Technical Specifications - Ford F-Series Super Duty Class A 2015 Owner's Manual

Motorhome and commercial chassis
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TECHNICAL SPECIFICATIONS

Wheel Lug Nut Torque Specifications
When a wheel is installed, always remove any corrosion, dirt or foreign materials
present on the mounting surfaces of the wheel or the surface of the wheel hub,
brake drum or brake disc that contacts the wheel. Make sure that any fasteners
that attach the rotor to the hub are secured so they do not interfere with the mounting
surfaces of the wheel. Installing wheels without correct metal-to-metal contact at the
wheel mounting surfaces can cause the wheel nuts to loosen and the wheel to come off
while the vehicle is in motion, resulting in loss of control.
Bolt size
M14 x 1.5
(19.5 inch wheels)
M22 x 1.5
(22.5 inch wheels)
*
Torque specifications are for nut and bolt threads free of dirt and rust. Use only Ford
recommended replacement fasteners.
On vehicles equipped with dual rear wheels, retighten the wheel lug nuts to the specified
torque at 100 miles (160 kilometers), and again at 500 miles (800 kilometers) of new
vehicle operation and after any wheel disturbance (such as tire rotation, changing a flat
tire, wheel removal).
On all two-piece flat wheel nuts, apply one drop of motor oil between the flat washer
and the nut. Do not apply motor oil to the wheel nut threads or the wheel stud threads.
E161443
Motorhome (), enUSA
Wheels and Tires
WARNING
109
*
Ib-ft (Nm)
150 (200)
450 (610)

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