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Installation, tightening and alignment
8–lug wheel
10–lug wheel
When installing wheels, be certain that the threads on studs and nuts are
clean to permit correct torquing of nuts. The mounting surfaces of rims,
wheels, spacer rings and clamps must be free of dirt, rust, lubricants or
damage.
Use a wire brush to clean the mounting contact surfaces. Do not use
lubricant on threads.
After the rim or wheel has been properly tightened, it should be checked
for alignment. Rotate the wheel with a piece of chalk attached to a
steady, firm surface, and placed to just barely clear the outside surface of
the tire bead seat. This procedure will point out the high spot. A high
spot does not necessarily mean that the lug nuts have been unevenly
tightened. This condition or misalignment could be caused by a bent
wheel.
Checking the alignment of the wheel/rim installation is more important
on cast spoke rims since the rims can be drawn out of alignment when
improperly tightened. Use the following installation procedures.
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USA English(fus)
Maintenance and specifications
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Disc wheel with flange nuts (hub-piloted)
Front wheel mounting of flange nut
system
1. Flange nut
2. Wheel(s)
3. Brake drum
4. Wheel stud (22 mm)
5. Wheel hub
Rear wheel mounting of flange nut
system
1. Flange nut
2. Wheel(s)
3. Brake drum
4. Wheel stud (22 mm)
5. Wheel hub
1. Slide inner rear or front tire and wheel in position over studs and push
it back as far as possible. Use care so that the threads on studs are not
damaged.
2. Position the outer rear tire and wheel in place over the studs and
push it back as far as possible. Use care so that the threads on studs are
not damaged.
3. Run the nuts on the studs until they contact the wheel(s). Rotate the
wheel assembly a half-turn to permit the parts to seat.
4. Draw up the nuts alternately following the crisscross sequence
illustrated underInstallation, tightening and alignment. Do not fully
tighten the nuts. This will allow uniform seating of the nuts and assure
even face-to-face contact of the wheel and hub.
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Maintenance and specifications
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5. Continue tightening the nuts to the torque specifications in the torque
chart using the same crisscross sequence shown.
6. After operating the vehicle approximately 50 miles (80 km), check the
nuts for tightness. Some natural seating of parts may be encountered
and the torque on the nuts will drop. Retighten all nuts to specifications.
Once a week, inspect and retighten the wheel stud nuts.
Aluminum rear disc wheel with flange nuts (hub-piloted)
1. Flange nut
2. Wheel(s)
3. Brake drum4. Wheel stud (22 mm)
5. Wheel hub
6. Wheel locator pad
Prior to re-installing rear aluminum hub-piloted wheels, clean each wheel
locator pad on the hub from all dirt, rust and foreign material. Apply a
light coat of chassis grease, never-seize or disc brake corrosion control
grease, only to the wheel locator pad.
When installing the tire and rim assembly on disc-brake equipped axles,
make sure the tire valve stem clears the brake caliper. The use of a tire
manufacturer’s stem forming tool is the only acceptable method of
obtaining clearance when necessary.
1
6
5
4
32
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USA English(fus)
Maintenance and specifications
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Note:Always observe the following instructions:
•Always loosen rim clamps before complete removal of nut from stud
(cast spoke wheels). With loosened nuts on stud, strike clamps with a
heavy hammer and be sure each clamp is loose.
•Always deflate tires completely before removing locks or side rings.
•Always inflate tires in a safety cage.
•Never mix rim side rings or lock rings of different types,
manufacturers or sizes.
•Never use cracked, bent or badly rusted parts.
•Never re-inflate flat tires on-vehicle; use the spare tire.
•Never add air until each side ring or lock ring is fully seated.
•
Never hammer side ring or lock ring on a partially- or fully-inflated tire.
Failure to follow these instructions could result in property
damage, personal injury or death
Proper torque
It is important to tighten and maintain wheel and rim mounting nuts to the
proper torque. Loose nuts or over-tightened nuts can lead to premature
wear and possible failure of the wheel and/or mounting hardware.
