2006 FORD F750 GEAR OIL

1. Shift collar in the locked position
2. Actuator assembly and shift fork
3. Axle shaft
4. Interference between the shift
collar and housing
5. Shift collar in the unlocked
position
6. Outer splines - axle shaft to collar
7. Shift collar and differential case
splines
8. Inner splines - axle shaft to side
gear
9. Side gear
10. Differential (plain) case half
Removing axle shafts before towing
1. Shift the main differential to the unlocked (disengaged) position. The
differential lock light will turn off.
2. Remove the capscrews and washers or stud nuts and washers from
flanges of both axle shafts.
3. Loosen the tapered dowels in the flanges of both axle shafts by
holding a 1
12inch diameter brass drift or hammer against the axle shaft
center and hitting it with a five or six pound hammer.Note:Do not use
a chisel or wedge to loosen the axle shafts and dowels. Use of a chisel or
wedge can damage the hub, axle shafts and oil seals.
4. Remove the tapered dowels and both axle shafts from the axle
assembly.
5. Assemble a cover over openings of both wheels ends to prevent loss of
lubricant and keep dirt away from the wheel bearing cavities.
Note:One of the axle shafts has two sets of splines. One set to engage
with the differential side gear and one set to engage with the shift collar
for the differential lock. It may be necessary to rotate the shaft slightly
to align the gear spline teeth with the shift collar teeth in order to
remove the axle shaft.
2006 F-650/750(f67)
Supplement
USA(fus)
Roadside Emergencies
157

LUBRICANT SPECIFICATIONS
ComponentLubrication
typeViscosity /
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°F
to –15°F (–40°C
to –26°C)Motorcraft SAE
75W-90 Fuel
Efficient High
Performance
Synthetic Rear
Axle Lubricant /
XY–75W90–FEHP SAE 75W-80:
-40°F to 80°F
(–40°C to 27°C)
SAE 75W-90:
–40°F to 100°F
(–40°C to 38°C)
SAE 75W-140:
–40°F and above
(–40°C and
above)Motorcraft SAE
75W-90 Fuel
Efficient High
Performance
Synthetic Rear
Axle Lubricant /
XY–75W140–QL
SAE 80W-90:
–15°F to 100°F
(–26°C to
–38°C)Motorcraft SAE
80W-90
Premium Rear
Axle Lubricant /
XY–80W90–QL
SAE 80W-140:
–15°F and above
(–26°C and
above)Motorcraft SAE
75W-140 High
Performance
Rear Axle
Lubricant /
XY–75W140–QL SAE 85W-140:
10°F and above
(–12°C and
above)
2006 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
218

ComponentLubrication
typeViscosity /
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°F
to 32°F (–40°C
to 0°C)Motorcraft SAE
75W-90 Fuel
Efficient High
Performance
Synthetic Rear
Axle Lubricant /
XY–75W90–FEHP SAE 75W-90:
–40°F to 100°F
(–40°C to 38°C)
SAE 80W: –15°F
to 70°F (–26°C
to 21°C)Motorcraft SAE
80W-90
Premium Rear
Axle Lubricant /
XY–80W90–QL
SAE 90W: 10°F
to 100°F (–12°C
to 38°C)SAE 90 Hypoid
Gear Oil /
C6AZ–19580–E
SAE 75W-140:
–40°F and above
(–40°C and
above)Motorcraft SAE
75W-140 High
Performance
Rear Axle
Lubricant /
XY–75W140–QL SAE 80W-140:
–15°F and above
(–26°C and
above)
SAE 85W-140:
10°F and above
(–12°C and
above)
SAE 140W: 40°F
and above (4°C
and above)
2006 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
219

ComponentLubrication
typeViscosity /
Ambient
temperature /
NotesEquivalent
Ford part
name / number
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—
2006 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
222

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—
2006 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
223

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—
2006 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
224

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
manual——
2006 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
225

ComponentLubrication
typeViscosity /
Ambient
temperature /
NotesEquivalent
Ford part
name / number
Spicer -
single-speed
axleMultipurpose EP
gear lube of API
GL-5 quality
meeting
MIL-PRF-2105E
specifications
including
synthetic
lubricantsSAE 75W: –40°F
to 32°F (–40°C
to 0°C)Motorcraft SAE
75W-90 Fuel
Efficient High
Performance
Axle Lubricant /
XY-75W90-FEHP SAE 75W-90:
–40°F to 100°F
(–40°C to 38°C)
SAE 80W: –15°F
to 70°F (–26°C
to 21°C)
SAE 75W-140:
–40°F and above
(–40°C and
above)Motorcraft SAE
75W-140 High
Performance
Rear Axle
Lubricant /
XY-75W140-QL SAE 80W-140:
–15°F and above
(–26°C and
above)
SAE 85W-140:
10°F and above
(–12°C and
above)
SAE 140W: 40°F
and above (4°C
and above)
SAE 90W: 10°F
to 100°F (–12°C
to 38°C)SAE 90 Hypoid
Gear Oil /
C6AZ-19580-E
2006 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
227