Check And Adjustment Of Play In Differential Tapered Bearings; Check And Adjustment Of The Master Pair Backlash - Belarus 3522.5 Operator's Manual

3.6.6 Check and adjustment of play in differential tapered bearings

Axial play in the differential tapered bearings shall be 0,1 to 0,15 mm. Trying shims
2 (figure 3.6.4) under a cover 1, and if necessary under a cover 4, adjust bearing play.
The axial play shall be checked when moving the differential in axial direction with
application of force from 500 to 600 N.
The differential shall turn without seizure. The adjustment shall be carried out on the
rear axle body without the final drives 2 (figure 3.6.1) and the plate 1 in the rear axle as-
sembly. When carrying out adjustment turn the differential in bearings so that the rollers
took their position in cages.

3.6.7 Check and adjustment of the master pair backlash

The master pair backlash shall make 0,25 to 0,5 mm, the backlash variation shall
not exceed 0,2 mm for one pair. The contact pattern shall be not less than 50% of the sur-
face with impress location in the middle part of the tooth.
The backlash shall be adjusted by moving a certain amount of washers from under
the cover 4 (figure 3.6.5) under the cover 1 or vice versa, without changing their total num-
ber.
Before mounting the plate 3 ready-assembled with a drive gear of the master pair to
the axle body, check and if necessary set an installation dimension of the plate equal to
380±0,1 mm at the cost of changing the number of shims 4 (figure 3.6.6).
When mounting the plate pay attention to a position of the outer ring of a double-
row spherical bearing 9 (figure 3.6.6), turning and displacing on rollers. To prevent dis-
placement of the outer ring use a fixture, which centers the bearing outer ring.
ATTENTION: REPLACE THE MASTER PAIR GEARS ONLY AS A SET. THE MASTER
PAIR GEARS SHALL HAVE IDENTICAL NUMBERS!
ATTENTION: DIFFERENTIAL BODY, DIFFERENTIAL COVER AND LOCK BODY
SHALL BE REPLACED ONLY AS A SET. THE BODIES SHALL HAVE IDENTICAL NUM-
BERS!
1 – left cover; 2 – shims; 3 – bolt; 4 – right cover.
Figure 3.6.4 – Differential in rear axle body
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