Section 3 – Coupling To The Tow Vehicle
R4 3/30/2017
Page 29
worn, damaged or missing parts before towing
trailer.
•
Connect the pullpin lanyard to the tow vehicle
so that the pullpin will be pulled out before all
of the slack in the safety chains is taken up (see
Breakaway Brake Connection figure 3-6). Do
not
connect the pullpin lanyard to a safety
chain or to the hitch ball or hitch ball assembly.
This would keep the breakaway brake system
from operating when it is needed.
•
To test the breakaway brake battery, remove the
pullpin from the switch and attempt to pull the
trailer forward. You should feel the trailer
resisting being towed, but the wheels will not
necessarily be locked. If the brakes do not
function, do not tow the trailer until brakes, or
battery, are repaired.
•
Immediately replace the pullpin. The
breakaway brake system battery discharges
rapidly when the pullpin is removed.
^ WARNING
An ineffective breakaway brake system can
result in a runaway trailer, leading to death
or serious injury if the coupler or ball hitch
fails.
Test the function of the breakaway brake
system before towing the trailer. Do not
tow the trailer if the breakaway brake
system is not working; have it serviced or
repaired.
Connect the breakaway lanyard to the tow
vehicle -
NOT to the safety chain; and
NOT to the hitch, ball or support.
Do
not
tow the trailer with the breakaway brake
system ON because the brakes will overheat which
can result in permanent brake failure.
^ WARNING
Failure to replace the pullpin can result in
ineffective brakes, leading to loss of
control, serious injury or death.
If you do not use your trailer for three or more
months, or during winter months:
•
Store the battery indoors; and
•
Charge the battery every three months.
Replace the breakaway brake battery according to
the intervals specified by the battery manufacturer.
3.2.5 Connect the Electrical Cables
Connect the trailer lights to the tow vehicle's
electrical system using the electrical connectors.
•
Check all lights for proper operation.
•
Clearance and Running Lights (Turn on
tow vehicle headlights).
•
Brake Lights (Step on tow vehicle brake
pedal).
•
Turn Signals (Operate tow vehicle
directional signal lever).
•
Check electric brakes for proper operation
using brake controller mounted in the cab.
If your trailer has electric brakes, your tow vehicle
will have an electric brake controller that sends
power to the trailer brakes. Before towing the
trailer on the road, you must operate the brake
controller while trying to pull the trailer in order to
confirm that the electric brakes operate. While
towing the trailer at less than 5 m.p.h., manually
operate the electric brake controller in the tow
vehicle cab. You should feel the operation of the
trailer brakes.
^ WARNING
Failure to connect the tow vehicle lighting
and braking to the trailer will result in
inoperable lights and brakes, and can lead
to collision.
Check that all the trailer lights and brakes
work before each tow.
3.2.6 Uncoupling the Trailer
Follow these steps to uncouple your trailer from the
tow vehicle:
•
Block trailer tires to prevent the trailer from
rolling, before jacking the trailer up.
•
Disconnect the electrical connector.
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