TM 9-4910-387-14-2
6-2.
TROUBLESHOOTING (cont)
F.
WIRES MAY BE OPEN.
1 Connect one multimeter lead to terminal A5 (1) and
connect the other lead to reverse tachometer
reversing relay contact (2).
2 Remove both leads. Connect one multimeter lead to
terminal A4 (3). Connect the other lead in sequence
to forward tachometer reversing relay contact (4) and
to reverse tachometer reversing relay contact (5).
3 Remove both leads. Connect one multimeter lead to
terminal A2 (6). Connect the other lead in sequence
to forward tachometer reversing relay contact (7) and
to reverse tachometer reversing relay contact (8).
NOTE
The following checks are for resistance
.
4 Remove both leads. Connect one multimeter lead to
terminal B5 (9). Connect the other lead in sequence
to reverse tachometer reversing relay coil contact (10)
checking for reading of approximately 200 ohms, and
to reverse starter coil contact (11) checking for
reading of approximately 100 ohms.
6-124
