TM9-2330-368-14 & P
b. Intervehicular Air Hoses. Air for
operation of the HEMAT brakes is provided
from the towing vehicle through intervehicular air
hoses (3). One hose is for service brake operation;
the other hose is for emergency operation. Both
secure connection to the towing vehicle. Rubber
straps (5) are provided to connect the air hoses to
the tongue and prevent dragging.
WARNING
Do not actuate the trailer parking brake
control unless the HEMAT is on level
terrain. Without brakes the HEMAT
may roll and move out of control causing
possible injury or damage.
c. Trailer Parking Brake Control. Pushing in
the brake control knob (6) permits the crew to
unlock the HE MAT brakes when the HE MAT is
disconnected from the towing vehicle. If there is
not enough air in the HE MAT air tanks, the
knob will pop out to the normal position and the
parking brakes will remain locked. A guard (7)
prevents accidental valve actuation.
NOTE
The HEMAT brakes can also be released
mechanically by caging the brake cham-
2-3. COUPLER AND SAFETY CHAINS
a. Coupler ( 1). The coupler is a lunette type
used to connect the HEMAT to the towing vehicle
pintle during transporting. The coupler is bolted to
the trailer frame. Height can be adjusted by re-
mounting the coupler in a series of holes in the
trailer tongue. The coupler should be mounted in
the position that will cause the HEMAT to ride
closest to level.
b. Safety Chains (2). Two safety chains are
provided on the forward end of the frame. Their
purpose is to prevent a breakaway if the pintle-
coupler connections should fail. The safety chains
are connected to towing vehicle after the coupler
is connected to towing pintle. The chains are
hooked around the trailer tongue when not in use.
2-3