Checking the axial clearance of the crankshaft
The axial movement of the crankshaft is limited by two thrust half rings installed on both sides of the rear main bearing. A steel-aluminum half ring is installed on the front side of the bearing, and a metal-ceramic half ring is installed on the rear side (yellow color). Half rings are produced in normal thickness (2.310–2.360 mm) and increased thickness (2.437–2.487 mm).
1. The axial clearance between the thrust half rings and the thrust surfaces of the crankshaft is checked as follows:
- place the indicator on the magnetic stand and insert the ends of two screwdrivers as shown in the figure;
- move the shaft with screwdrivers and check the axial clearance using the indicator, which should be within 0.06–0.26 mm.
2. If the gap exceeds the maximum permissible 0.35 mm, replace the thrust half rings with others that are larger by 0.127 mm.
Note! The axial clearance of the crankshaft can also be checked on the engine installed in the vehicle using the 67.8701.9510 device. In this case, the axial movement of the crankshaft is created by pressing and releasing the clutch pedal, and the value of the axial clearance is determined by the movement of the front ring of the crankshaft.
[The original is available on the online resource VAZbook.ru]