2015 FORD F750 maintenance

If an overfill occurs, excess fluid
should be removed by a qualified
technician.
Note:An overfill condition of transmission fluid may cause shift or
engagement concerns or possible damage.
Do not use supplemental transmission fluid additives, treatments or
cleaning agents. The use of these materials may affect transmission
operation and result in damage to internal transmission components.
Manual Transmissions
Note:Use of a non-approved transmission fluid may cause internal
transmission component damage.
See theScheduled Maintenancechapter for scheduled intervals for
fluid checks and changes.
Your manual transmission may have an optional synthetic fluid that
allows the use of extended service intervals. A tag on the filler plug
identifies the use of the synthetic fluid.
Only use fluid that meets manufacturer specifications. SeeTechnical
specificationsin theCapacities and Specificationschapter.
Checking Fluid Level
1. Park your vehicle on level ground.
2. Set the parking brake, shift into first gear and turn the engine off.
3. Clean any dirt from around the filler plug.
4. Remove the filler plug and inspect the fluid level. The fluid level
should be at the bottom of the filler plug opening.
5. Add fluid, if necessary, through the filler plug opening.
6. Clean and install the filler plug securely.
Changing Fluid
Drain and refill your transmission fluid while it is warm.
1. Park your vehicle on level ground.
2. Set the parking brake, shift into first gear and turn the engine off.
3. Clean any dirt from around the filler and drain plugs.
4. Remove the filler plug and drain plug, and then drain the fluid into a
suitable container. Dispose of all used automotive fluids in a
responsible manner following your local authorized standards.
5. Clean and install the drain plug securely.
6. Add fluid through the filler plug opening.
7. Clean and install the filler plug securely.
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DRIVESHAFT
Check the universal joints for any evidence of wear or looseness at the
regular lubrication interval. Stop your vehicle immediately, should
driveshaft vibrations occur, to avoid possible hazardous consequences or
damage to other components.
REAR AXLE FLUID
Your rear axle may have an optional synthetic lubricant that allows the
use of extended service intervals. A tag on the filler plug identifies the
use of the synthetic lubricant.
Only use a lubricant that meets manufacturer specifications. See the
Capacities and Specificationschapter.Use of a non-approved rear
axle lubricant may cause internal axle component damage.
Checking the Fluid Level
See theScheduled Maintenancechapter for lubricant check intervals.
1. Park your vehicle on level ground.
2. Set the parking brake and shift into positionNorP(automatic
transmission), or first gear (manual transmission). Turn the engine
off.
3. Clean any dirt from around the axle filler plug.
4. Remove the filler plug and inspect the lubricant level. It should be at
the bottom of the filler plug opening.
5. Add lubricant, if necessary, through the filler plug opening.
6. Clean and install the filler plug securely.
Changing the Fluid
See theScheduled Maintenancechapter for lubricant change intervals.
1. Drain the rear axle while the lubricant is warm.
2. Park your vehicle on level ground.
3. Set the parking brake and shift into positionNorP(automatic
transmission), or first gear (manual transmission). Turn the engine
off.
4. Clean any dirt from around the rear axle filler and drain plugs.
5. Remove the filler and drain plugs. 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 lubricant through the filler plug opening.
8. Clean and install the filler plug securely.
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SPRING U-BOLT CHECKS
Check U-bolt nuts and re-torque every 36000 miles (60000 kilometers)
after initial 1000-mile (1600 kilometer) re-torque. Clean and lubricate the
U-bolt and nut threads and seats to make sure they are in peak condition
when re-torqued.
U-bolt Nut Torque
Suspension ft-lb N•m
Front axle – 8500 lb (3856 kg) 180-200 244-271
Front axle – 10000 lb (4536 kg) and higher 260-300 353-407
Rear axle with multi-leaf 260-300 353-407
Rear axle with IROS air suspension 370-400 502-542
Rear axle with Hendrickson air suspension 400–450 542–610
See air suspension U-bolt re-torqueing and installation information below.
