Safety chains

TM 9-2330-392-14&P Change 2 2-11 2-10 COUPLING TRAILER TO TOWING VEHICLE (Con't). e. Open the pintle hitch (2) by pulling up on the locking latch (3). WARNING All personnel must stand clear of towing vehicle and trailer during coupling operation. Failure to follow this warning may result in serious injury or death to personnel. f. Back the towing vehicle in front of lunette ring (4). g. Use trailer front support leg crank to adjust height of lunette ring. Then place lunette ring on towing vehicle pintle hook (5). h. Close pintle hitch (2). Check that locking latch is locked by pulling up on pintle hitch. Pintle hitch should not come up. Install safety pin (1) into pintle hitch. CAUTION Safety chains must be attached on opposite sides of the trailer tongue or frame and crossed under the tongue when passed forward to the towing vehicle so as to cradle the tongue in the event of a breakaway. Slack should only be sufficient to permit full turns. i. Cross the two trailer safety chains under the drawbar and hook to towing vehicle eyebolts (6). If the safety chains are too long, they can be twisted to be shortened. It is recommended that wire be used across the hook openings to prevent accidental unhooking. CAUTION When operating the crank handle, do not force the front leg beyond the normal operating range, or permanent damage may occur. j. Crank the trailer front support leg up to the stowed position. Then remove locking pin, swing leg up parallel to the ground, and reinsert locking pin in the appropriate holes.