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Some parts such as air brake chamber diaphragm, air compressor and air
cleaner should be inspected periodically and replaced if considered
unserviceable.
Air dryer:Climactic conditions affect performance of desiccant or
after-cooler type air dryers. Maintenance schedules must be established
for each specific operation.
The use of an air dryer on a vehicle does not eliminate the need to
periodically drain the air reservoirs.
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
should not be considered as an indication that the dryer is not
functioning properly.
The desiccant cartridge should be replaced or rebuilt when it has been
determined that the desiccant is contaminated and does not have
adequate water absorption capacity. The desiccant change interval may
vary. It is generally recommended that the desiccant be replaced 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. Air tanks
equipped with automatic moisture
ejector valves may also be drained
manually as required to maintain a
dry air system. Contact your 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.
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Hydraulic Brakes
Establish a regular schedule for periodic cleaning, lubrication and
adjustment inspection based on vehicle use. Exact maintenance intervals
are difficult to predetermine since vehicles are used in a wide variety of
applications and conditions. If you are uncertain of the proper schedule
for your vehicle, contact your 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. This inspection
should be performed by a qualified technician and must be in
accordance with instructions provided by the service manual.
Hydraulic brake systems are power-assisted. Braking capabilities are
greatly reduced without engine assist.
•proper fluid level. The level should be at the bottom edge of the ring
on each reservoir fill port. Do not fill the master cylinder to the top of
the reservoir. If fluid level requires attention to maintain a proper
master cylinder level, this is an indication of either severe operation
(pad wear) or fluid leakage. A more frequent and thorough brake
inspection is required.
•brake lines, hoses and fittings. Repair or replace brake line tubes,
hoses or fittings as required. Inspect these components every
4000 miles (6000 kilometers):
•Lines for kinks, dents, corrosion or rupture.
•Hoses for abrasions, kinks, soft spots or rupture, collapse, cracks,
twists or loose frame supports. When replacing a hose, be sure
there is adequate clearance to the hose to avoid an abrasion to the
new hose.
•All connections for leaks.
Driveline Parking Brake
WARNING:Use wheel chocks and exercise caution when
inspecting under the vehicle. A vehicle roll-away could result in
property damage, personal injury or death.
Parking brake adjustment should only be performed by a qualified
technician, and in accordance with the instructions in the service
manual.
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Steering System
WARNING:Failure to maintain the steering system in proper
condition can cause reduced steering ability resulting in property
damage, personal injury or death.
Note:Have any steering problems immediately corrected by a qualified
service technician.
Ask your service technician to examine the steering mechanism. Only
minor adjustments may be necessary. Regular inspections should include:
•checking the tie rod, drag link end clamp bolts and ball joints for
proper tightness.
•checking for installation and spread of cotter pins and tightness of
nuts at both ends of the tie rod and drag link.
•checking that the pitman arm (steering arm at steering gear)
mounting is tight and locked. Check system for leaks or hose chafing.
Repair immediately, if necessary.
•maintaining proper steering gear and power steering pump lubricant
levels.
•checking steering column joint bolts and steering linkage, particularly
for body-to-chassis clearance.
Steering Column Joint Bolts
As a good maintenance practice, it is recommended that steering column
joint bolts be checked for tightness every 60000 miles (96000 kilometers)
or annually, whichever occurs first. DO NOT OVERTIGHTEN.
Hydraulic System
Whenever the power steering’s hydraulic system has been drained and
refilled for any reason, air must be bled from the system before returning
the vehicle to service. Failure to properly bleed the hydraulic system can
result in degradation of power system performance.
Consult your dealer who is aware of the proper procedures for filling and
bleeding the system.
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Catalytic Converter (Diesel Engine)
Note:If your vehicle is equipped with a catalytic converter/muffler,do
notblend waste oil with diesel fuel. Operate only on ultra low sulfur
(less than 15 parts per million sulfur) diesel fuel with a cetane value of
45 or higher.
If your diesel engine is equipped with a catalytic converter, it is
important to review the maintenance schedule to make sure proper
functioning of the catalytic converter. Also, take precautions not to
damage the catalytic converter when servicing your engine or storing
your vehicle.
Diesel Exhaust Fluid (DEF), Diesel Particulate Filter (DPF) and
Select Catalyst Reduction (SCR) System
See your engine operator’s manual for information regarding DEF, DPF
and SCR system service.
Air Induction System
WARNING:When performing maintenance to any turbocharged
engine with engine air inlet piping disconnected, keep loose
clothing, jewelry and long hair away from the engine air inlet piping.
A turbocharger compressor air inlet protective shield should be
installed over the turbocharger air inlet to reduce the risk of personal
injury or death.
Perform a complete inspection of the air induction system annually.
In areas where road salt is used, disassemble the joints of each aluminum
component and inspect for salt build-up and presence of chlorine that
can cause aluminum particles to flake off and enter the engine
combustion chambers. If evidence of corrosion is found (usually at the
pipe connections), use a wire brush to clean the inside of the pipes and
inside the rubber hoses.
