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 201 of 926
TM 9-2320-283-20-1
TROUBLESHOOTING.
2-11.
TROUBLESHOOTING PROCEDURES (Continued).
MALFUNCTION
INSTRUCTION
INDICATION
YES
NO
27.
LOW ENGINE OIL INDICATOR NOT WORKING.
1
Remove circuit breaker
bracket far enough to
access circuit breaker
CB-2 (para 3-114), and
go to step 2
NOTE
Ignition switch must be in ON position and battery power connected when doing the following checks.
2
Check for voltage at
12-volts dc
Install cir-
Reset circuit
circuit 44-LB terminal
nominal
cuit breaker
breaker CB-2
of circuit breaker
bracket (para
and/or trouble-
CB-2
3-114) and
shoot CB-2 cir-
‘
go to step 3
cuit (Refer
to malfunction
33).
3
Check for voltage at
12-volts dc
Go to step 4
Repair circuit
circuit 44-LB terminal
nominal
44-LB (para
of engine temperature
3-127).
gage.
4
Check for voltage at
12-volts dc
Go to step 5
Repair circuit
circuit 44A-LB ter-
nominal
44A-LB (para
minal of fuel gage
3-127).
5
Check for voltage at
12-volts dc
Go to step 6
Repair circuit
circuit 44B-LB ter-
nominal
448-LB (para
minal of voltmeter
3-127).
6
Check for voltage at
12-volts dc
Go to step 7
Repair circuit
circuit 44C-LB
nominal
44C-LB (para
terminal of transmis-
3-127).
sion oil temperature
gage.
7
Check for voltage at
12-volts dc
Go to step 8
Repair circuit
circuit 44K-LB ter-
nominal
44H-LB and/or
minal of low oil
44K-LB (para
pressure indicator
3-127).
lamp socket.
2-76
Back to Top
