2015 FORD F750 normal maintenance

3. Do not press the accelerator pedal, service brake pedal, or clutch
pedal (manual transmission).
4. The parking brake must remain set.
On average, depending on filter level and other factors, the process takes
20–30 minutes to complete. The DPF lamp turns off when the process is
complete. Repeat Steps 1–5, if parked regeneration is interrupted.
To Discontinue Parked Regeneration
Press any of the floor pedals to discontinue parked regeneration.
Maintenance and Service
The DPF can retain a relatively large amount of residual ash and provide
many miles and hours of maintenance-free operation. At some point,
generally beyond 150000 miles (240000 kilometers) or 5000 hours of
operation (whichever comes first), the DPF requires professional
cleaning to remove the accumulated ash.
The exact number of miles or hours of operation vary greatly depending
upon vehicle and engine loading and operating conditions, ash content of
the engine oil, and quality of the diesel fuel used in your truck. Adhering
to your engine manufacturer’s recommended oil and fuel specifications
maximizes the miles and hours of operation before a DPF professional
cleaning is required. See your engine manufacturer’s owner’s manual for
more details about recommended maintenance and service of your DPF.
Exhaust Outlet Assembly
WARNING:The normal operating temperature of the exhaust
system is very high. Never work around or attempt to repair any
part of the exhaust system until it has cooled. Failure to follow these
instructions may result in serious personal injury.
Note:Do not modify or remove this device. Modification of the system
or additions of aftermarket devices can reduce the effectiveness of the
system, as well as cause damage to the exhaust system or engine. Any
modifications may also invalidate the vehicle or engine warranty. See
your warranty information.
Note:Blocked or plugged holes or modification to, or removal of, the
outlet assembly could result in elevated exhaust temperatures that may
result in vehicle or property damage or personal injury.
The exhaust outlet assembly on your vehicle is a uniquely functioning
device that accompanies the DPF assembly. It can help control the
temperature of the exhaust during the DPF regeneration process.
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•DEF freezes below 12°F (-11°C). Your vehicle is equipped with an
automatic pre-heating system which allows the DEF system to
operate below 12°F (-11°C).
•Do not store the DEF bottle in your vehicle. If it leaks, it could cause
damage to interior components or release an ammonia odor inside
your vehicle.
•Store DEF out of direct sunlight and in temperatures between
23°F–68°F (-5°C–20°C).
NOISE EMISSIONS
In order to keep to the federal exterior noise regulations, your vehicle
may be equipped with noise emission items. Depending on your vehicle
configuration, it may have all or some of the following items:
Air Intake System:Inspect the air cleaner. Do not alter its location. Do
not alter inlet and outlet piping.
Body:Inspect wheel well splash shields, cab shields and under hood
insulation for deterioration, dislocation and orientation.
Cooling System:
•Inspect the fan for blade damage. If you find any damage, replace
with the recommended parts. Inspect for fan-to-shroud interference
and any damage to shroud, such as cracks and holes.
•Do not change fan ratio or alter fan spacer dimensions and positions.
•Inspect fan clutch for proper operation. Make sure the fan is
disengaged when cooling of the engine is not required.
•Inspect radiator shutters (if equipped) for proper operation. The
shutters should be open during normal operating temperatures.
Engine:Valve covers and block covers damp-out engine mechanical
noise. If they need replacing, make sure to replace them with the
recommended parts. Check for mechanical isolations.
Transmission Enclosure:Inspect for cracks, holes and tears. Clean any
deposits, such as oil, dirt and stones.
Exhaust System:
•Inspect for leaks at various joint connections and loose clamps.
•
Perform a visual inspection for cracks or holes in the muffler and tail pipe.
•Always use the recommended replacement parts.
•Do not change the tail pipe elbow or offset tail pipe orientation 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 theScheduled Maintenancechapter.
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A qualified service technician should perform air brake inspection and
adjustment or repairs keeping to the instructions in the service manual.
Cam Brakes - Automatic Slack Adjusters
WARNING:Do not manually adjust the automatic slack adjusters
to correct excessive push rod stroke as it may result in reduced
brake effectiveness and a vehicle crash. Excessive push rod stroke
indicates that a problem exists with the automatic adjuster, with the
installation of the adjuster, or with foundation brake components that
manual adjustment does not remedy. Seek service from a qualified
facility for excessive push rod stroke.
Standard air brakes (cam) are
equipped with automatic brake
adjusters. Automatic adjustment
occurs during brake applications.
Inspect brakes for proper
adjustment at the intervals listed in
theScheduled Maintenance
chapter.
