11-02-2
Wheels and Tires—Drop-Center Rim
11-02-2
wheel stud nuts. Tighten the stud nuts
enough to hold the wheel firmly in
place. Always tighten alternate nuts
to draw the wheel evenly against the
huh and drum (or hub and rotor).
On dual wheels, except E-350,
F-350, P-350 and P-400 be sure to
back off the outer nut before
tightening the inner nut. Then tighten
the outer nut. E-350, F-350, P-350
and P-400 dual wheels have mounting
bolt holes which are alternately flared
inward and outward. These surfaces
must be mated when the wheels are
mounted. Fig. 2 illustrates the dual
wheel radial alignment locating pin
used on E-350 and F-350.
ALIGN DUAL WHEELS
ON LOCATING PIN
F 1829-A
FIG.
2 Dual Wheel Radial Alignment
to Hub (E-350,
F-350)
3.
Lower the vehicle to the floor, and
tighten the wheel stud nuts to the
specified torque. On a new vehicle,
and each time a wheel and tire is
installed, the wheel nuts should be
torqued to specification and
rechecked at 500 miles.
Medium Vehicles
Removal
1.
Loosen but do not remove the wheel
stud nuts.
2.
Raise the vehicle until the wheel and
tire clear the floor.
3.
Remove the wheel stud nuts and the
wheel and tire from the hub and
drum.
Installation
1.
Clean all dirt from the hub and drum.
The replacement wheel and tire must
be clean.
2.
Position the wheel and tire on the hub
and drum, and install the wheel stud
nuts.
Tighten the stud nuts enough to
hold the wheel firmly in place.
Always tighten alternate nuts to draw
the wheel evenly against the hub and
drum.
On dual wheels, be sure to back off
the outer nut before tightening the
inner nut. Then tighten the outer nut.
3.
Lower vehicle to the floor, and
tighten the wheel stud nuts to the
specified torque. On a new vehicle,
and each time a wheel and tire is
installed, the wheel nuts should be
checked for tightness.
TIRE REPLACEMENT
PRECAUTIONS
The tire must be completely deflated
before removal, and the bead must not be
damaged by a tire iron.
After installation, a tube tire should
be inflated to recommended pressure,
deflated, and then inflated again to insure
that the tube is not folded inside the tire.
Be sure the tube flap is properly
positioned before inflating the tire. On
F-100, -250, -350, Econoline, and Bronco
series,
it is important that each front and
rear tire and wheel be balanced.
When installing tires on light trucks,
thoroughly lubricate the tire beads.
Inflate the tire until the bead seats
against the rim of the wheel, then deflate
to the specified pressure. Follow the
instructions supplied with the Rotunda
(KKRE-888'6r equivalent) tire changer.
Refer to Part 11-01 for safety procedures
and illustrations.
SPECIFICATIONS
WHEEL TORQUE LIMITS
-
F-100 THRU F-350, ECONOLINE, BRONCO,
P-350
THRU -500
Model
E-100, E150>
F-100 (4 x 4), U-100 (Std. Wheel) P-100
F-250-250 (4 x
4)
P-350
(W-5200 Ib. Axle)
F-350, P-350,
E-350
P-400
(W/Single Rear Wheel)
E-350
E-250
E-350
S/R
E-350
D/R
Nut
Size
1/2-20
9/16-18
1/2-20
9/16-18
9/16-18
Ft-Lb
90
135
135
135
210
Model
E-350, F-350,
P-350,
P-450
(W/Dual Wheels)®
(and 7400 Ib Axle)®
P-500
Nut Size
9/16-18
3/4-16
or
1-1/8-16
Ft-Lb
210
450
® E-350,
F-250
and
F-350
Single Rear Wheel Lug Nuts are
Black in Color.
(2) E-350, F-350,
P-350
and
P-400
Dual Rear Wheel Lug Nuts
are Zinc Plate in Color.
The Lug Nuts Should not be mixed. The Dual Wheel Lug
Nuts are Left Handed Threads for Left Rear Wheels Only.
CF1804-D
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