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Engine and Driveline System
•Transmission Enclosure:inspect for cracks, holes, and tears. Clean
any deposits such as oil, dirt, and stones.
•Engine valve covers and block covers are made to damp out engine
mechanical noise and, if needed, should be replaced with
recommended parts. Check for mechanical isolations.
Exhaust System
•Inspect the exhaust system for leaks at various joint connections and
tighten the clamps.
•Do a visual inspection for cracks or holes in the muffler and tail pipe.
•Always use the recommended parts when items need to be replaced.
•The tail pipe elbow or offset tail pipe orientation must not be changed
from the standard position as originally received.
•To avoid abnormal changes in vehicle sound levels, it is necessary for
the owner to perform inspections and necessary maintenance at the
intervals shown in theGeneral Maintenance Informationsection.
CHASSIS-MOUNTED CHARGE AIR COOLER
Inspect charge air cooler daily
With the engine off, visually inspect the charge air cooler core assembly
for debris and clogging of external fins. Prior to engine operation,
remove any debris blocking the core.
•Turbocharger-to-charge air cooler
•Charge air cooler-to-intake manifold pipe
•Mounting bracket
•Chassis-mounted charge air cooler core
Inspect air intake piping
•Check for accumulation of salt deposits (where applicable). If present,
disassemble and clean the complete air intake piping system. If the
intake piping is pitted, use RTV silicone to seal joints against leakage.
•Check for loose hoses and clamps.
•Check for ruptured or collapsed hoses.
•Check air cleaner housing for cracks.
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Supporting your vehicle for service
When performing service repairs on your vehicle, first prepare the
vehicle by doing the following:
1. Park the vehicle on a level concrete floor.
2. Set the parking brake and block the wheels to prevent the vehicle
from moving.
3. Select a jack with a rated capacity sufficient to lift and hold up the
vehicle.
4. Raise the vehicle with the jack applied to the axle(s). DO NOT use the
bumper as a lifting point.
5. Support the vehicle with floor stands under the axle(s). If the axle or
the suspension are being serviced, support the vehicle with floor stands
under the frame side-members, preferably between the axles.
Do not use a jack when working under a vehicle. It may give
way, causing the vehicle to fall and result in property damage,
personal injury or death. Always use floor stands to support the
vehicle.
FRAME AND TOW HOOKS
Your vehicles chassis is manufactured with frame rails of either mild
carbon steel, or HSLA steel. Each must be handled in a specific manner
to assure maximum service life. Before attempting frame repair or
modification, consult the service manual or your dealer.
It is important, particularly on vehicles where the tow hooks are used
frequently to inspect the front and rear tow hooks for damage or a loose
mounting.
U-BOLT NUT TORQUE
U-bolt diameter (nominal) (all spring
suspensions)U-bolt diameter
(nominal)
Ft. lbs. N•m
IROS Air w/15,500 lb. axles and less 260–300 353–407
IROS Air w/ greater than 15,500 lb. axles 370–400 502–542
Hendrickson 23,000 lb. axle 370–400 502–542
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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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Component /
Component
vendorLubrication type Vendor
recommendations:
Viscosity / Ambient
temperature / NotesEquivalent Ford part
name / number
Meritor -
single-speed axle
(cont’d)Fill at the factory
with Synthetic
SAE 75W-90, will
have a tag
attached to fill
plug that reads as
follows:“Filled
with synthetic
lube. Do not mix.”—
Multipurpose EP
gear lube of API
GL-5 quality
meeting
MIL-PRF-2105E
specifications
including
synthetic*
lubricants.
