TM-9-2320-283-20-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3
DECEMBER 1983
TM-9-2320-283-20-1 - Page 171 of 926
TM 9-2320-283-20-1
TROUBLESHOOTING.
2-11.
TROUBLESHOOTING PROCEDURES (Continued).
MALFUNCTION
INSTRUCTION
INDICATION
YES
NO
17 ETHER SOLENOID FAILS TO OPERATE WHEN ETHER START SWITCH IS PUSHED
(Continued).
6
Disconnect circuit
51A-DG from 51B-DG at
connector, and go to
step 7.
7
Check for voltage at
12-volts dc
Connect circuit
Repair circuit
circuit 51A-DG (pin 6
nominal
51A-DG to
51A-DG (para
of connector)
51B-DG, and go
3-127).
to step 8.
8
Have assistant operate
12-volts dc
Go to step 9
Repair circuit
ether start switch
nominal
51B-DG (para
while checking for
3-127).
voltage at circuit
51B-DG of solenoid
valve.
NOTE
-With positive lead on circuit 51B-DG
(or other suitable 12-volt source),
check ground with negative lead when
doing the following checks.
-Engine coolant must be below 70°F.
9
Check for voltage at
12-volts dc
Go to step 10
Tighten and/or
circuit 98M-BK of
nominal
clean connection.
engine block.
Connect
circuit 51B-DG
to solenoid
valve.
10 Check for voltage at
12-volts dc
Go to step 11
Repair wire
circuit 98M-BK of
nominal
98M-BK (para
thermostat
3-127).
Connect
circuit 51B-DG
to solenoid
valve.
2-46
Back to Top
