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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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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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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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Tire sizeLoad
rangeApproved
rim widthsAxle capacity
Front - lbs.
(kg)/psi (kPa)Rear - lbs.
(kg)/psi (kPa)
12R22.5 H 8.25, 9.0014780 (6704) /
120 (827)27000 (12247) /
120 (827)
245/75R22.5 G 6.75, 7.509350 (4241) /
110 (758)17640 (8002) /
110 (758)
255/70R22.5 H6.75, 7.50,
8.2511020 (4999) /
115 (793)20280 (9199) /
115 (793)
265/75R22.5 G 7.50, 8.2510410 (4722) /
110 (758)19220 (8718) /
100 (690)
275/70R22.5 H 7.50, 8.2513220 (5997) /
125 (862)24700 (11204) /
125 (862)
275/80R22.5 G 7.50, 8.2512350 (5602) /
110 (758)22700 (10297) /
110 (758)
295/75R22.5 G 8.25, 9.0012350 (5602) /
110 (758)22700 (10297) /
100 (690)
295/80R22.5 H 8.25, 9.0014780 (6704) /
115 (793)26440 (11993) /
115 (793)
LUBRICATION AND MAINTENANCE INTERVALS
New vehicles are lubricated at the factory. After the vehicle is placed in
operation, regular lubrication intervals, based on the type of service and
road conditions, should be established. Thorough lubrication at the
specified intervals will insure outstanding life cycle value and will reduce
overall expense.
The lubrication intervals specified should be performed at whatever
interval occurs first, whether it is months, miles (kilometers) or hours.
Only lubricants of superior quality, such as Motorcraft lubricants, should
be used. The use of inferior products will reduce the service life of the
vehicle or result in failure of its components.
Unless otherwise specified, never add lubricant unless it is the same
grade as that which is already being used. If the grade is not known or
not available, drain, flush and refill with new lubricant.
The interval between lubrication periods, oil changes, etc. depends
entirely upon operating conditions. The loads carried, speeds, road and
weather conditions all contribute to the frequency of lubrication periods.
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In some types of operation, and where operating conditions are
extremely severe (such as in deep water, mud or unusually dusty
conditions), the vehicle may require lubrication after every 24 hours of
operation.
Maintenance intervals
Maintenance intervals are provided for three types of general vehicle
environments: On-Highway, City and Severe Service. In all applications,
the actual interval is determined by monitoring kilometers (miles) and
time and when the engine is due for an oil change. When the engine oil
change is required prior to the truck lubrication interval, it is
recommended that the lubrication be performed at the same time in
order to reduce your vehicle’s time out of service.
•On-Highway:60,000 miles (96,000 km) or more annually.
•City:59,000 miles (95,000 km) or less annually.
•Severe Service:20,000 miles (32,000 km) or less annually on/off
road in dirty conditions.
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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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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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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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