Belarus 3522.5, Operator'S Manual

Page: 293 / 340

3522.5-0000010 OM
294
6.4.5.6 Task 53. Change of hydraulic-brake fluid in clutch operating control drive
Change of hydraulic-brake fluid in clutch operating control hydraulic system on for-
ward drive and on reverse is required.
WARNING: EXCLUDE CONTACT OF HYDRAULIC-BRAKE FLUID WITH EYES
AND UNCOVERED SKIN AREAS!
ATENTION: EXCLUDE INGRESS OF MINERAL OIL, PETROLEUM, KEROSINE
AND DIESEL FUEL, AS THESE SUBSTANCES RESULT IN SWELL OF THE RUBBER
GASKETS!
1. Drain hydraulic-brake fluid from the hydraulic system performing the following ac-
tions:
- unscrew the cap (Figure 3.3.4) of the reservoir 1 of the forward drive master cylin-
der 12 and remove the envelope 23 of the main reverse cylinder19;
- dismount the safety cap 29 from the bypass valve 30;
- pivot the rubber hose on the bypass valve dipping its loose end into an empty con-
tainer;
- release the bypass valve 30 by one turn;
- press clutch pedal for forward drive 10 down several times until the hydraulic-
brake fluid is fully extracted from the forward drive hydraulic system;
- press the reverse clutch pedal 20 down several times until the hydraulic-brake fluid
is fully extracted from the reverse motion hydraulic system;
- screw the bypass valve 30, dismount the hose, put on the safety cap 29 back in its
place.
2. Fill forward drive main cylinder 12 tank 1 with the hydraulic-brake fluid up to the
“Max” level marked on the tank, and fill the compensating chamber of the reverse main
cylinder with the hydraulic-brake fluid up to the level of 10…15 mm from the top of the
compensating chamber.
3. Circulate fluid through the clutch operation control hydraulic system as it is re-
quired in clause 3.3.4.2 of subsection 3.3.4 “Clutch control adjustment”.
4. Place the reservoir cap 1 and the envelope 23 back in their places.
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