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5. The lubricant level should be up to the bottom of the filler plug
opening.
6. If necessary, add enough lubricant through the filler plug opening so
that the lubricant level is at the bottom of the opening.
7. Clean and install the filler plug securely.
Draining and refilling the rear axle lubricant
1. Drain the rear axle while the lubricant is warm.
2. Park the vehicle on level ground.
3. Set the parking brake and shift into N (Neutral) (automatic
transmission) or 1 (First) (manual transmission) and turn the engine off.
4. Clean any dirt from around the rear axle filler and drain plugs.
5. Remove the filler and drain plugs and drain the lubricant into a
suitable container. Dispose of all used automotive fluids in a responsible
manner following your local authorized standards.
6. Clean and install the drain plug securely.
7. Add enough lubricant through the filler plug opening so that the
lubricant level is up to the bottom of the opening.
8. Clean and install the filler plug securely.
WHEELS
General
Wheel bearings should be inspected, lubricated and adjusted at regular
intervals. This is especially important if operating in deep sand, mud, or
water. Refer toLubricant specificationsin this chapter.
When installing wheel balance weights, they must be mounted on the
dome-side of the wheel only. Failure to do so may result in loss of wheel
weight and/or damage to brakes or wheels.
Important:Remember to replace the wheel air valves when the road
tires are replaced at the end of their useful life.
Oil lubricated front wheel bearings
During normal vehicle duty cycle, the lube and air inside the hub/wheel
cavity expands and if not vented, causes pressure build-up that could
cause accelerated seal wear.
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Maintenance and Specifications
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ComponentLubrication
typeViscosity /
Ambient
temperature /
NotesEquivalent
Ford part
name /
number
Cooling system
Engine coolant Refer to engine operator’s manual
Windshield washer
Washer fluid WSB-M8B16-A2 — Motorcraft
Premium
Windshield
Washer
Concentrate /
ZC-32-A
Transmission
Eaton-Fuller Petroleum oil:
Engine oil
API-SL or
API-CF
(MIL-L-2104E
or
MIL-L-46152E)SAE 50: above
10°F (–12°C)—
SAE 40: below
10°F (–12°C)—
Mineral gear
oil: API-GL-1
(rust and
oxidation
inhibited)SAE 80W–90:
above 10°F
(–12°C)—
SAE 75W:
below 10°F
(–12°C)—
Synthetic oil:
Eaton,
Roadranger
synthetic
CD-50
transmission
fluidCD SAE 50: All
temperatures—
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Maintenance and Specifications
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ComponentLubrication
typeViscosity /
Ambient
temperature /
NotesEquivalent
Ford part
name /
number
Spicer
(non-synchronized)
(lubricants are
listed in order of
preference)Petroleum oil:
Engine oil
API-SL or
API-CF
(MIL-L-2104E
or
MIL-L-46152E)SAE 50: above
0°F (–18°C)—
SAE 40: below
0°F (–18°C)—
Mineral gear
oil: API-GL-1
(rust and
oxidation
inhibited) (EP
gear oils are
not acceptable)SAE 90: above
0°F (–18°C)—
SAE 80: below
0°F (–18°C)—
Synthetic oil:
Synthetic
Engine Oil
meeting
MIL-L-2104E or
MIL-L-46152E,
API-SL or
API-CFCD SAE 50: All
temperatures—
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Maintenance and Specifications
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ComponentLubrication
typeViscosity /
Ambient
temperature /
NotesEquivalent
Ford part
name /
number
Spicer
(synchronized)
(lubricants are
listed in order of
preference)Petroleum oil:
Engine oil
API-SL or
API-CF
(MIL-L-2104E
or
MIL-L-46152E)SAE 50: above
10°F (–12°C)—
SAE 40: below
10°F (–12°C)—
Mineral gear
oil: API-GL-1
(rust and
oxidation
inhibited)SAE 90: above
10°F (–12°C)—
SAE 80W:
below 10°F
(–12°C)—
Synthetic oil:
Synthetic
Engine Oil
meeting
MIL-L-2104E or
MIL-L-46152E,
API-SL or
API-CFSAE 50: All
temperatures—
