42
Driving & Safety
SECTION THREE
Front Wheels:
Slide the front wheel over the studs . Use caution to avoid
damaging stud threads . Snug the nuts in correct pattern .
Do not fully torque until all nuts have been seated .
Dual Rear Wheels:
Slide the inner dual wheel over the studs . Use caution to
avoid damaging threads . Align the hand-holds for valve
stem access and slide the outer dual wheel over the
studs again using caution to avoid damaging threads .
• Before installing the wheels, lubricate the hub pilot
pads with a drop of oil to prevent galling . Do not
lubricate any other wheel or hub surface .
• For a hub with intermittent pilot pads, position a
pad at the twelve o’clock position to center the
wheel and reduce runout .
• See the Chassis OEM Manual for lugnut torque
specification .
Snug nuts in sequence but do not tighten them fully
until all are seated . Tighten the nuts in the pattern
indicated in the Chassis OEM manual . Hub mount
wheels use two piece flange cap nuts for both front and
rear applications . No inner cap nuts are required .
Torque the Nuts Properly:
• Tighten the wheel nuts to the recommended lug
nut torque . Do not over tighten .
• Maintain the nut torque at the recommended level
through planned periodic checks or at 10,000 mile
intervals, whichever comes first .
• If air wrenches are used, they must be periodically
calibrated for the proper torque output . Use a
torque wrench to check air wrench output and
adjust line pressure for the correct torque .
WEIGHING THE MOTORHOME
Proper weight distribution, load management and
operating within established limitations will aid in
safe and enjoyable travel . The information in this
section outlines guidelines and provides information
on the proper techniques for weighing to accurately
determine total weight, axle weights, balance and tire
inflation pressure . According to the National Highway
Traffic Safety Administration, most tire failures are a
result of under-inflated tires .
Load management, weight distribution and properly
inflated tires are the responsibility of the operator .
The motorhome must be weighed in a loaded, ready
to travel condition to correctly determine how much
weight is placed on each wheel position, then added to
determine the overall weight upon a single axle .
This may require one or more adjustments and the
motorhome subsequently weighed again to verify proper
and adequate adjustments . The first thing to determine is
the maximum allowable weight of the motorhome . This
information is found on the Federal Certification Label
located adjacent to the driver seat under Gross Vehicle
Weight Rating . This is the maximum allowable gross
weight and cannot be exceeded .
CAUTION:
Dual wheels require tightening the lugnuts to the
specified torque at 100 miles and again at 500
miles of initial operation . Preform same procedure
any time a wheel has been removed .
020369
OCCC Tongue
Weight Water GAWR
Gross Vehicle
Weight Rating
CAUTION:
See the Ford OEM chassis manual for proper
tightening pattern . Loosen and tighten lug nuts
in pattern indicated . Sequence tighten nuts to 50
ft . lbs, then tighten in pattern to manufacturer’s
recommended
torque
specification .
Over-
tightening can cause distortion .
WARNING:
Never use wheels or lug nuts different than the
original equipment as this could damage the wheel
or the mounting system . Damage to the wheel or
mounting system could cause a wheel to come off
while the motorhome is in motion .
Summary of Contents for Class A Gas 2020
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