TB-9-2320-279-13-P-4

TRUCK, TRACTOR, LIGHT EQUIPMENT TRANSPORTER (LET), 8X8, M983A2 LET

TECHNICAL BULLETIN; OPERATOR AND FIELD LEVEL

APRIL 2008

TB-9-2320-279-13-P-4 - Page 263 of 744

FIELD MAINTENANCE

FIFTH WHEEL WILL NOT UNLOCK WHEN DISCONNECTING TRAILER

INITIAL SETUP:

Tools and Special Tools

Tool Kit, General Mechanic's: Automotive (WP

0081, Table 2, Item 5)

Personnel Required

Wheeled Vehicle Mechanic 63B (2)

Equipment Condition

Engine OFF (refer to TM 9-2320-279-10).

Parking brake applied (refer to TM 9-2320-279-10).

Wheels chocked (refer to TM 9-2320-279-10).

TROUBLESHOOTING PROCEDURE

FIFTH WHEEL WILL NOT UNLOCK WHEN DISCONNECTING TRAILER

TEST 1 - Is fifth wheel properly lubricated and free from debris?

1. Check if fifth wheel is free from debris.

FIFTH WHEEL

T

Y

PICAL

TRAILER

Figure 1.

2. If fifth wheel is not free from debris, clear debris from fifth wheel.

TB 9-2320-279-13&P-4

0027

0027-1