Zetor Proxima Series Operator's Manual page 187

Adjustment procedure:
Remove the plastic cover of the lever
1.
of hand control of the PTO clutch.
Adjust the play between the bearing
2.
(11) and the clutch levers (12). Perform
the adjustment with the draw rod (13)
so that the play between the bearing
(11) and the clutch levers (12) might be
4 mm; at the same time it must not
decrease under 2,5 mm.
The air cylinder piston (15) must be in
3.
the basic stop position
adjustment.
Loosen the adjusting screw (4). So the
4.
adjusting nut (3) is released. With the
adjusting nut (3) adjust the play
between the pin (8) and opening of the
draw rod (14) to the value 0,1
During adjusting hold the Bowden
ADJUSTMENT
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cable bolt (6) in the adjusting nut (3) so
that it could not come to its turning
together with the adjusting nut (3) and
so to plying apart of the Bowden cable
(2).
After adjusting secure the adjusting nut
5.
(3) with the adjusting screw (4). Check,
that seating surface of the adjusting nut
(3) is seated at upper surface of the pin
(5).
Check the play between the bearing
6.
during (11) and the clutch levers (12); even-
tually readjust with the draw rod (13).
After adjusting shift the lever (1),
7.
without switching-on of electric current
supply to the electromagnetic valve
(16), by the force that is needed for
+0,2
mm. releasing of the PTO clutch. After
releasing of the lever (1) check
8.
9.
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adjustment according to points 4., 5.
and 6
At shifting of the lever (1) to the
disengaged position, the indicator lamp
at the dashboard must be "on".
When the release levers of the travel
clutch (12) are adjusted properly, the
control force at the lever (1) is max 120
N, at the electromagnetic valve switch
(16) in "on" position and 200 N at the
valve in "of" position. If the force
increases non-proportionally (up to 2
times) it is necessary to adjust the
release levers of the travel clutch.
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