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PAGE 42 —DRY PRIME PUMP — OPERATION MANUAL — REV. #3 (10/06/08)
Breakaway Brake System
If the coupler or hitch fails, a properly connected and work-
ing breakaway brake system (Figure 30) will apply the hy-
draulic and/or electric brakes on the trailer. The safety chains
will keep the tow vehicle attached and as the brakes are
applied at the trailer’s axles, the trailer/tow vehicle combina-
tion will come to a controlled stop.
Attaching Safety Chain
Figure 29. Safety Chain Arrangement
for a Bumper Pull Trailer (Ball Hitch)
Figure 30. Breakaway Brake Systems
Breakaway Cable Surge Brake System
For Dry Prime pump trailers equipped with hydraulic surge
brakes, the breakaway brake system includes a brake cable
connected to the tow vehicle on one end and to the emer-
gency brake lever located on the hydraulic actuator on the
other end.
Breakaway Electric Braking System
For Dry Prime pump trailers equipped with an electric brak-
ing system, the electric breakaway brake system includes a
DC power source, a switch with a pull pin, and a breakaway
brake controller. You must periodically charge the battery to
keep the breakaway brake system in working order.
Visually inspect the safety chains and hooks for wear
or damage. Replace worn or damaged safety chains
and hooks before towing.
Attach the safety chains so that they:
A. Cross underneath the coupler. See Figure 29.
B. Loop around a frame member of the tow vehicle
or holes provided in the hitch system (but, DO
NOT attach them to an interchangeable part of
the hitch assembly).
C. Have enough slack to permit tight turns, but not
be close to the road surface, so if the trailer un
couples, the safety chains can hold the tongue
up above the road.
CROSS BOTH
SAFETY CHAINS
IMPORTANT!
TRAILER
TONGUE
SAFETY CHAIN
MASTER LINK
TOW
VEHICLE
Improper rigging of the safety chains can result in loss of
control of the trailer and tow vehicle, leading to death or
serious injury, if the trailer uncouples from the tow vehicle.
• Fasten chains to frame of tow vehicle. DO NOT fasten
chains to any part of the hitch unless the hitch has
holes or loops specifically for that purpose.
•
Cross chains underneath
hitch and coupler with
enough slack to permit turning and to hold tongue up,
if the trailer comes loose.
WARNING - Safety Chains Rigging
Breakaway Switch
Breakaway Lever
Electric Brake Adapter
Hydraulic Actuator
Connect Cable to
Tow Vehicle
Connect Cable to
Tow Vehicle
Pull-Pin
An ineffective breakaway brake system can result in a
runaway trailer, leading to death or serious injury, if the
coupler or ball hitch fails.
Connect the breakaway cable to the tow vehicle; and NOT
to the hitch, ball or support.
Before towing the trailer, test the function of the breakaway
brake system. If the breakaway brake system is not
working, DO NOT tow the trailer. Have it serviced or
repaired.
WARNING - Brakeaway Cable
TRAILER SAFETY GUIDELINES