Air Suspension U-bolt Checks and Re-torqueing Procedures
1. Inspect the threads of the U-bolt and nut for rust and debris. Clean
the threads if contaminated.
2. Using a torque wrench, determine if you can turn any nuts with a
force below the specified torque.
3. Using the lowest discovered torqued nut as a starting point,
re-tighten the nuts using the sequence listed underAir suspension
U-bolt and U-bolt nut installation.
Air Suspension U-bolt and U-bolt Nut Installation
1. Inspect the threads of the U-bolt and nut for rust and debris. Clean
the threads if contaminated.
2. Install the U-bolts and nuts and torque the nuts to seat the cap flat
which is about 18 ft-lb (25 N•m) using a diagonal pattern. Use the
same diagonal pattern for each of the following U-bolt nut re-torque
steps.
3. Tighten U-bolt nuts in increments of 74 ft-lb (100 N•m) until
tightened to final torque for the particular suspension.
BRAKE FLUID CHECK
WARNING:Brake fluid is toxic. If brake fluid contacts the eyes,
flush eyes with running water for 15 minutes. Seek medical
attention if irritation persists. If taken internally, drink water and induce
vomiting. Seek medical attention immediately.
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WARNING:If you use a brake fluid that is not DOT 3, you will
cause permanent damage to your brakes.
WARNING:Do not let the reservoir for the master cylinder run
dry. This may cause the brakes to fail.
Check and refill the Full Power brake fluid reservoir using the following
procedure. See theScheduled Maintenancechapter for the service
interval.
1. Clean the reservoir caps before removal to prevent dirt or water from
entering the reservoir.
2. Visually inspect the fluid level. It should be at the bottom of the fill
ports.
3. Add brake fluid, if necessary, from a clean, unopened container until
the level reaches the bottom of the fill ports. Do not fill above this
line.
Only use a DOT 3 brake fluid certified to meet manufacturer
specifications. See theCapacities and Specificationschapter.
CLUTCH FLUID AND LINKAGE
Clutch Fluid
WARNING:Carefully read cautionary information on product
label. For MEDICAL EMERGENCY INFORMATION, contact a
physician or Poison Control Center immediately; on Ford-Motorcraft®
products call: 1-800-959-3673 (FORD). Failure to follow these
instructions may result in personal injury.
Use only a DOT 3 brake fluid designed to meet manufacturer
specifications. See theCapacities and Specificationschapter.
During normal operation, the fluid level in the clutch reservoir should
remain constant. If the fluid level drops, fill to the step in the reservoir.
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1. Set the parking brake, shift into
first gear and turn the engine
off.
2. Open the hood.
3. Clean the reservoir cap before
removal to prevent dirt and
water from entering the
reservoir.
4. Remove cap and rubber
diaphragm from reservoir.
5. Add fluid, if necessary, until it
reaches the step in the reservoir.
6. Reinstall rubber diaphragm and cap onto reservoir.
See theScheduled Maintenancechapter for service intervals.
Clutch Linkage
Lubricate the clutch linkage using the following procedure. Use a grease
that meets manufacturer specifications. See theCapacities and
Specificationschapter.
Transmission and clutch removed for clarity.
1. Set the parking brake, shift into
first gear and turn the engine
off.
2. Remove the inspection cover
from the clutch housing.
3. Lubricate the clutch release
bearing (one location) and the
clutch release shaft (two
locations) grease fittings with a
grease gun.
4. Lubricate the clutch release
wear pads (two locations) where
they contact the clutch release
bearing with a brush or similar
tool.
5. Reinstall the inspection cover.
See theScheduled Maintenancechapter for service intervals.
POWER STEERING FLUID CHECK
Note:To avoid damage to the power steering system, do not operate
your vehicle with a low power steering fluid level.
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Note:If adding fluid is necessary, use only the appropriate fluid. See the
Capacities and Specificationschapter. A low fluid level may indicate a
leak in the power steering system. Inspect the power steering system
and repair the leak or see an authorized dealer or a qualified technician
for service. See theScheduled Maintenancechapter for the
recommended service intervals.
