Specifications

L.5 Trailer
Coupler, Safety
Chains and
Hydraulic Brake
Actuator
The trailer coupler attaches to the ball of the tow vehicle. The coupler
engages the ball and provides a positive mechanical lock between the trailer
and the tow vehicle. The coupler must
be a 2 5/16" Class V rating of at
least 10,000 lbs. It shall be stamped and clearly
legible.
Two safety chains attached to the trailer provide trailer retention to the
vehicle should the coupler disengage from the ball. The safety chains must
be ½" galvanized steel. One end of the safety chains are bolted directly to
the trailer with the other attached to the tow vehicle’s hitch with ½"
galvanized screw pin shackles that are rated at 2 tons.
The breakaway lever actuating chain is attached to the towing vehicle’s
hitch during trailering operations. Should the trailer break away from the
towing vehicle, the breakaway lever actuating chain will be pulled forward,
which will automatically apply the trailer’s brakes. The breakaway lever
actuator safety chain must
be attached to the hitch using ¼" shackle and an
additional ½" shackle. The breakaway lever actuating chain is a standard
length and should not be altered in any way. (Figure 3-74)
Figure 3-74
Trailer Coupling Assembly