TM-9-2320-341-10

TRUCK, TRACTOR, LIGHT EQUIPMENT TRANSPORTER (LET), 8X8 M983A4 LET

TECHNICAL MANUAL; OPERATOR'S MANUAL

OCTOBER 2008

TM-9-2320-341-10 - Page 271 of 962

•

Both fifth wheel lockout assemblies are rotated the same way (driver

side shown).

3.

Rotate fifth wheel lockout assembly:

a.

Loosen four screws (1).

NOTE

•

Driver side lockring rotates toward the rear of vehicle.

•

Passenger side lockring rotates toward the front of vehicle.

b.

Rotate lockring (4) so desired surface area (see table 1 above) is oriented directly

under engagement area (6) of fifth wheel (5).

c.

Tighten four screws (1).

d.

Repeat Step (3) for opposite side of fifth wheel (5).

NOTE

Fifth wheel has two lock release handles.

4.

Pull fifth wheel secondary lock release handle (7) completely out as far as it will go.

5.

Pull out fifth wheel primary lock release handle (8) and hook it in out position.

6.

Push down rear of fifth wheel (5) until it rests on stop (9) below guide ramps (10).

CAUTION

•

Ensure there is a generous amount of grease on fifth wheel, ramps,

kingpin, and steering wedge. Failure to comply may result in damage

to equipment.

•

Tractor vehicle and semitrailer coupling should be performed with the

tractor vehicle and semitrailer in a straight line. If wedge of trailer is

not aligned with tractor vehicle fifth wheel, adjust either tractor

vehicle, trailer, or both to align them. Failure to comply may result in

damage to equipment.

7.

Prepare semitrailer for coupling (refer to TM 5-2330-378-14&P). (WP 0146)

8.

Slowly back tractor vehicle (WP 0051) to within 3 ft. (.92 m) of semitrailer. Stop tractor

vehicle.

TM 9-2320-341-10

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