TM-9-2320-209-20-2-1

2½-TON, 6X6, M44A1 AND M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; TROUBLESHOOTING; ORGANIZATIONAL LEVEL; VOLUME 2 OF 3; PART 1 OF 2

MAY 1981

TM-9-2320-209-20-2-1 - Page 309 of 645

TM 9-2320- 209-20-2-1

Symptom

6

ONE HEADLIGHT DOES NOT LIGHT, OTHER HEADLIGHT LIGHTS

1

NOTE

When checking voltage +24 volts DC

means a range of +23 volts DC to +26

volts DC

I

●

Park truck

I

●

Refer to TM 9-2320-209-10

●

Check for +24 volts DC at low beam

input of bad headlight

●

●

●

●

Take off leads 17 (high beam), 18

(low beam), and 91 (ground) from

headlight housing

Set multimeter to measure +24 volts

DC. Refer to test equipment

procedures index

Set light switch main lever to

SERVICE DRIVE

Put multimeter - lead on lead 91

contact and mu Itimeter + lead on

lead 18 contact. Read mu Itimeter.

Multimeter should read +24 volts

DC. If not, push dimmer switch

and read meter again

Did multimeter measure +24 volts DC?

GO

RIGHT

HEADLIGHT

HOUSING

\

/l

FRONT

HARNESS

-4

114274

Figure 25-6 (Sheet 1 of 4)

25-67