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 221 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).

11.

Check transmission

oil temperature gage:

a.

With a jumper wire,

Gage oper- Go to step b.

Replace gage

momentarily ground

ates.

(para 3-73).

circuit 73-TN

terminal of trans-

mission oil

temperature gage.

b.

With a jumper wire,

Gage oper-

Replace send-

Repair circuits

momentarily ground

ates.

ing unit (para

73-TN and/or

circuit 73A-TN

3-103).

73A-TN (para

terminal of trans-

3-127).

mission temperature

sending unit.

12.

Check engine oil

pressure gage:

a.

With a jumper wire,

Gage oper- Go to step b.

Replace gage

momentarily ground

ates.

(para 3-73).

circuit 54B-PP

terminal of engine

oil pressure gage.

b.

With a jumper wire,

Gage oper-

Replace send-

Repair circuits

momentarily ground

ates.

ing unit (para

54B-PP and/or

circuit 54C-PP

3-102).

54C-PP (para

terminal of oil

3-127).

pressure sending

unit.

2-96