Coupling Semitrailer To Towing Vehicle

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Section III. OPERATION UNDER USUAL CONDITIONS

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TM-9-2330-380-14-P Semitrailer Van: Electronic Tactical 12-Ton 4-Wheel XM1063 (NSN 2330-01-224-9244) and M129A4 (NSN 2330-01-372-5642) Manual

Coupling Semitrailer To Towing Vehicle (cont'd)

TM 9-2330-380-14&P

2-8. Coupling Semitrailer To Towing Vehicle

WARNING

Be sure all personnel stand clear of towing vehicle and semitrailer during coupling and uncoupling

operations or serious injury may occur.

Ensure towing vehicle kingpin wedges are in place during operations on other than paved roads.

Failure to follow this warning could result in serious injury or death to personnel.

a. Slowly back towing vehicle into position. Be

sure kingpin (1) is in line with fifth wheel coupler

jaws (3).

b. Before kingpin plate (2) starts to ride the

approach ramps (4), check that kingpin plate (2)

is above the approach ramps (4).

WARNING

To avoid injury to personnel or damage

to equipment, a ground guide must

assist in raising and lowering landing

gear legs

c. Adjust height as needed by using landing gear.

Make sure coupler jaws (3) are open.

d. Slowly back towing vehicle until coupler jaws

(3) engage kingpin.

CAUTION

Visually check coupling. You should not be able to see daylight between fifth wheel (5) and kingpin

plate (2). If light shows, lower kingpin plate, using landing gear. If coupling is not done properly,

equipment damage may result.

e . Make sure coupling is secure by inching forward. Locked, rock back and forth slowly until kingpin (1) is

locked in fifth wheel.