Adjustment Of Brake Controls On Reverse; Adjustment Of Parking Brake Actuator - Belarus 3522.5 Operator's Manual

3.9.8 Adjustment of Brake Controls on reverse

Check and adjust brake controls at reverse motion in the following order:
1. Adjust clearance between the piston 13 (figure 3.9.2) and the push rod 10 of pis-
ton of main brake cylinder 14, therefore disconnect the fork 12 from the pedal 15 and turn-
ing push rod 10 achieve the following: the pedal travel, measured on the centre of pedal
pad, should make between 6 and 12 mm from upper stop till the moment of contact of
push rod 10 with the piston.
2. Connect the lever 32 with the operating cylinder for reverse by means of the pin
23 in the bottom position of rod without clearance. By turn of the lever 32 the pin 23 should
move in cylinder rod groove without jamming.
3. Let brake fluid circulate through hydraulic system in the following order:
- remove cover of main brake cylinder for reverse14;
- check up level of brake fluid in the compensation chamber of the main brake cyl-
inder for reverse 1, this level should be 15 ... 20 mm from the top of the compensation
chamber;
- clear from dust and dirt the bypass valve 22, take off cap of valve, put a tube on
bypass valve head of the operating cylinder for reverse 21, and its free end put down in a
transparent tank with capacity not less than 0,5 l, that is half filled with brake fluid;
- press 4 or 5 times the reverse brake pedal and, keeping it in the pressed condi-
tion, turn the bypass valve of operating cylinder for reverse by 1/2 ... 3/4 revolution and
after full pedal travel when some portion of fluid with air will come out from the system,
close the valve. Press the pedal quickly, release smoothly! Repeat this operation some
times as long as all air comes out from system. Remove the tube from the valve and put
on a protective cap.
- fill the compensation chamber of main brake cylinder for reverse 14 with brake
fluid up to the necessary level, put on protective cover of the main cylinder.

3.9.9 Adjustment of Parking Brake Actuator

Before adjustment of parking brake actuator please adjust service brake drive
mechanisms as it is specified in subsections 3.9.7 "Adjustment of brake controls at forward
motion" and 3.9.8" Adjustment of brake controls on reverse".
Adjust the parking brake actuator in the following order:
1. By change of rods 5 length (figure 3.9.4) make clearance "A" between the pin
and the fork 26 sleet face of the rod 5 for the left brake (4+0,5) mm and for the right brake
(2+0,5) mm.
2. By brake tightening with control lever 11 (figure 3.9.5) with force (350+10) N the
clamper 12 of lever should be fixed in space of fourth or fifth tooth of sector 7.
3. The tractor should be held reliably at hill of 18 %.
4. When hand brake is on, the control signal lamp should blink on indicator of com-
bined instrument panel and should show that parking brake is active.
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