TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
8.
OIL TEMPERATURE LIGHT DOES NOT OPERATE PROPERLY (MODEL A ONLY).
INITIAL SETUP
Tools and Special Tools
Equipment Condition
Heater, Gun-Type (500A)
Engine turned off (TM 9-2320-279-10)
Multimeter (ANURM105C)
Parking brake applied (TM 9-2320-279-10)
Tool Kit, General Mechanic's: Automotive
Wheels chocked (TM 9-2320-279-10)
(SC 5180-90-N26)
START
TEST OPTIONS
KNOWN INFO
1.
Oil Temperature Circuit
None.
Does the oil tem-
Test.
perature light come
POSSIBLE PROBLEMS
on when the oil
REASON FOR QUESTION
temperature switch
Oil temperature bulb
To help identify the mode
is bypassed?
faulty.
of failure.
Oil temperature switch
faulty.
Cab control box circuit
board faulty.
Main linking harness
faulty.
Main junction box
harness faulty.
Oil temperature switch
Light comes
harness faulty.
NO
on; go to Step
8.
YES
4--132
4 13
Change 1
