, disconnect with a screwdriver or bite with side cutters the lock of the large collar securing the outer hinge cover...
4.... and remove the clamp.
NOTES: Clamps for fastening the protective covers of constant velocity joints are one-time use, replace them with new ones when assembling. As a rule, clamps are included in the kit of a new hinge.
To facilitate removal, the clamp can be sawn with a hacksaw for metal. When sawing the clamp, be careful not to damage the edges of the groove for the cover on the hinge body.
5. Slide the protective cover off the hinge housing...
6.... and knock the hinge cage off the shaft with a hammer through the beard, overcoming the force of the retaining ring.
7. Remove the outer joint from the shaft splines.
WARNING: Disassembly of the outer hinge is not permitted.
8. Remove the circlip from the shaft by prying it out of the shaft groove with a screwdriver.
NOTE: When assembling, replace the circlip with a new one. As a rule, the ring is included in the kit of the new hinge.
9. Disconnect with a screwdriver or bite with side cutters the lock of the small clamp of the outer cover of the hinge...
10.... and remove the clamp.
11. Remove the thrust washer.
12. Remove the protective cover.
13. Wash all metal parts with kerosene until the old grease is completely removed.
NOTE: When installing the hinge, replace the protective boot with a new one. Usually a boot is included with the new hinge.
USEFUL ADVICE: In order not to damage the hinge cover during assembly, wrap the spline part of the shaft with insulating tape.
To facilitate installation of the boot on the shaft, lubricate the shaft with a thin layer of lubricant designed to fill the hinge.
14. Before installing a new outer joint, fill its cavity with grease (if the hinge has not been lubricated by the manufacturer) in an amount of about 100 g. Moreover, put 40 g in the hinge, and the rest of the lubricant in the case.
WARNING: Do not reduce or increase the recommended amount of grease in the joint.
15. Establish a cover of the external hinge and the hinge in an order, the return to removal. When installing the hinge on the shaft, press the hinge with hammer blows on the hinge shank through a soft metal drift or with a rubber hammer until the hinge cage is fixed with a retaining ring mounted on the drive shaft.
WARNING: Before securing the hinge boot with a large tie, use a screwdriver to pull back on the edge of the boot to equalize the air pressure inside and outside the boot.
USEFUL ADVICE: There are some rules for crimping clamps.
This is what a new, uncompressed clamp looks like.
The criterion for the correct compression of the clamp is gap A. It should be in the range of 1.4-1.8 mm. If the gap is greater, tighten the clamp to normal; if less, replace clamp.
16. For disassembly and replacement of inner hinge type «tripod» remove the clamp securing the hinge cover to its body, for which disconnect the clamp lock with a screwdriver or bite with side cutters.
17. Similarly remove a collar of fastening of a cover of the internal hinge to a shaft.
18. Disconnect the inner pivot housing from the drive.
19. Remove the circlip of the pivot hub by unclenching it with a circlip extractor and removing the ring from the shaft groove.
20. Remove the hub with rollers from the splines of the shaft...
21.... and a protective cover from the shaft.
22. Wash all metal parts with kerosene until the old grease is completely removed.
23. Install the hinge cover on the shaft and secure it with a clamp.
NOTE: To avoid damage to the pivot boot during reassembly, wrap the shaft spline with electrical tape.
24. Install the hinge hub on the splines of the shaft, aligning the marks made during disassembly, and fix it with a retaining ring. Make sure the circlip is fully seated in the groove on the shaft.
25. Fill the cavity of the inner hinge with grease in an amount of about 100 g. And put 40 g into the hinge, and the rest of the grease into the case.
NOTE: In the absence of a lubricant recommended by the manufacturer, domestic molybdenum grease SHRUS-4 can be used.
26. Install the hinge housing, aligning the marks made during disassembly.
27. Put a cover on the hinge body and secure it with a collar.
WARNING: Before securing the hinge boot with a large tie, use a screwdriver to pull back on the edge of the boot to equalize the air pressure inside and outside the boot.