TM-9-2510-247-13-P

FIFTH WHEEL TOWING DEVICE MODEL 250M

TECHNICAL MANUAL; OPERATOR’S, UNIT, AND DIRECT SUPPORT MAINTENANCE MANUAL, REPAIR PARTS AND SPECIAL TOOLS LIST

JULY 2004

TM-9-2510-247-13-P - Page 140 of 522

TM 9-2510-247-13&P

00027 00

UNIT TROUBLESHOOTING - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

ELECTRICAL SYSTEM - Continued

5.

ALL LIGHTS ARE INOPERABLE

Step 1.

Is there minimum 12VDC on batteries?

If no, go to step 2.

If yes, go to step 3.

Step 2.

Is NATO slave cable connected?

If no, install NATO cable in receptacle on prime mover and receptacle on 12/24

volt junction box.

If yes, go to step 3.

Step 3.

Are there any broken or frayed wires?

If no, go to step 4.

If yes, repair or replace wires as necessary (WP 0051).

Step 4.

Are all bulbs working properly?

If no, replace bulbs (WP 0047, WP 0048, or WP 0049).

If yes, replace light assemblies (WP 0047, WP 0048, or WP 0049).

6.

WORK LIGHT INOPERABLE

Step 1.

Is WORK LIGHT switch ON?

If no, put WORKLIGHT switch in ON position.

If yes, go to step 2.

Step 2.

Is there minimum12VDC on batteries?

If no, go to step 3.

If yes, go to step 4.

Step 3.

Is NATO slave cable connected?

If no, install NATO cable in receptacle on prime mover and receptacle on 12/24

volt junction box.

If yes, go to step 4.

0027 00-4