TM 9-2320-273-20
SENDING UNITS, SWITCHING DEVICES. AND WINTERIZATION KIT.
5-77. BACKUP SWITCH AND CLUTCH DISENGAGEMENT SENSOR MAINTENANCE (Continued).
LOCATION/lTEM
ACTION
REMARKS
B. INSTALLATION.
5. Backup switch (1).
Coat threads with liquid Tef-
lon. Install and tighten.
6. Wire connector (2).
Connect to backup switch (1).
7. Clutch disengagement
Apply liquid Teflon
sensor (4).
to threads and screw
into valve body.
8. Two wires (5).
Fasten to terminals
with two washers (6)
and screws (7).
9. Cab floor inspection
Replace per paragraph 6-9.
plate.
(M916 thru M920 only).
C. OPERATIONAL CHECK.
10. Engine.
Start up (see TM 9-2320-273-
10).
11. Ratio selector lever (3).
Set to R1 or R2
First mechanic.
Verify that backup lamps
Second mechanic.
come ON.
12. Vehicle.
Test drive. Check operation
Disengagernent sensor
of engine retarder (see
shouId override engine
TM 9-2320-273-10).
retarder when rpm
drops below 700.
5-280
