MTZ 1220.3 - Page 203

MTZ 1220.1/1220.3 K. Scheduled technical maintenance
K23
Before adjusting the parking brake, install
the tractor on an even surface, stop the
engine and lock the rear wheels from front
and rear:
• Shift the lever (1) to the extreme front
(off) position.
• Loosen the locknut (2) of the adjust-
ment bolt (3) of the parking brake (on
the right side of the tractor).
• Screwing in or out the bolt (3), obtain a
complete disengagement of the parking
brake at the fourth tooth of the sector
(A) under a force on the lever (1) of 350
N.
• Lock the bolt (3) with the nut (2).
If the tractor is equipped with a pneumatic
system and works with trailers equipped
with pneumatic brakes, adjust the parking
brake as follows:
• Shift the lever (1) to the extreme front
(off) position.
• Loosen the locknuts (2) and (6) and
remove the pin (8).
• Turn the lever (4) so that the upper
edge of the groove in the lever (9) aligns
with the upper edge of the groove in the
lever (10).
• If necessary, adjust the length of the
rod (5) with the fork (7), setting the pin (6)
and splint it.
• Turning the adjusting screw (3), adjust
the lever (1) so that the parking brake
be fully engaged on the 3rd or 4th tooth
of the sector A under a force on the
lever of 350 N.
• Tighten the locknuts (2) and (6).
IMPORTANT! With the brake pedals in-
terlocked, unsimultaneity of wheel brak-
ing must not exceed 1 m as measured
by the wheel footprints