Brakes; General Information; Service Brakes Control - Belarus 3522.5 Operator's Manual

3.9 Brakes

3.9.1 General Information

The tractors BELARUS - 3522.5 are equipped with the disk brakes working in the oil
bath.
1 – casing; 2 – cover; 3 – pressure disk; 4 – coupling springs; 5 – expanding balls; 6
–intermediate disk; 7 – pin; 8 – frictional disk ; 9 – hub; 10 – shaft; 11 – locking ring; 12,13
– rod; 14 – mounting disk; 15 – pin.
The brake consists of the following parts: casing 1 (figure 3.9.1), cover 2, pressure
disks 3 which are tightened together with springs 4, expanding balls 5, mounting disk 14
fixed by turn of pins 7, intermediate disks 6 mounted on pins 15 of pressure disks 3, fric-
tional disks 8 with ceramic-metal pads, hub 9 mounted on splines of shaft 10 and fixed on
it by locking ring 11, rods 12 and 13. The brakes are controlled by means of rods 12, 13
connected with brakes drive mechanisms. When pressed brake pedal, the fluid arrives in
operating cylinder which piston influences through a push rod a lever connected with rods
13 and 12. The rod 13 during movement turns towards each other pressure disks 3 which
being running on the balls 5 placed in the holes of variable section and made on non-
working surfaces of pressure disks press the rotating frictional disks 8 between fixed de-
tails and in such way the tractor brakes.

3.9.2 Service Brakes Control

The brake drive is intended for brakes control as well as at forward motion andon re-
verse. The type of brake drive is hydrostatic with hanging pedals. The drive (figure 3.9.2)
consists of main cylinders 4 (for forward motion) and 14 (for reverse), hanging pedals 9 (for
forward motion) and 15 (for reverse), operating cylinders 16 (for forward motion) and 21 (for
reverse) and tanks 5.
Figure 3.9.1 – Brake
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