Changing wheel types
Consult your dealer or wheel/rim distributor before attempting any wheel
or fastener changes.
Use only the same type and style wheels and mounting hardware
to replace original parts. Failure to do so may result in an
assembly that looks fine, but does not fit together properly. This could
possibly cause wheel or fastener failures which could result in property
damage, personal injury or death.
Note:Do not attempt to mix stud-piloted wheels or fasteners with
hub-piloted wheels or fasteners.
Note:Do not change from aluminum wheels to steel wheels or
vice-versa without changing the mounting hardware required or, with
flange-nut mounting systems, changing the hub and stud assembly.
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Supplement
USA English(fus)
Maintenance and specifications
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WHEEL NUT TORQUE
Size Nut mountingTorque
Ft. lbs. N•m
22 mm Flange 450–500 610–678
Note:Do not use lubrication on dry threads. Where excessive corrosion
exists, a light coat of lubricant on the first three threads of the stud bolt
is permitted. Keep lubricant away from:
•Hex nut and rim clamp contact surfaces.
•Cap nut ball face and ball seat on the disc wheel.
•Flange nut washer surface and flat on the disc wheel.
TIRE/WHEEL RIM SELECTION AND INFLATION PRESSURES
Tire sizeLoad
rangeApproved
rim widthsAxle capacity
Front - lbs.
(kg)/psi (kPa)Rear - lbs.
(kg)/psi (kPa)
225/70R19.5 F 6.00, 6.757280 (3302) /
95 (655)13660 (6196) /
95 (655)
245/70R19.5 F 6.75, 7.508160 (3701) /
85 (586)15500 (7031) /
85 (586)
245/70R19.5 G 6.75, 7.509090 (4123) /
100 (690)17500 (7938) /
100 (690)
265/70R19.5 G 7.50, 8.2510710 (4858) /
120 (827)20280 (9199) /
120 (827)
9R22.5 F 6.75, 7.509000 (4082) /
105 (724)15800 (7167) /
95 (655)
10R22.5 F 6.75, 7.5010300 (4672) /
100 (690)19500 (8845) /
100 (690)
10R22.5 G 6.75, 7.5011360 (5153) /
115 (793)21000 (9526) /
115 (793)
11R22.5 G 7.50, 8.2512350 (5602) /
105 (724)23000 (10433) /
105 (724)
11R22.5 H 7.50, 8.2513220 (5997) /
120 (827)23200 (10524) /
110 (758)
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Supplement
USA English(fus)
Maintenance and specifications
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LUBRICANT SPECIFICATIONS
Component /
Component
vendorLubrication type Vendor
recommendations:
Viscosity / Ambient
temperature / NotesEquivalent Ford part
name / number
Non-driving front axle
Eaton-Spicer axle
(generic) - front
axle wheel bearing
oilMultipurpose EP
gear lube of API
GL-5 quality
meeting
MIL-PRF-2105E
specifications
including
synthetic*
lubricants.
