Fifth Wheel Operation - Ford F-750 Owner's Manual

• The trailer tongue weight should be 10–15% of the loaded trailer weight.
• If you will be towing a trailer frequently in hot weather, hilly conditions,
at GCW, or any combination of these factors, consider refilling your rear
axle with synthetic gear lube if not already so equipped. Refer to
Lubricant specifications in the Maintenance and Specifications
chapter for the lubricant specification. Remember that regardless of the
rear axle lube used, do not tow a trailer for the first 500 miles (800 km)
of a new vehicle, and that the first 500 miles (800 km) of towing be
done at no faster than 70 mph (112 km/h) with no full throttle starts.
• After you have traveled 50 miles (80 km), thoroughly check your
hitch, electrical connections and trailer wheel lug nuts.
• To aid in engine/transmission cooling and A/C efficiency during hot
weather while stopped in traffic, place the gearshift lever in P (Park) (if
available on your automatic transmission) or N (Neutral) (manual
transmissions and automatic transmissions without a P [Park] position).
• Vehicles with trailers should not be parked on a grade. If you must
park on a grade, place wheel chocks under the trailer's wheels.

FIFTH WHEEL OPERATION

Failure to follow the fifth wheel manufacturer's instructions for
hooking and unhooking as well as sliding the fifth wheel could
result in an accident, personal injury or death.
When the tractor and trailer are parked unattended, the trailer
brake hand control should never be used to apply the brake,
since air may leak from the system, allowing vehicle movement,
resulting in possible property damage, personal injury or death.
Before hook-up, make sure:
• The fifth wheel jaws are fully opened.
• The fifth wheel is fully tilted back to prevent body damage when the
tractor is backed under a trailer.
• The trailer wheels are blocked and the trailer spring brakes are
adjusted and applied. Never chase a trailer.
• The brake hoses and light cords are clear of the fifth wheel.
2007 F-650/750 (f67)
Supplement (supplement)
Canadian_French (fr_can)
Driving
137