Differential - Belarus 3522.5 Operator's Manual

3.6.3 Differential

Differential body
Differential cover
1 – differential bolts; 2 – locking plates of differential bolts; 3 – sleeves; 4 – axle-
shaft gears; 5 – spider pinions; 6 – rollers; 7 – differential center cross; 8 – differential
cover; 9 – spider pinion washers; 10 – differential body; 11 – washers of axle-shaft gears;
12 – friction plates; 13 – center plates; 14 – clutch; 15 – cast iron ring; 16 – lock body; 17
– cast iron ring; 18 – piston; 19 – bolts; 20 – locking plates.
The differential provides rotation of driving wheels with different speeds. The differ-
ential is of a closed type, taper, with four spider pinions.
The body 10 (figure 3.6.2) and the cover 8 of the differential are fixed to each other with
bolts 1, which are locked against self-unscrewing by the locking plates 2. In the body and the
cover of the differential a center cross 7 with four pins is mounted. Four spider pinions 5 staying
in permanent engagement with axle-shaft gears 4 are mounted on center cross pins on rollers
6. Sleeves 3 serve to fix rollers in axial direction. To increase wear resistance of bodies, round
washers 9 are mounted under the spider pinions, and washers 11 are mounted under the axle-
shaft gears, locked against turning by juts in the body and in the cover of the differential.
In the differential lock body a multidisk friction clutch of the differential lock is
mounted. The lock is actuated by pressurized oil supply under the piston 18, which when
moving compresses the friction plate packs and locks the differential lock body with the axle-
shaft gears 4 through the clutch 14 and the right sun gear 39 (figure 3.6.3) of the final drive.
The driven gear of the master pair is mounted on the groove of the lock body. The
lock body with the driven gear is connected by the bolts 19 (figure 3.6.2) with the differen-
tial body 10. The bolts 19 are locked by the lock plates 20.
The friction plates 12 are sat on splines of the clutch 14, and the center plates 13
are locked against turning be means of their juts in grooves of the lock body 16. The piston
is sealed by cast iron rings 15 and 17. Oil is delivered to the piston of the lock clutch
through the holes in the body. Oil delivery to the differential is sealed by cast iron rings 38
(figure 3.6.3).
The differential lock control is electrohydraulic.
Figure 3.6.2 – Differential
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Lock body