TM 9-4910-387-14-2
6-2.
TROUBLESHOOTING (cont)
B.
FORWARD
TACHOMETER
REVERSING
RELAY
MAY
BE
A.
FORWARD-OFF-REVERSE SWITCH MAY BE DEFECTIVE.
DEFECTIVE.
1 Refer to page 6-14 for troubleshooting
NOTE
procedures.
The following check is for resistance.
2 If TACHOMETER indicator assembly
1 Connect one multimeter lead to forward
does not function, proceed to step B.
tachometer relay contact (1) and
connect the other lead to forward
tachometer
relay
contact
(2).
2 Check for approximate resistance reading of 100 ohms.
If
resistance is not present, replace forward tachometer reversing relay
(3) (p 6-219).
3 Check if forward tachometer reversing relay contacts (4 and 5) are
pitted or welded together. If damaged, replace forward tachometer
reversing relay (p 6-219).
4 If TACHOMETER indicator assembly does not function, proceed to
step C.
6-114
