2 - 1 0 . COUPLING TRAILER TO TOWING VEHICLE (Con't).
Safety chains should be mounted near whichever towing Iunette is used. Perform
steps h and i if safety chains have to be moved.
On M1061A1, shackles are mounted to reach tube with screws and self-locking nuts.
On all other model trailers, shackles are mounted with screw-type pins.
h. Unstow safety chains (11). Remove two self-locking nuts (13) and screws (15), or screw-type pins,
shackles (14), and safety chains,
i. Install two safety chains (11) and shackles (14) with screws (15) and self-locking nuts (13) or screw-type
pins in required location.
Safety chains are crossed under towing Iunette to prevent trailer from fully breaking
away if trailer detaches from towing vehicle. Ensure that there is enough slack in safety
chains to allow trailer to make full turns without being damaged.
j. Cross two safety chains (11) under towing Iunette (6) and hook to towing vehicle. Secure safety chains to
prevent them from dragging.
Ensure that inertia brake actuator emergency brake cable is fully released. If cable is
not fully released, brakes will drag, heat up, and burn out.
Step k applies only if inertia brake system is used. If air/hydraulic brakes are to be used,
proceed to step l.
k. Attach inertia brake actuator emergency brake cable (12) to towing vehicle. Ensure that brakes are fully
released. If brakes are applied, pull emergency brake release cable (7). Proceed to step m.