TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
8.
OIL TEMPERATURE LIGHT DOES NOT OPERATE PROPERLY (MODEL A ONLY)
(continued).
4.
KNOWN INFO
TEST OPTIONS
Voltage Test.
Oil temperature light
Are 2228 volts mea-
never comes on.
sured at cab control
REASON FOR QUESTION
Oil temperature bulb OK.
box connector (J2),
Oil temperature switch
position N?
The oil pressure switch
OK.
circuit receives its power
source from the cab
POSSIBLE PROBLEMS
control box. The oil
Cab control box circuit
temperature light will not
board faulty.
operate if there is no
Linking harness faulty.
voltage supply at
Main junction box
position N.
harness faulty.
Oil temperature switch
harness faulty.
Repair cab control
NO
box (para 4-71).
YES
4-138
Change 1
