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OPERATING INSTRUCTIONS
Towing Vehicle and Trailer
Hook-Up and Check-Out
Failure to properly set and check parking brake,
and chock wheels when parking and during
storage, could allow movement of the truck/trailer
rig resulting in serious personal injury, death, or
damage to property in its path.
1.
Assure landing gear is raised up all the way.
2. Attach safety chains from the trailer to the towing
vehicle.
3. Check your maintenance schedule and be sure
everything is up-to-date.
4. Set parking brake. If brakes are not properly set, the
truck/trailer may roll when removing wheel chocks.
Carefully remove all wheel chocks.
Towing the Trailer
Always check behind and under the truck and
trailer for persons or objects before moving.
Failure to check can lead to serious personal
injury or death to others, or damage to property.
1. Driving the towing vehicle with the trailer coupled
behind requires constant attention to the overall
length of the combination. Turning, passing,
acceleration, braking, stopping, and back-up require
special attention to the "hinged-in-the-middle"
configuration of the trailer. When executing steep
grades or turning tight curves, the trailer must not be
allowed to push the towing vehicle, or jackknifing the
trailer with the towing vehicle may result. Application
of the trailer brakes to keep the trailer in tow will help
prevent this pushing. Braking should begin before
descending a hill or attempting a curve, to assure
control.
3-4
WARNING
DANGER
2. Make a moving test of the trailer brakes at low, and
medium speeds before traveling at highway speed.
a. The Anti-Lock Brake System (ABS) warning
lamp mounted at left rear side of the trailer
should come on when power is supplied to the
ABS by turning the tractor keyswitch on. The
warning lamp should go off once the trailer
exceeds 4 mph. Once the vehicle speed exceeds
4 mph, the light should remain off unless a fault
occurs or the keyswitch is turned off, then on
again.
If a fault exists in the trailer ABS, normal braking
will occur, but wheels may lock. Service the ABS
as soon as possible.
b. If the warning lamp does not go off, a fault exists
in the trailer ABS. If a fault exists, service using
the anti-lock brake system section or the
troubleshooting section of this manual.
3. Monitor the air pressure gauge on the dash of the
towing vehicle. Pressure should not fall below 105 psi
at any time.
4. The trailer wheels track to the inside of the towing
vehicle during turns. Thus, turning corners requires a
wide swing to prevent "curb hopping", and to allow
the trailer to clear any obstacle on the inside of the
corner.
5. To stop, use a gradual and smooth application of
brakes.
6. Backing should be done with care. Tail overhang,
trailer length, and allowable space must be taken into
consideration.
7. The load on the trailer should be positioned so a
minimum of 8% of the total weight and a maximum of
30% of the total weight is on the hitch.
CAUTION
F-563-0610 Edition
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