MTZ 1220.1, Руководство оператора

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MTZ 1220.1/1220.3 Section H. Adjustments
H11
Adjusting FDA drive switch
Fig. H-6.
Adjusting FDA drive switch
If FDA doesn’t switch on in the automatic
mode, or if it’s necessary to replace the
switch of automatic FDA drive engage-
ment sensor, perform the following adjust-
ing operations:
1. Engage cams ( В ) of half-clutch (2)with
drum cams (1), so that pusher (3) was
extended from guide (6) to maximum
(see Fig. H-6 (I)).
2. Put initial stack of adjusting spacers (4)
(5…6 pieces) under switch end face
(5).
3. Removing spacers one by one, pro-
vide closing of switch contacts (5).
4..Disengage cams ( В ) of half-coupling
(2) from drum clams (1). In this case
pusher (3) should be sunk to maximum,
and switch contacts open (see fig. H-6
(II). Switch (5) is adjusted correctly if in
position (I) its contacts are closed, and in
position (II) are open. To make checking
use control lamp, or an alarm on the con-
trol panel, having pressed upper key sec-
tion if FDA control.
Important! In position (I) (Fig. H-6), di-
mension"
А " from pusher end face (3) to
switch end face (5) should be at least
11.5 mm. Failure to observe this require-
ment may result in switch damage.