- the ball bearing is not worn or damaged; if the axial clearance in it exceeds 0.7 mm, replace the bearing;
- locking ring and bearing have not received any displacement relative to the original fit; if the inner ring of the bearing rotates relative to the seat belt of the axle shaft, replace the locking ring;
- bearing mounting plate and oil deflector are not damaged;
- the axle shaft is not deformed and the seating surfaces are not damaged; the runout of the axle shaft, measured in the centers on the neck under the stuffing box, should not exceed 0.08 mm. Before installing in the centers, carefully clean the centering holes on the axle shaft from dirt and rust.
If wear or damage is found on the parts installed on the axle shaft, replace them with new ones in compliance with the rules below and using special tools. Eliminate slight bending of the axle shaft by editing. After straightening the axle shaft, the runout of the flange end, measured in the centers, should not exceed 0.05 mm. If the runout of the flange end is more than specified, but not more than 0.08 mm, then it is allowed to turn it to eliminate the end runout. Reducing the thickness of the flange, due to its groove, is allowed no more than 0.2 mm.