7.2.5. Replacement of hug bearings of a back wheel

External signs of need of replacement of bearings of a back nave:
– the increased noise at rotation of a wheel;
– impossibility adjustment to achieve a nominal gap in bearings.
It will be required to you: a stripper of internal lock rings, the screw-driver with a flat edge, a drift, the hammer.
1. Remove a nave assembled with bearings (see. "Removal and installation of a nave of a back wheel").
2. Take out the external hug bearing.
3. Having hooked the screw-driver, take an epiploon from a nave …

Note
After a vypressovka the epiploon is not suitable for further application. Replace it new.

4. … persistent washer of an epiploon of a nave …
5. … also take out the internal hug bearing.
6. Wash out all details in kerosene.

Prevention
Examine racetracks of internal and external rings of bearings, and also working surfaces of rollers. Pitting, visible wear of separators, rollers and rings, and also sinks and chips on rollers and rings are not allowed. Replace defective bearings surely together with external rings. Change external and internal bearings at the same time.

7. With the help a small beard easy blows of the hammer to perimeter of an external ring of the internal bearing to a vypressuyta a ring from a nave …
8. … also remove it.
9. Squeeze short moustaches of an internal lock ring a stripper and remove it.
10. Similarly take an external lock ring …
11. … and vypressuyta external ring of the external bearing.
12. Press new rings of bearings in a nave a mandrel of suitable diameter.

Prevention
The insufficient press fitting or distortion of a ring are not allowed. Check reliability of landing of rings in the nave case. Rings should not be turned from effort of a hand.

13. Fill with lubricant an internal cavity of a nave and apply lubricant on external rings of bearings.
14. Establish details as it should be, the return to removal.

Good advice
The removed epiploon can be used as a mandrel for a press fitting of a new epiploon.