Belarus 3522.5, Operator'S Manual

Page: 294 / 340

3522.5-0000010 OM
295
6.4.5.7 Task 54. Change of hydraulic-brake fluid in break control drive
Change of hydraulic-brake fluid in break control hydraulic system on forward
drive
and on
reverse is required.
WARNING: EXCLUDE CONTACT OF HYDRAULIC-BRAKE FLUID WITH EYES AND
UNCOVERED SKIN AREAS!
ATENTION: EXCLUDE INGRESS OF THE MINERAL OIL, PETROLEUM, KEROSINE
AND DIESEL FUEL, AS THESE SUBSTANCES CAUSE THE SWELL OF THE RUBBER GAS-
KETS!
To change hydraulic-brake fluid in break control hydraulic system on forward
drive,
perform
the following:
1. Drain hydraulic-brake fluid from hydraulic system performing the following actions:
- unscrew the reservoir caps 1 and 2 and (Figure 6.4.40) of the main brake cylinders of for-
ward
drive
3 and 4;
- remove the safety caps from the fittings 5 of the left 6 and right wheel brake cylinders;
- pivot the hoses on the both fittings 5 one by one (beginning from the left) or synchronously
dipping their loose ends into an empty container;
- unscrew the both fittings 5 by ½ of a turn;
- press the pedals 7 and 8 synchronously until the fluid is fully extracted from the hydraulic
system;
- screw in the both fittings 5, dismount the hose, put on the safety caps back in their places.
2. Fill the tanks 1 and 2 of the main cylinders of forward
drive
3 and 4 with the hydraulic-
brake fluid up to the “Max” level marked on the tanks.
3. Circulate fluid through the break control hydraulic system in compliance with the task
№
4
in subsection 3.9.7 “Adjustment of brake controls at forward motion ”.
4. Place back the reservoir caps 1 and 2.
To change the hydraulic-brake fluid in the break control hydraulic system on reverse, per-
form the following:
1. Drain the hydraulic-brake fluid from the hydraulic system performing the following ac-
tions:
- remove the envelope 9 (Figure 6.4.40) of the main brake cylinder of reverse 10;
- remove the safety cap from the fittings 11 of the wheel brake cylinder on reverse 12;
- pivot the rubber hose on the fitting 11 dipping its loose end into an empty container;
- unscrew the fitting 5 by ½ of a turn;
- press the pedal 13 down for a while until the hydraulic-brake fluid is fully extracted from
the hydraulic system on reverse;
- screw in the fitting 11, dismount the hose, put on the safety cap back in its place.
2. Fill the compensating chamber main brake cylinder of reverse 12 with the hydraulic-
brake fluid up to the level 15…20 mm from the top of the compensation chamber.
3. Circulate fluid through the break control hydraulic system in compliance with the task
№
3
of subsection 3.9.8 “Adjustment of the brake controls on reverse”
4. Cover it with the envelope 9.
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