Belarus 1221.2, Руководство оператора

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BELARUS-1221. 2/1221В.2/1221.3 Adjustments
166
FDA drive switch adjustment
Fig. К - 9а
If FDA can not be engaged in an automat-
ic mode , or if it is necessary to change a
switch of FDA driving gear sensor , do the
following operations:
1. Semi-coupling (2) cams (B) are to be
engaged with the cams of a drum (1) so
as to get a pusher (3) moved maximum
forward from the guide (6) (see Picture
Ж -9 а (I)).
2. Place an initial set of adjustable
gaskets (4) in number of 5…6 units un-
der the switch flank (5).
3. Removing the gaskets one by one , se-
cure contacts closure of the switch (5).
4. Disengage the semi-coupling (2) cams
(B) with the cams of the drum (1). At
the same time the pusher (3) should be
recessed to the maximum , and contacts
of the switch should be opened (see
Picture Ж -9 а (II)). The switch (5) is ad-
justed properly if its contacts are closed
in position I and opened in position II.
Do checkup using an indicator lamp, or
a signaling device on the control board
by pushing a top part of the FDA control
button.
Important! The distance “ А ” (Picture Ж -
9 а ) from of the pusher end (3) to the
switch flank (5) is to be not less than
11,5 mm. Non-observance if this re-
quirement can lead to the switch dam-
age.