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STARTING AND DRIVING
FIFTH WHEEL INSTRUCTIONS
DANGER
Always have all fifth wheel maintenance
and repairs done by a qualified technician.
An incorrect repair can cause the trailer to
separate from the tractor causing an
accident with serious personal injury or
death.
Fifth Wheel General Information
Things to think about with trailer hook-
up:
• Always chock the trailer wheels.
• Grease the plate unless it is a low
lube or no lube top plate.
• Verify visually that plungers are
locked on slider.
• Verify 5th wheel is in unlatched
position before coupling to trailer.
• Verify visually that coupling has
occurred.
• Check for slack between the fifth
wheel and the trailer kingpin.
• Check the load distribution between
axles.
Follow the instructions on the advisory
labels attached to the various
manufacturers' fifth wheels.
Please refer to manufacture's website
for additional information.
DANGER
Always keep the fifth wheel plate well
lubricated to prevent binding between the
tractor and trailer. A binding fifth wheel
could cause erratic steering and loss of
vehicle control that may result in serious
personal injury or death.
DANGER
To ensure a positive hook-up or coupling,
these procedures should be followed in
every case. A trailer that is not connected
correctly may disconnect from the tractor
while in motion, resulting in an accident,
personal injury or death.
CAUTION
Attempting to couple with the trailer at an
improper height could result in a false or
improper couple and cause damage to the
tractor, fifth wheel and trailer.
DANGER
It is important that the operating
procedures contained in this manual are
fully understood and closely followed.
Failure to properly couple the tractor and
trailer can result in their separation,
causing death and property damage.
Proper pick-up and coupling to a trailer is
a serious matter. A trailer that becomes
disconnected while in motion is extremely
dangerous to other traffic and may result
in death or severe personal injury. To
ensure a positive hook-up or coupling, the
procedures should be followed in every
case.
Chock the trailer wheels. Use two
chocks (both on the front and rear of the
wheel) on both sides of the trailer.
Back up close to the trailer, centering
the kingpin on the throat of the fifth
wheel, and STOP.
Fifth Wheel Trailer Height
Check to see that the trailer is at the
proper height for coupling. The leading
edge of the trailer plate should initially
contact the fifth wheel top plate surface
about 200 mm (8 in.) behind the pivot
point as the tractor backs under the
trailer. Raise or lower the trailer landing
gear as required to obtain this position.
Back under the trailer, keep the trailer
kingpin centered in the throat of the fifth
wheel.
149
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