2. Inspect the clutch and gearbox housings, as well as the rear cover. They should not have any cracks or chips. The mating surfaces should not have any nicks, scratches, dents, etc. Remove minor damage with sandpaper. In case of severe damage, replace the defective parts.
3. Check the bearing seats in both housings. These surfaces should not show any signs of wear or damage. If there is damage, replace the housings.
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4. Check the condition of the gear shift rods. If they are bent or there are burrs, nicks or wear on the dimples for the locks, replace the rods. Check the condition of the gear shift forks. If the forks are bent or the tabs are worn, replace these parts.
5. If oil leaks through the seals are detected during operation, or if the working edges are worn, the seals must be replaced.
6. Check the condition of the bearings. If there is pitting (cavities) on the raceways and rolling elements, traces of indentation of the rolling elements on the raceways, or if the separators are damaged, the bearings must be replaced.
7. Replace damaged or heavily compressed gaskets.