If the intake pipes are pitted at the joint ends, use Motorcraft® Silicone
Gasket and Sealant TA-30 to seal the joints. Make sure no excess
material is on the inside of the pipes that can be pulled into the engine.
If the service condition of the pipes, hoses or clamps is questionable,
replace the defective part(s).
Make sure all dust and debris has been cleaned out of the pipes and
couplings with a clean, damp rag prior to reassembly.
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Chassis-mounted Charge Air Cooler
Visually inspect the core assembly for debris and clogging of external fins
with the engine off. 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 Motorcraft® Silicone Gasket
and Sealant TA-30 to seal joints against leakage.
•Check for loose hoses and clamps.
•Check for ruptured or collapsed hoses.
•Check air cleaner housing for cracks.
Suspension Inspection
Note:Do not adjust air suspension height to any setting other than the
specified setting. Altering the height setting changes the driveline angle
and may result in unwarrantable component damage, such as
transmission component damage.
Verify drive axle air suspension height and height control valve
performance at engine oil change intervals.
Periodically check:
•Condition of spring leaves for evidence of fatigue, bending or
breakage.
•Condition of suspension mounting brackets and bushings.
•Torque rod mounting fasteners for tightness.
•For proper suspension alignment. This must be maintained at all
times.
•U-bolts. After the chassis has been operating under load for
1000 miles (1600 kilometers) or six months (whichever comes first),
the U-bolt nuts must be re-torqued. The U-bolt nuts must be
re-torqued every 36000 miles (60000 kilometers) thereafter. The
U-bolt and nut threads and seats should be cleaned and lubricated to
make sure a like new condition when re-torquing.
Note:SeeSpring U-bolt checklater in this chapter.
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Supporting Your Vehicle for Service
WARNING: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.
Prepare the vehicle for service repairs 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 is being serviced, support the vehicle with floor
stands under the frame side-members, preferably between the axles.
Frame and Tow Hooks
Your vehicle’s chassis is manufactured with frame rails of either HSLA
steel or heat-treated steel. Each must be handled in a specific manner to
make sure maximum service life. Consult the service manual or your
dealer before attempting frame repair or modification.
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.
OPENING AND CLOSING THE HOOD
WARNING:The parking brake must be fully set before opening
the hood or possible personal injury may occur.
WARNING:To reduce the risk of the possibility of personal
injury, never stand beneath the hood when it is being raised or
lowered.
WARNING:If you must leave the engine running while checking
under the hood, do not allow any loose clothing, jewelry, hair or
other items to get near moving engine components or possible personal
injury may occur.
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The hood and fenders are held in position by a latch located on each
fender.
Before opening the hood, set the parking brake, shift into positionN
(automatic transmission) or first (manual transmission) and turn the
engine off.
To open the hood:
1. Lift up on the bottom of each latch.
2. Pull the bottom of each latch away from the fender.
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3. Tilt the hood forward until stopped by the retaining cables.
To lower the hood:
1. Push the hood rearward at the top center of the hood above the
grille until closed.
2. Engage the latch on each fender.
3. Push down on the bottom of each latch until locked.
ENGINE OIL DIPSTICK
Diesel Engine
See your engine operator’s manual for information on the engine oil
dipstick.
Gasoline Engine
A. MIN
B. MAX
AB
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ENGINE OIL CHECK
Diesel Engine
See your engine operator’s manual for information on checking and
adding engine oil as well as engine oil specifications, capacities and
required maintenance.
Gasoline Engine
Checking the Engine Oil
1. Make sure the vehicle is on level ground.
2. Turn the engine off and wait 15 minutes for the oil to drain into the
oil pan.
3. Set the parking brake and make sure the gearshift is securely latched
in positionP.
4. Open the hood. Protect yourself from engine heat.
5. Locate and carefully remove the engine oil level dipstick.
6. Wipe the dipstick clean. Insert the dipstick fully, then remove it
again.
•If the oil level is between the lower and upper holes, the oil level
is acceptable. DO NOT ADD OIL.
•If the oil level is below the lower hole, add enough oil to raise the
level within the lower and upper holes.
•Oil levels above the upper hole may cause engine damage. Some
oil must be removed from the engine by an authorized dealer.
7. Put the dipstick back in and make sure it is fully seated.
Adding Engine Oil
Note:Do not remove the engine oil level 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). An 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.
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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 level dipstick.
4. Install the dipstick and make sure it is fully seated.
5. Fully install the engine oil filler cap by turning the filler cap
clockwise until three clicks are heard or until the cap is fully seated.
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.
•Is controlled by bimetallic spring sensors. Do not tamper with these
sensors as this may change their calibration or keep the fan clutch
from operating at all.
Gasoline Engine
Checking the Engine Coolant
The concentration and level of engine coolant should be checked at the
intervals listed in theScheduled Maintenancechapter.
Note:Make sure that the level is between the MIN and MAX marks on
the coolant reservoir.
Note:Coolant expands when it is hot. The level may extend beyond the
MAX mark.
If the level is at the MIN mark, add coolant immediately. SeeAdding
engine coolantin this section.
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