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 250 of 926

TM 9-2320-283-20-1

TROUBLESHOOTING.

2-11.

TROUBLESHOOTING PROCEDURES (Continued).

MALFUNCTION

INSTRUCTION

INDICATION

YES

NO

37.

ETHER LAMP AND/OR CLEARANCE LAMP NOT WORKING.

NOTE

•

Headlamp

rheostat

switch

must

be rotated fully

clockwise when doing the following checks.

•

Do steps 1 thru 6 only if clearance lamp is not working

or if both lamps are not working.

•

Do steps 3 thru 5 and step 7 only if ether lamp is not

working.

1.

Check for voltage at

12-volts dc

Go to step 2.

Refer to mal-

circuit 29-BR terminal

nominal.

function 44.

Of headlamp switch.

TA 236869

2-125