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Maintenance and Specifications
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ComponentLubrication
typeViscosity /
Ambient
temperature /
NotesEquivalent
Ford part
name /
number
Meritor Petroleum oil:
Heavy Duty
Engine Oil
MIL-L-2104E or
API-SL or
API-CF
(previous API
designations
acceptable)SAE 50: above
10°F (–12°C)—
SAE 40: above
10°F (–12°C)—
SAE 30: below
10°F (–12°C)Motorcraft SAE
30 Super Duty
Motor Oil /
XO-30-QSD
Mineral gear oil
with rust and
oxidation
inhibitor
API-GL-1Do
not use
multi-weight
and GL-5 EP
gear oils; they
may cause
transmission
failure or
damage.SAE 90: above
10°F (–12°C)—
SAE 80: below
10°F (–12°C)—
Synthetic oil:
MIL-L-2104E or
MIL-L-46152D
Do not use
multi-weight
and GL-5 EP
gear oils; they
may cause
transmission
failure or
damage.SAE 50: All
temperatures—
Allison Refer to transmission operator’s manual
Eaton UltraShift Refer to transmission driver instructions manual
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Maintenance and Specifications
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ComponentLubrication
typeViscosity /
Ambient
temperature /
NotesEquivalent
Ford part
name /
number
Cab components
Hydraulic lift pump
fluidDexron III — Motorcraft
MERCON
Multi-Purpose
(ATF)
Transmission
Fluid /
XT-2-QDX
Cab latch and lock
leversMobile SHC 32
Low
Temperature
Lubricant (or
equivalent)——
Cab latch pivots;
Door check, hinges,
latches and strikers;
Seat adjuster slidesGC/LB NLGI #2
lithium
complex-based
moly grease (or
equivalent) or
multi-purpose
lithium
complex grease— Motorcraft
Premium Long
Life Grease /
XG-1-C
Cab latch pivot pins Light engine oil — Motorcraft SAE
5W-30 Super
Premium Motor
Oil /
XO-5W30-QSP
Door lock cylinders Lock oil — Motorcraft
Penetrating
and Lock
Lubricant /
XL-1
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Maintenance and Specifications
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ComponentLubrication
typeViscosity /
Ambient
temperature /
NotesEquivalent
Ford part
name /
number
Door window
regulatorsNGLI #2
multipurpose
lithium
complex grease— Motorcraft
Multi-Purpose
Grease Spray /
XL-5 or
Motorcraft
Multi-Purpose
Grease / XG-4
Weatherstripping Silicone
lubricant— Motorcraft
Silicone Spray /
XL-6
Engine oil
Refer to engine operator manual
Brake fluid
Master cylinder DOT 3,
WSS-M6C62-A
or
WSS-M6C65-A1— High
Performance
DOT 3 Motor
Vehicle Brake
Fluid, PM-1-C
(U.S.) or
CPM-1-C
(Canada)
REFILL CAPACITIES
Rear axle
Axle codeWeight
capacity - lb.
(kg)DescriptionFluid capacity
- pints
(liters)1,2
S135–S 13500 (6123) Single rear axle,
single reduction24.5 (11.6)
4S150–S 15500 (7031) Single rear axle,
single reduction24.5 (11.6)
17060S 17500 (7938) Single rear axle,
single reduction28.0 (13.2)
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Engine coolant and oil
Engine typeEngine coolant
(approximate
capacity) *Engine oil
(approximate
capacity)
Caterpillar57.0 pints
(27.0L)Refer to engine
operator’s
manual.
Cummins52.0 pints
(24.6L)
* Add the coolant type originally equipped in your vehicle.
Power steering system
Steering gear Power steering fluid volume
TAS40 17.6 pints
TAS66 18.4 pints
Transmission
Description Pints (Liters)
Allison 2000 Series 30.0 (14.2)*
Allison 3000 Series 37.6 (17.8)*
FS-5205A 5–speed manual 12.5 (5.9)
FS-5406A/5406N and
FS-6406A/FSO–6406A 6–speed
manuals19.5 (9.2)
ES56–7B/ES066–7B 7–speed
manual22.0 (10.4)
*Total fluid capacity (dry transmission and torque converter).
Air conditioner refrigerant - r134a
Lb. (Kg) Oz.
2.50 (1.13) 40
Note:This system uses PAG-type refrigerant oil.
Refrigerant fitting torque
Captured washer nut: 170–190 inch lb. (19–21 N•m)
Note:This system uses mineral based refrigerant oil to lubricate o-rings
and fittings.
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Maintenance and Specifications
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