Operation 42. Check / Adjustment Of Parking Brake Control - Belarus 922.6 Operator's Manual

5. Check the value of the unlocked pedals full travel separately applying force of 270-
300 N which shall be within 100 to 120 mm. In case the value of the pedal full travel ex-
ceeds the specified limits, it is required to make adjustments doing the following operations:
- uncrew counter nuts of rod-bolts 6 and 10 (Figure 5.4.26) by several revolutions;
- screw in and screw out adjusting rod-bolts 6 and 10 of the right and left service
brakes;
- lock the rod-bolts.
6. Check the efficiency of service brakes operability during tractor movement along
dry road with hard surface with the clutch off. When the interlocked brake pedals are de-
pressed with the force of 550 to 600 N, the length of braking path shall not exceed 6,4m
with the tractor travel speed of 20 km/h. Unevenness of tractor movement in the process of
braking shall not exceed 0,5m. If necessary, adjust the simultaneity of braking start by
means of one of adjustable bolt-links 6 or 10.

5.4.3.5 Operation 42. Check / adjustment of parking brake control

ATTENTION: CHECKS AND ADJUSTMENTS OF THE PARKING BRAKE AS WELL
AS TROUBLESHOOTING SHALL BE PERFORMED WITH THE ENGINE OFF AND THE
TRACTOR BEING FIXED IN HORIZONTAL POSITION WITH STOPS UNDER THE
WHEELS WHICH EXCLUDE SPONTANEOUS TRACTOR MOVEMENT! ONLY DEALERS
ARE ALLOWED TO PERFORM ADJUSTMENTS AS WELL AS TROUBLESHOOTING OF
THE PARKING BRAKE!
Before making adjustments of the parking brake control, adjust service brakes first.
Check of the parking brake efficiency means that the tractor shall hold back on a
slope of not less than 18% as you apply the force of 350-400 N to lever handle 1 (Figure
5.4.27). If this condition is not met it is required to carry out adjustment of the parking brake
control.
Adjustment of the parking brake control of the tractor without pneumatic control sys-
tem for trailer brakes shall be carried out as follows:
set lever 1 (Figure 5.4.27) into the lowermost position (off-position);
release the locknut of adjusting bolt 5 (the locknut is not shown in Figure 5.4.27);
release locknut 6 of yoke 8;
unlock and remove pins 9 and 11;
turn lever 10 and align the upper edge of slots C of levers 3 and 4
by turning yoke 8 align holes of lever 10 and of yoke 7. Mount pin 9 and lock it.
Tighten locknut 6;
mount pin 11 and lock it;
adjust the travel of lever 1 (by rotating bolt 5) in such a way that the latch stays in slot
A or slot B of quadrant 2 (which corresponds to the second or the third click as the parking
brake is getting engaged), when the effort of 350-400 N is applied to the handle of lever 1.
If the parking brake is adjusted correctly, the tractor shall hold back on a slope of not
less than 18% as you apply the force of 350-400 N to the handle of lever 1. If necessary ad-
just the control by means of adjusting bolt 5.
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922.6-0000010 OM