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 264 of 744

3. Check if fifth wheel is properly lubricated.

4. If fifth wheel is not properly lubricated, lubricate fifth wheel with GAA. (WP 0038)

CONDITION/INDICATION

Is fifth wheel properly lubricated and free from debris?

DECISION

No - Test 4 - Does fifth wheel unlock when disconnecting trailer?

Yes - Test 2 - Do fifth wheel primary and secondary release handles operate without binding?

TEST 2 - Do fifth wheel primary and secondary release handles operate without binding?

CAUTION

Ensure kingpin jaws stay open when primary lock release handle is in locked position.

Failure to comply may result in damage to fifth wheel.

1. Operate fifth wheel primary and secondary release handles. Check if release handles operate over their full

range of motion without binding. (WP 0013)

FIFTH

WHEEL

FIFTH WHEEL

SECONDAR

Y

LOCK

RELEASE HANDLE

T

Y

PICAL

TRAILER

FIFTH WHEEL

PRIMAR

Y

LOCK

RELEASE HANDLE

Figure 2.

CONDITION/INDICATION

Do fifth wheel primary and secondary release handles operate without binding?

DECISION

No - Replace fifth wheel. (WP 0052)Test 4 - Does fifth wheel unlock when disconnecting trailer?

Yes - Test 3 - Does fifth wheel unlock when disconnecting trailer?

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

0027

0027-2