Zetor 3321 SUPER, Operator'S Manual

Page: 162 / 233

161
ADJUSTMENT
SERVICE BRAKE ADJUSTMENT
- Lift rear tractor wheels
- Loosen nuts (6), nuts (2) and nut (4).
- Loosen screw (5).
- Let turn one wheel by means of your
helper. Simultaneously tighten screw
(5) so long the wheel can not be
turned by hand.
- After blocking of wheel loosen the ad-
justing screw (5) by 4/6 of nut surface
i.e. 3/4 turns of screw
- Fix the screw position (5) by locking
nut (4)
- Adjusting process is the same for both
left and right side of tractor
If the asymmetry of brake effect appears
between left and right brake the ad-
justing screw (5) of brake with bigger
brake effect needs to be loosened to ad-
just brake effect of both right and left
wheel. The screw can be loosened ma-
ximally by 1/2 turn.
If the asymmetry of brake effect is not
eliminated after adjusting, the tractor
brakes must be adjusted in the
authorized service.
PARKING BRAKE ADJUSTMENT
- Measure and adjust the distance
between fork (7) and bracket (8) to
value 107
±
2 mm.
- Tighten nut (2) so to be play 0,1 mm
between lower nut (2) and pin (3) i.e.
light contact of nut (2) with pin (3).
- Rise and lower the parking brake lever
(1) several-times. You will eliminate
mutual plays among parts by this way.
- Check the play between nut (2) and
pin (3), settled to 0,1 mm. i.e. light
contact of nut (2) with pin (3).and
eventually adjust it.
- Fix the nut (2) by the second lock nut
(2).
If the asymmetry of brake effect appears
between left and right brake when park-
ing brake applied the upper adjusting nut
(6) of brake with bigger brake effect
needs to be loosened to adjust brake
effect of both right and left wheel. The
nut can be loosened maximally by 1,5
turn.
If the asymmetry of brake effect is not
eliminated after adjusting, the tractor
brakes must be adjusted in the autho-
rized service.
Tighten all locking nuts after brake ad-
justment.
Note:
There are adjusting openings in the
tractor cab floor for making easy the
brake adjustment.
A 185
CLUTCH PEDAL FREE TRAVEL AD-
JUSTMENT
The play between pedal piston rod and
clutch valve piston is not adjusted - this
is adjusted by producer.
The mutual position between piston rod
and piston rod eye (1) is adjusted that
way the piston rod is maximally pulled
from cylinder and the pedal is stopped
on the upper stop screw (2) in the same
time. Subsequently the piston rod is
fixed by nut (3) to piston rod eye. Check
an eventual deformation of dust cap
after adjustment in, case of deformation
correct it by hand.
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