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234 Brakes
Trailer Brake Hand Control
The trailer hand brake control is not a
parking brake valve and must not be
used as one. This brake is not designed
to hold the vehicle stationary. Failure to
follow these instructions can result in the
unintentional movement of the vehicle
and may cause personal injury or death.
The hand control valve for the trailer
brakes engages the trailer brakes indepen-
dently from the vehicle brakes. The valve
can be fully or partially engaged but in any
partial position it will be overridden by a
full application of the foot brake valve.
To supply air to the trailer brakes to slow
the trailer down, pull the valve handle
down. The farther the handle is pulled
down, the more air pressure is applied to
the trailer brakes. Releasing the self-
returning handle releases the trailer brakes.
W5001035
Air Tanks
WARNING
When draining the air tanks, do not look
into the area of the draining air. Dirt or
sludge particles may be in the air stream
and could cause eye injury.
Air tanks should be drained daily. Make
sure the drain cocks close properly after
draining. Empty moisture from air tanks by
pulling the drain valve wire. The tanks
should be checked for condensation fluid
even if an automatic drain valve is installed.
W5001203