Emergency Air Brake
WARNING:Do not continue to operate the vehicle with a failure
of one of the brake systems. Take the vehicle to your dealer for
service immediately.
All vehicles are equipped with a dual brake system. In the unlikely event
of a failure of one system, the second system functions for emergency
stopping. The brake pedal controls all these systems in the same manner
as for normal stops.
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Climate Control System
Have the air conditioning system checked each spring. The refrigerant
charge, cleanliness of the condenser-evaporator cores and belt condition
are essential to system performance.
When the air conditioning system is being used daily, remove the fresh
air filter (if equipped) once each season and check for things such as
dirt and lint. Replace the filter if necessary. Vehicles operating in
unusually dusty conditions may require more frequent filter inspection
and replacement.
Front Axle
Maintaining the front axle alignment to specifications is very important.
A qualified technician should check and maintain the alignment. Regular
inspections should include:
•Toe-in inspection and adjustment (if necessary), particularly with
radial tires.
•Checking for proper tightness of axle mounting U-bolt nuts, attaching
or mounting bolts and nuts.
•Checking the axle for damage, binding, worn parts and adequate
lubrication..
•Checking the kingpins for excessive wear. Also, perform this check
during other scheduled maintenance (such as tire rotation or service,
wheel bearing service and alignment). See the workshop manual for
proper procedures.
Toe-in
It is essential to maintain correct toe-in and tire pressure for optimum
tire wear.
Inspecting steer axle tires in the first 3000–10000 service miles
(5000–16000 service kilometers) generally shows if tires are wearing
normally.
Rapid outside shoulder wear on both tires indicates too much toe-in.
Rapid inside shoulder wear on both tires indicates too much toe-out.
In P&D-type service, there can be a left-to-right steer tire tread life
differential up to 40% depending on routes and other variables.
Follow the tire manufacturer’s recommended cold inflation pressure for
the tire size, load range (ply rating) and steer axle loading typical for
their operation (each steer axle tire equals
12steer axle loading).
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Desiccant air dryer:Inspect for moisture in the air system by opening
reservoirs, draincocks or valves and checking for presence of water. The
presence of small amounts of water due to condensation is normal and is
not an indication that the dryer is not functioning properly.
Replace or rebuild the desiccant cartridge when you determine that the
desiccant is contaminated and does not have adequate water absorption
capacity. The desiccant change interval may vary. A general
recommendation is to replace the desiccant every 12 months (yearly). If
experience has shown that extended or shortened life has resulted for a
particular installation, then the yearly interval can be increased or
decreased accordingly.
Draining the air brake reservoir:
Completely drain all the air brake
reservoirs daily by opening the
draincock at the ends of the tanks.
(Where accessible. Pull-chains are
used when the drains are undercab
or otherwise inaccessible.) Close the
draincock after draining. Manually
drain any air tanks equipped with
automatic moisture ejector valves,
as required, to maintain a dry air
system. Contact an authorized dealer if you are unsure of the air
reservoir locations or the draining procedure.
WARNING:Failure to drain air brake reservoirs can result in a
reduction or loss of braking ability due to fluid accumulation in
the reservoir and/or possible freeze-up during cold weather.
Hydraulic Brakes
Establish a regular schedule for periodic cleaning, lubrication and
adjustment inspection based on vehicle use. Exact maintenance intervals
are difficult to predetermine due to vehicle applications and operating
conditions. If you are uncertain of the proper schedule for your vehicle,
contact an authorized dealer.
Regular inspections should include:
•Checking the brake lining (every service interval). Establish
inspection intervals that provide for lining replacement before damage
to the disc occurs. Excessive lining wear may expose the backing
plate to the disc causing scoring of the disc faces. A qualified
technician should perform this inspection and keep to instructions
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Adding Engine Oil
Note:Do not remove the engine oil dipstick or the filler cap when the
engine is running.
Note:Do not add engine oil further than the MAX mark. Oil levels above
the MAX mark may cause engine damage.
Only use oils certified for gasoline engines by the
American Petroleum Institute (API). Oil with this
trademark symbol conforms to the current engine and
emission system protection standards and fuel
economy requirements of the International Lubricants
Specification Advisory Council (ILSAC), comprised of
U.S. and Japanese automobile manufacturers.
1. Check the engine oil level.
2. If the engine oil level is not within the normal range, add engine oil
that meets Ford specifications. SeeCapacities and Specifications
for more information. Remove the engine oil filler cap and use a
funnel to pour the engine oil into the opening.
3. Recheck the engine oil level. Make sure the oil level is not above the
normal operating range on the engine oil dipstick.