(* Do not mix
conventional and
synthetic
lubricants.)SAE 75W:–40°Fto
–15°F(–40°Cto
–26°C)Motorcraft SAE
75W-90 Fuel Efficient
High Performance
Synthetic Rear Axle
Lubricant /
XY-75W90–FEHP
SAE 75W-80: -40°Fto
80°F(–40°Cto27°C)Motorcraft SAE
75W-90 Fuel Efficient
High Performance
Synthetic Rear Axle
Lubricant /
XY-75W90–FEHP
SAE 75W-90:–40°Fto
100°F(–40°Cto38°C)Motorcraft SAE
75W-90 Fuel Efficient
High Performance
Synthetic Rear Axle
Lubricant /
XY-75W90–FEHP
SAE 75W-140:–40°F
andabove(–40°Cand
above)Motorcraft SAE
75W-90 Fuel Efficient
High Performance
Synthetic Rear Axle
Lubricant /
XY-75W140–QL
SAE 80W-90:–15°Fto
100°F(–26°Cto
–38°C)Motorcraft SAE
80W-90 Premium Rear
Axle Lubricant /
XY-80W90–QL
SAE 80W-140:–15°F
andabove(–26°Cand
above )Motorcraft SAE
75W-140 High
Performance Rear Axle
Lubricant /
XY-75W140–QL
SAE 85W-140: 10°F
andabove(–12°Cand
above)Motorcraft SAE
75W-140 High
Performance Rear Axle
Lubricant /
XY-75W140–QL
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USA English(fus)
Maintenance and specifications
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Component /
Component
vendorLubrication type Vendor
recommendations:
Viscosity / Ambient
temperature / NotesEquivalent Ford part
name / number
Spicer axle - front
axle wheel bearing
oilMultipurpose EP
gear lube of API
GL-5 quality
meeting
MIL-PRF-2105E
specifications
including
synthetic*
lubricants.(* Do
not mix
conventional
and synthetic
lubricants.)SAE 75W:–40°Fto
32°F(–40°Cto0°C)Motorcraft SAE
75W-90 Fuel Efficient
High Performance
Synthetic Rear Axle
Lubricant /
XY-75W90–FEHP
SAE 75W-90:–40°Fto
100°F(–40°Cto38°C)Motorcraft SAE
75W-90 Fuel Efficient
High Performance
Synthetic Rear Axle
Lubricant /
XY-75W90–FEHP
SAE 75W-140:–40°F
andabove(–40°Cand
above)Motorcraft SAE
75W-140 High
Performance Rear Axle
Lubricant /
XY-75W140–QL
SAE 80W:–15°Fto
70°F(–26°Cto21°C)Motorcraft SAE
80W-90 Premium Rear
Axle Lubricant /
XY-80W90–QL
SAE 80W-140:–15°F
andabove(–26°Cand
above)Motorcraft SAE
75W-140 High
Performance Rear Axle
Lubricant /
XY-75W140–QL
SAE 90W: 10°Fto
100°F(–12°Cto38°C)SAE 90 Hypoid Gear
Oil / C6AZ-19580–E
SAE 85W-140: 10°F
andabove(–12°Cand
above)Motorcraft SAE
75W-140 High
Performance Rear Axle
Lubricant /
XY-75W140–QL
SAE 140W: 40°Fand
above (4°C and above)Motorcraft SAE
75W-140 High
Performance Rear Axle
Lubricant /
XY-75W140–QL
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USA English(fus)
Maintenance and specifications
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Component /
Component
vendorLubrication type Vendor
recommendations:
Viscosity / Ambient
temperature / NotesEquivalent Ford part
name / number
Eaton-Spicer axle,
Spicer axle - Front
axle wheel bearing
grease, tie rod
ends, drag link,
kingpin and
bushingEP2 Lithium
complex-based
moly grease (or
equivalent) GC/LB
NLGI #2
multi-purpose
lithium complex
greaseNote:Eaton-Spicer
and Meritor Easy Steer
axles: With chassis load
on axle, force grease
through thrust
bearings; then with
axle lifted clear of the
floor, force grease
between kingpin and
bushing surfaces.Motorcraft Premium
Long Life Grease /
XG-1-C
Steering
Power steering
fluid changeMERCON—Motorcraft Mercon
Multi-Purpose (ATF)
Transmission Fluid /
XT-2-QDX
Steering gear Ross
TAS-Output SealGC/LB NLGI #2
lithium
complex-based
moly grease or
multi-purpose
lithium complex
grease—Motorcraft Premium
Long Life Grease /
XG-1-C
Steering column
U-joints / slip jointGC/LB NLGI #2
lithium
complex-based
moly grease or
multi-purpose
lithium complex
grease—Motorcraft Premium
Long Life Grease /
XG-1-C
Propeller shaft
U-joint GC/LB NLGI #2
lithium
complex-based
moly grease or
multi-purpose
lithium complex
grease—Motorcraft Premium
Long Life Grease /
XG-1-C
Clutch
Release bearing /
shafts / forkGC/LB NLGI #2
lithium
complex-based
moly grease or
multi-purpose
lithium complex
grease—Motorcraft Premium
Long Life Grease /
XG-1-C
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