Check the fluid level when it is at ambient temperature, 20°F–80°F
(-7°C–25°C):
1. Set the parking brake, and then start the engine.
2. Shift into positionNorP(if equipped) (automatic transmission) or
first gear (manual transmission) and turn the engine off.
3. Open the hood.
4. Clean the top of the power steering fluid reservoir.
5. Remove the dipstick from the reservoir and wipe the dipstick clean.
6. Reinstall the dipstick. Remove it again and check the fluid level.
Check the MAX. COLD side of the
dipstick if the fluid is cool or warm
to the touch (approximately
68°F-120°F [20°C-49°C]). The fluid
level should be within the FULL
range. If necessary, add fluid in
small amounts, continuously
checking the level, until it reaches
the proper level.
Check the MAX. HOT side of the
dipstick if the fluid is too hot to
touch (approximately 176°F–230°F
[80°C-110°C]). The fluid level
should be within the FULL range. If
necessary, add fluid in small
amounts, continuously checking the
level, until it reaches the proper
level.
When you install the dipstick, make sure to seat it and tighten it
securely.
You can also check the fluid level by looking at the see-through plastic
reservoir. Make sure that the fluid is within the minimum and maximum
fluid range as marked on the reservoir.
ADD MAX. COLD
FULL
ADD MAX. HOT
FULL
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FUEL FILTER
Gasoline Engine
Your vehicle is equipped with a lifetime fuel filter that is part of the fuel
tank. You do need to perform regular maintenance or replace it.
Diesel Engine
WARNING:Do not drain water separator while engine is
running. Fuel may ignite if separator is drained while engine is
running or vehicle is moving.
The fuel filter water separator removes any contaminated particles and
water from the fuel before the fuel enters the engine.
See your engine operator’s manual for information on draining and
replacing the fuel filter.
WASHER FLUID CHECK
WARNING:If you operate your vehicle in temperatures below
40°F (5°C), use washer fluid with antifreeze protection. Failure
to use washer fluid with antifreeze protection in cold weather could
result in impaired windshield vision and increase the risk of injury or
accident.
Add fluid to fill the reservoir if the level is low. Only use a washer fluid
that meets Ford specifications. SeeTechnical specificationsin the
Capacities and Specificationschapter.
State or local regulations on volatile organic compounds may restrict the
use of methanol, a common windshield washer antifreeze additive. Only
use washer fluids containing non-methanol antifreeze agents if they
provide cold weather protection without damaging your vehicle’s paint
finish, wiper blades or washer system.
CHANGING THE VEHICLE BATTERY
WARNING:This vehicle may be equipped with more than one
battery, removal of cable from only one battery does not
disconnect the vehicle electrical system. Be sure to disconnect cables
from all batteries when disconnecting power. Failure to do so may
cause serious personal injury or property damage.
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WARNING:Batteries normally produce explosive gases which
can cause personal injury. Therefore, do not allow flames, sparks
or lighted substances to come near the battery. When working near the
battery, always shield your face and protect your eyes. Always provide
proper ventilation.
WARNING:When lifting a plastic-cased battery, excessive
pressure on the end walls could cause acid to flow through the
vent caps, resulting in personal injury and/or damage to the vehicle or
battery. Lift the battery with a battery carrier or with your hands on
opposite corners.
WARNING:Keep batteries out of reach of children. Batteries
contain sulfuric acid. Avoid contact with skin, eyes or clothing.
Shield your eyes when working near the battery to protect against
possible splashing of acid solution. In case of acid contact with skin or
eyes, flush immediately with water for a minimum of 15 minutes and
get prompt medical attention. If acid is swallowed, call a physician
immediately.
WARNING:Battery posts, terminals and related accessories
contain lead and lead compounds. Wash hands after handling.
Note:If your battery has a cover or shield, make sure to reinstall it after
cleaning or replacing the battery.
Note:Electrical or electronic accessories or components added to your
vehicle by an authorized dealer or the owner may adversely affect
battery performance and durability.
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