4. Put the dipstick back in completely.
5. Fully install the oil filler cap by turning it clockwise until it clicks or
stops turning.
ENGINE COOLANT CHECK
Diesel Engine
See your engine operator’s manual for information on checking and
adding engine coolant.
Fan Clutches
WARNING:Stay clear of the fan and fan area while the engine is
running or possible personal injury may occur.
Your vehicle’s cooling system is equipped with a viscous fan clutch
which:
•Helps control cooling, increases performance, improves fuel economy
and reduces noise.
•Bimetallic spring sensors control. Do not tamper with these sensors
as this may change their calibration or keep the fan clutch from
operating at all.
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Note:Do not use stop leak pellets or cooling system sealants or
additives as they can cause damage to the engine cooling and heating
systems. Your vehicle’s warranty does not cover this damage.
Note:During normal vehicle operation, the engine coolant may change
color from orange to pink or light red. As long as the engine coolant is
clear and uncontaminated, this color change does not indicate the engine
coolant has degraded nor does it require draining the engine coolant,
flushing the system, or replacing the engine coolant.
•DO NOT MIX different colors or types of coolant in your vehicle.
Make sure the correct coolant is used. Mixing of engine coolants may
harm your engine’s cooling system. The use of an improper coolant
may harm engine and cooling system components and may void the
warranty. Use prediluted engine coolant meeting the Ford
specification. See theCapacities and Specificationschapter for
more information.
•In case of emergency, you may add a large amount of water without
engine coolant in order to reach a vehicle service location. In this
instance, drain the cooling system, chemically clean it with Motorcraft
Premium Cooling System Flush, and refill it with engine coolant as
soon as possible. Water alone (without engine coolant) can cause
engine damage from corrosion, overheating or freezing.
•Do not use alcohol, methanol, brine or any engine coolants mixed
with alcohol or methanol antifreeze (coolant). Alcohol and other
liquids can cause engine damage from overheating or freezing.
•Do not add extra inhibitors or additives to the coolant. These can be
harmful and compromise the corrosion protection of the engine
coolant.
Unscrew the cap slowly. Any pressure escapes as you unscrew the cap.
Add prediluted engine coolant meeting the Ford specification. See
Capacities and Specificationsfor more information.
Whenever you add coolant, check the coolant level in the coolant
reservoir the next few times you drive your vehicle. If necessary, add
enough prediluted engine coolant to bring the coolant level to the proper
level.
Recycled Engine Coolant
Ford Motor Company does not recommend the use of recycled engine
coolant since a Ford-approved recycling process is not yet available.
Dispose of used engine coolant in an appropriate manner. Follow your
community’s regulations and standards for recycling and disposing of
automotive fluids.
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When Fail-Safe Mode Turns On
WARNING:Never remove the coolant reservoir cap while the
engine is running or hot.
Note:Driving your vehicle without repairing the engine problem
increases the chance of engine damage. Take your vehicle to an
authorized dealer as soon as possible.
You have limited engine power when in the fail-safe mode, so drive your
vehicle with caution. Your vehicle is not able to maintain high-speed
operation and the engine runs rough. Remember that the engine is
capable of completely shutting down automatically to prevent engine
damage; therefore:
1. Pull off the road as soon as safely possible and turn off the engine.
2. Have your vehicle taken to an authorized dealer.
3. If this is not possible, wait a short period for the engine to cool.
4. Check the coolant level and replenish if low.
5. Restart the engine and take your vehicle to an authorized dealer.
TRANSMISSION FLUID CHECK
Allison Automatic Transmissions
See yourAllison Automatic Transmission Operator’s Manualfor
scheduled transmission fluid checks and change intervals. Your
transmission does not consume fluid. However, you should check the
fluid level if the transmission is not working properly. For example, if the
transmission slips or shifts slowly or if you notice some sign of fluid
leakage.
Automatic transmission fluid expands when warmed. To obtain an
accurate fluid check, drive your vehicle until it is at normal operating
temperature, approximately 20 miles (30 kilometers). Verify that the
transmission fluid temperature gauge, located on the instrument cluster,
is within the normal range.
1. Drive your vehicle 20 miles (30 kilometers) or until it reaches normal
operating temperature.
2. Park your vehicle on a level surface and engage the parking brake.
3. With the engine running, parking brake engaged and your foot on the
brake pedal, move the gearshift lever through all of the gear ranges.
Allow sufficient time for each gear to engage.
4. Latch the gearshift lever in positionNorPand leave the engine
running.
5. Remove the dipstick, wiping it clean with a clean, dry, lint-free rag.
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