Replacement of lubricant should be made on the removed nave through 36 000 — 60 000 km of a run depending on service conditions. For this purpose it is necessary:

- to take off decorative and internal 7th caps of a nave;

- to weaken nuts of fastening of wheels, then to lift a jack a car wheel, to remove a wheel;

- to rasshplintovat a nut of a rotary fist and to turn off it;

- to remove a nave, to wash out it and bearings in kerosene, previously having removed old lubricant;

- to grease bearings and to fill an internal cavity of a nave with Litol-24 or Lita lubricant in number of 75 g on a nave;

- to establish a nave, to wrap a nut, to adjust bearings (as it is stated above), to zashplintovat a nut, to establish an internal cap, a wheel, previously to wrap a nut of fastening of a wheel;

- to lower a wheel from a jack. To finally tighten nuts of fastening of a wheel the moment of 300 — 380 N · m (30 — 38 kgfs · l);

- to establish a protective cap.

When replacing an epiploon it is necessary to execute the operations on removal of a nave given above. The epiploon should be pressed in a nave evenly. After a press fitting its back has to be in one plane with a nave end face.

The sizes of the interfaced details of naves of forward wheels are specified in tab. 6.3.