Belarus 1523, Operating Manual

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BELARUS-1523/1523 В /1523.3 /1523В.3 Construction and Operation
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(30) and piston lifter (32) of the hydraulic
booster (39):
- Dismantle the master cylinder (30)
from the bracket (33) having removed
the pin (34);
- Set the piston lifter (31) in the cylin-
der (30) to the rightmost position until it
rests against the cover;
- Move the cylinder (30) until it contacts
the piston lifter (32) of the hydraulic
booster (39) without effort and align the
holes of the support (26) with those of the
bracket (33) by turning the support (26) in
or out; then screw the support in by 1/2
revolutions and refit the pin (34);
- Tighten the locknut (27) and fix the
pin (34) with a cotter pin;
4. Adjusting the free travel of the
clutch release shifter:
- Remove the two release springs
(47);
- Disconnect the rod (41) from the
lever (45) having removed the pin (44);
- Unlock the fork (43);
- Move the rod (41) to the right until
the piston (38) of the hydraulic booster
(39) rests against the cover (37), turn
the lever (45) counter-clockwise until the
release bearing rests against the re-
lease levers and align the holes of the
lever with those of the fork by rotating
the fork (43); then turn the fork in by
5...5.5 revolutions (dimension “L”) and
connect the same with the lever by
means of the pin (44);
- tighten the nut (42), fix the pin (44)
with a cotter pin and refit the two release
springs (47).
Bleed air from the hydraulic clutch
control system.
Bleeding the air from the hydraulic
clutch control system
Prior to bleeding, fill the reservoir (1)
of the master cylinder for forward motion
(10) and the equalizing chamber of the
master cylinder for reverse (19) with
brake fluid.
1. Bleed air from the hydraulic system
in the forward motion. To do this :
- Fill the reservoir (1) with brake fluid
to the mark “MAX”;
- Remove the protective cap (28)
from the cylinder (30) and fit a rubber
hose onto the head of the bypass valve
(29). Dip another end of the rubber hose
into a vessel with brake fluid;
- Step on the clutch pedal several
times; while holding down the pedal,
turn out the bypass valve (29) by quarter
of revolution to release the excess fluid
brake with air bubbles into the vessel
with brake fluid;
- Turn in the bypass valve (29) and
release the clutch pedal;
- Bleed air from the system until the
air bubbles in the released brake fluid
disappear completely;
- Remove the hose and refit the pro-
tective cap (28);
- Check the brake fluid level in the
reservoir (1) and add it as necessary.
2. Bleed air from the hydraulic system
in the reverse mode. To do this:
- Remove the boot (13) of the master
cylinder (19);
- Check the brake fluid level in the
equalizing chamber of the master cylin-
der (19), which shall not be below di-
mension “G” from the top edge of the
equalizing chamber;
- The procedure of bleeding air from
the hydraulic system is similar to that for
the forward motion.
3. Check the bleeding of air from the
hydraulic system according to item 1.
ATTENTION! When bleeding air from
the hydraulic system:
• for forward motion: maintain the
brake fluid level in the tank (1) be-
tween the marks “MIN” and “MAX”;
• - for reverse mode: maintain the
brake fluid level in the equalizing
chamber of the master cylinder (19)