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 125 of 522

TM 9-2510-247-13&P

0024 00

TABLE 1.

OPERATOR TROUBLESHOOTING

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

KINGPIN

KINGPIN FAILS TO LOCK IN FIFTH WHEEL

Step 1.

Check kingpin size and location for compatibility with prime mover fifth wheel.

Replace kingpin in accordance with WP 0034.

Step 2.

Check kingpin for damage.

Notify Unit Maintenance if kingpin is damaged.

ELECTRICAL SYSTEM

1. ALL LIGHTS INOPERABLE

Step 1.

Check that all electrical switches are set in the correct position (WP 0015).

Step 2.

Check electrical connections at cable receptacles.

Reconnect cables if not properly connected.

Step 3.

Check connectors for dirty, corroded, or damaged pins.

Clean in accordance with procedures in WP 0035.

Notify Unit Maintenance if pins are damaged.

Step 4.

Check voltmeter on control box for reading of 12 volt dc.

Notify Unit Maintenance if voltage reading is below 12 volts dc.

0024 00-1