(* Do not mix
conventional and
synthetic
lubricants.)SAE 85W-140: above
10°F(–12°C)Motorcraft SAE
75W-140 High
Performance Rear Axle
Lubricant /
XY-75W140-QL
SAE 85W-140: above
–15°F(–26.1°C)Motorcraft SAE
75W-140 High
Performance Rear Axle
Lubricant /
XY-75W140-QL
SAE 80W-90: above
–15°F(–26.1°C)Motorcraft SAE
80W-90 Premium Rear
Axle Lubricant /
XY-80W90-QL
SAE 75W maximum
outside temperature
(35°F (1.6°C); Above
–40°F(–40°C)Motorcraft SAE
75W-90 Fuel Efficient
High Performance Axle
Lubricant /
XY-75W90-FEHP
SAE 75W-140: Above
–40°F (Above–40°C)Motorcraft SAE
75W-140 High
Performance Rear Axle
Lubricant /
XY-75W140-QL
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)——
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Component /
Component
vendorLubrication type Vendor
recommendations:
Viscosity / Ambient
temperature / NotesEquivalent Ford part
name / number
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
pinsLight engine oil—Motorcraft SAE 5W-30
Super Premium Motor
Oil / XO-5W30-QSP
Door lock
cylindersLock oil—Motorcraft Penetrating
and Lock Lubricant /
XL-1
Door window
regulatorsNGLI #2
multipurpose
lithium complez
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
6.0L Power Stroke
engineAPI CI-4 / SL SAE 15W–40 above
10°F(–12°C)Motorcraft SAE
15W-40 Super Duty
Motor Oil /
XO-15W40-QSD
SAE 10W-30–10°Fto
90°F(–23°Cto32°C)Motorcraft SAE
10W-30 Super Duty
Motor Oil /
XO-10W30-QSD
SAE 0W–30 below 0°F
(–18°C)Motorcraft SAE 0W-30
Super All Season
Motor Oil /
XO-0W30-LAS
Cummins B and
Caterpillar enginesRefer to engine operator manual
Brake fluid
All vehicles DOT 3,
ESA-M6C25–A—Motorcraft High
Performance Motor
Vehicle Brake Fluid /
PM-1
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REFILL CAPACITIES
Rear axle
Axle codeWeight capacity -
lbs. (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)
19055T 17500 (7938) Single rear axle,
two-speed28.0 (13.2)
M190–T 19000 (8618) Single rear axle,
two-speed35.0 (17.0)
19060S 19000 (8618) Single rear axle,
single reduction28.0 (13.2)
21060S 21000 (9525) Single rear axle,
single reduction28.0 (13.2)
21060D 21000 (9525) Single rear axle,
single reduction28.0 (13.2)
M210T 21000 (9525) Single rear axle,
two-speed16.0 (33.0)
23090S 23000 (10432) Single rear axle,
single reduction39.0 (18.5)
23090D 23000 (10432) Single rear axle,
single reduction
with
driver-controlled
locking differential39.0 (18.5)
23082T 23000 (10432) Single rear axle,
two-speed37.0 (17.5)
1Quantities listed are approximate. Fill axle until the lubricant level is at
the bottom of the filler hole, with the vehicle on level ground.
2If hubs are removed, add an additional 1.6 pints (0.75L) of axle
lubricant. Add lubricant through the axle vent.
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In addition to the items to be performed daily or at each oil change, the
following need to be completed as specified:
Maintenance Operation Frequency — ObservationClean body/door drain holes.
Clean windshield wiper blades.
Replace windshield wiper blades.
Lubricate body lock cylinders, door and hood hinges.
Check headlamp alignment.
Check windshield washer fluid level. Add fluid if required.At least twice annually.
As required.
If wiping the blades with a clean cloth and mild detergent
and washing the windshield with a cleaner does not restore
a clean wipe.
Difficult to operate or noisy.
Lamp beams in wrong position when vehicle operating
loaded.
If washers do not spray fluid when operated. GENERAL MAINTENANCE SERVICES
Listed below are vehicle checks that should be made periodically either by the owner or a qualified technician. It is recommended
that deficiencies be brought to the attention of your dealer or another qualified service outlet as soon as possible in order that
advice regarding the need for service or replacement can be obtained.
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ComponentLUBRICATION MAINTENANCE LEVEL CHART - ON HIGHWAY (Continued)
(On Highway: 60,000 Miles or more Annually) - Miles, Kilometers or Months - Whichever Occurs First
Miles (000) 15 30 45 60 75 90 105 120 135 150
Kilometers (000) 24 48 72 96 120 144 168 192 216 240
Months 3 6 9 12 15 18 21 24 27 30
Rear axle
Fluid level - check••••••••••
Eaton / Dana / Spicer petroleum oil - change••
Eaton / Dana / Spicer synthetic oil - change Factory fill w/synthetic at 500,000 miles (800,000 km);
Converted to synthetic at 250,000 miles (400,000 km) or three
years
Cab components
Door hinges / Latches / Strikers - lubricate, check link••
Door lock cylinders - lubricate••
Seat adjuster slides - lubricate••
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