Engine Starting Interlock
As a precautionary measure against the
engine starting when the range is
switched on, the tractor is equipped with a
special interlock device (Fig. E-15.7). The
interlock consists of a switch (8) located in
the transmission gearbox casing on the
left side, balls (6) and pins (7, 7а).
On switching the range on, the interlock
mechanism opens the switch contacts and
breaks the circuit of the starter intermedi-
ate relay (1).
The shims (9) are provided to adjust the
instant of contact opening (9).
ATTENTION! Before proceeding to
starting the engine, set the transmission
gearbox speed-range change-over lever
to its neutral position!
Fig. E-15.7. Diagram of interlocking the engine starting:
1 – starter; 2 – alternator; 3 – interlock relay; 4 – starter switch; 5 – starter relay; 6 – interlock mechanism
balls; 7 – pin; 7a – lock; 8 – unlock switch; 9 – adjusting shims; 10 – range switch-over dogs
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