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 219 of 926
TM 9-2320-283-20-1
TROUBLESHOOTING.
2-11.
TROUBLESHOOTING PROCEDURES (Continued).
MALFUNCTION
INSTRUCTION
INDICATION
YES
NO
31.
INSTRUMENT PANEL GAGES NOT WORKING (Continued).
9.
Check fuel gage:
a.
With a jumper wire,
Gage oper-
Go to step b.
Replace gage
momentarily ground
ates.
(para 3-73).
circuit 74-GY
terminal of fuel
gage.
b.
With a jumper wire,
Gage oper-
Replace sending
Repair circuit
momentarily ground
ates.
unit (para
74-GY and/or
circuit 74A-GY
3-105).
74A-GY (para
terminal of fuel
3-127).
level sending unit.
10.
Check voltmeter:
a.
With a jumper wire,
Gage oper-
Go to step b.
Replace gage
momentarily ground
ates.
(para 3-73).
circuit 98E-BK
terminal of volt-
meter.
b.
With a jumper wire,
Gage oper-
Go to step c.
Repair circuit
momentarily ground
ates.
98E-BK (para
circuit 98E-BK
3-127).
terminal of start
switch.
c.
With a jumper wire,
Gage oper-
Tighten and/
Repair circuit
momentarily ground
ates.
or clean cir-
98F-BK (para
circuit 98F-BK at
cuit 98F-BK
3-127).
instrument panel
connection to
ground point.
instrument
panel.
2-94
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