MTZ 952.2 - Page 254

Appendix
MTZ series 900
254
the relay terminals:
• "Б" or "30" – wire О;
• "К" or "85" – wire K having
turned the key to the “II”
position.
In both cases, the test lamp shall
be lit.
d) check the integrity of the circuit
from the starter solenoid switch
(K7) to the solenoid starter switch:
ATTENTION! Set the gearbox
control lever to the reduction gear
position.
• bridge the terminals "30" and "87"
of the starter solenoid switch К7
using an additional wire. The
starter shall be energized and the
engine shall be started (while
bypassing the starting control and
interlock circuits).
e) Check the operability of the
starter solenoid switch “K7”:
• connect the terminal "86" of the
starter solenoid switch (of the wire
С) to the tractor body (when doing
this, the circuits for interlocking the
starter depending on the position
of the gearbox lever position);
• turn the starter key switch “SA6”
to the “II” position; the starter
solenoid switch shall operate and,
respectively, the diesel shall be
started.
Fig. 9. Checking the operability of the starter switch
(SA6). For the dashboard 826-3805010.
1 – starter switch;
2 – the test lamp.
Fig. 10. Checking the integrity of the circuits of the
starter solenoid switch 738.3747-30:
1 – test lamp.
2 – starter solenoid switch.