Belarus 1523, Operating Manual

Page: 134 / 312

BELARUS-1523/1523 В /1523.3 /1523В.3 Construction and Operation
127
cylinder and put its free end into a
transparent vessel with the capacity of
at least 0.5 l filled with brake fluid to
half of its volume;
• Step on the interlocked brake pedals
4...5 times and, while holding them
down, turn out the valve of the left-
hand service cylinder by 1/2…3/4
turns. When, following a full pedal
stroke, part of the fluid with air bubbles
is bled from the system, turn the valve
in and release the brake pedals. Step
on them quickly and release them
smoothly! Repeat this operation sev-
eral times until air is bled completely
from the system. Remove the tube
from the valve and refit the protective
cap.
• Bleed air from the hydraulic actuator
of the right hand brake.
• Top up fluid in both reservoirs (17, 18)
to the “Max” mark (10...20 mm from
the top end-face of the reservoir); re-
move tubes from the valves and refit
protective caps.
Check the full travel of unlatched pedals
under a force of (300±30) N applied. It
shall be within 100…120 mm. If the full
travel of the pedal falls outside these lim-
its, readjust them proceeding as follows:
• Turn out the locknuts of the link bolts
(6, 10) by several turns.
• Turn the adjusting link bolts (6, 10) of
the right- and left-hand service brakes
in or out.
• Lock the link bolts.
Check the efficiency of the service
brakes with the tractor on move on a dry
hard-surface road, with the clutch disen-
gaged. With the latched pedals pressed
down at 590...600 N, the stopping dis-
tance shall not exceed 6.4 m at a tractor
speed of 20 km/h. The deviation of the
tractor motion during the braking shall
not exceed 0.5 m. If necessary, adjust
simultaneity of the beginning of the brak-
ing using one of the adjusting link bolts
(6) or (10).