2006 FORD F750 brakes

interval to determine if adjustment is necessary. Brake chamber push
rods on original equipment chambers now incorporate a stroke indicator
to aid in adjustment checks; an orange paint marker near the base of the
push rod. If the push rod is clean and the brakes require adjustment, the
orange marker can be seen protruding from the chamber when the
brakes are applied.
Slack adjusters should also be checked to ensure proper operation of the
adjuster mechanism at the six-month interval. Push rod travel should be
kept at a minimum without the brakes dragging.
Inspect the brake lining every maintenance interval. When brake lining or
blocks are worn to within 1/16 inch (1.6 mm) of rivets, brake lining must
be replaced. This inspection or adjustment should only be performed by
a qualified technician and must be in accordance with instructions
provided by the service manual.
Do not back off or disconnect the front brakes so that they are less
effective, letting the rear brakes do all the stopping of the vehicle. Do
not overlook the brakes on the trailer, either. Brake condition on the
trailer is just as important as the tractor. Proper brake balance on trucks
and tractor-trailers is essential for effective braking.
Once a year, the entire brake system must be inspected. Check the
following:
•Any rubber as it may deteriorate whenever used. Rubber brake
components should be inspected by a qualified technician and
replaced as necessary. Replacement intervals vary according to the
severity and length of vehicle service.
•Condition of brake drums, brake chambers and slack adjusters.
•System for air leaks.
•Hose or pipes for rust, damage and deterioration.
•Operation of service and parking brakes.
Some parts such as air brake chamber diaphragm, air compressor and air
cleaner should be inspected periodically and replaced if considered
unserviceable.
Air brakes - air dryer
Performance of desiccant or after-cooler type air dryers is dependent on
climatic conditions in which your vehicle is operating. 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.
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Air brakes - desiccant air dryer
Inspect for moisture in the air system by opening reservoirs, drain cocks
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.
Hydraulic brakes - general inspection and adjustment
A regular schedule for periodic cleaning, lubrication, adjustment and
inspection should be established based on the type of vehicle operation.
It is difficult to predetermine an exact maintenance interval (time or
mileage), since vehicles will be used in a wide variety of applications and
conditions. If you are uncertain of the proper schedule and procedures
for your vehicle, contact your dealer.
Inspect the brake lining every maintenance 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.
Note:Hydraulic brake system are power assisted. Braking capabilities
will be greatly reduced without engine assist.
Hydraulic brakes - fluid level
Fluid 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.
Note:If brake fluid requires attention to maintain a proper master
cylinder level, this is an indication of either severe operation (pad wear)
or fluid system leakage. A more frequent and thorough brake inspection
will be required.
Hydraulic brakes - fluid precautions
The HydroMax brake system consists of two completely separate
hydraulic systems operating with two different and incompatible fluids;
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power steering fluid and hydraulic brake fluid. Failure to observe
precautions preventing the contamination of either system with fluid
from the other will result in swelling and deterioration of rubber parts
leading to reduced brake performance and eventual brake failure.
To avoid fluid contamination, the following should always be observed:
1. Use only fluids specified (or equivalent) and properly identified.
2. Add fluids only to the following locations:
•Power steering fluid to the power steering fluid pump reservoir
•Brake fluid to the brake master cylinder
Hydraulic brakes - brake lines, hoses and fittings
Inspect these components every 4,000 miles (6,000 km).
•Check lines for kinks, dents, corrosion or rupture.
•Check 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.
•Examine all connections for leaks.
•Repair or replace brake line tubes, hoses or fittings as required.
Driveline parking brake
Parking brake adjustment should only be performed by a qualified
technician, and in accordance with the instructions in the service
manual.
Use wheel chocks and exercise caution when inspecting under
the vehicle. A vehicle roll-away could result in property damage,
personal injury or death.
Catalytic converter
If your diesel engine is equipped with a catalytic converter, it is
important to review the maintenance schedule to ensure proper
functioning of the catalytic converter. Also, take precautions not to
damage the catalytic converter when servicing your engine or storing
your vehicle.
Note:If your vehicle is equipped with a catalytic converter/muffler,do
notblend waste oil with Diesel fuel. Operate only on low sulfur (less
than 500 parts per million sulfur) diesel fuel with a cetane value of 45 or
higher.
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BRAKE FLUID
Check and refill the HydroMax
brake fluid reservoir using the
following procedure. Refer to the
Scheduled Maintenance Guide
chapter 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;
the level should be at the bottom of
the fill ports.
3. If necessary, add brake fluid from
a clean unopened container until the
level reaches the bottom of the fill
ports. Do not fill above this line.
4. Use only a DOT 3 brake fluid certified to meet manufacturer
specifications. Refer toLubricant specificationsin this chapter.
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.
If you use a brake fluid that is not DOT 3, you will cause
permanent damage to your brakes.
Do not let the reservoir for the master cylinder run dry. This
may cause the brakes to fail.
BATTERY
Your vehicle is equipped with two maintenance-free batteries which are
mounted in a covered tray and located on the left frame rail. The
covered battery tray, depending upon application, may also have one or
two steps attached.
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Draining and refilling the rear axle lubricant
1. Drain the rear axle while the lubricant is warm.
2. Park the vehicle on level ground.
3. Set the parking brake and shift into N (Neutral) (automatic
transmission) or 1 (First) (manual transmission) and turn the engine off.
4. Clean any dirt from around the rear axle filler and drain plugs.
5. Remove the filler and drain plugs and 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 enough lubricant through the filler plug opening so that the
lubricant level is up to the bottom of the opening.
8. Clean and install the filler plug securely.
WHEELS
General
Wheel bearings should be inspected, lubricated and adjusted at regular
intervals. This is especially important if operating in deep sand, mud, or
water. Refer toLubricant specificationsin this chapter.
When installing wheel balance weights, they must be mounted on the
dome-side of the wheel only. Failure to do so may result in loss of wheel
weight and/or damage to brakes or wheels.
Important:Remember to replace the wheel air valves when the road
tires are replaced at the end of their useful life.
Oil lubricated front wheel bearings
During normal vehicle duty cycle, the lube and air inside the hub/wheel
cavity expands and if not vented, causes pressure build-up that could
cause accelerated seal wear.
There are two venting methods:
•a slit or small hole in the rubber check vent or
•the window
You can use either of these methods to prevent pressure build-up.
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Information Decal. The following services are to be performed at
scheduled intervals because they are considered essential to the life and
performance of your vehicle. Ford recommends that you perform
maintenance on all designated items to achieve best vehicle operation.
Maintenance intervals are provided for three types of general vehicle
environments: On-Highway, City and Severe Service. In all applications,
the actual interval is determined by monitoring kilometers (miles) and
time and when the engine is due for an oil change. When the engine oil
change is required prior to the truck lubrication interval, it is
recommended that the lubrication be performed at the same time in
order to reduce your vehicle’s time out of service.
•On-Highway:60,000 miles (96,000 km) or more annually.
•City:60,000 miles (96,000 km) or less annually.
•Severe Service:20,000 miles (32,000 km) or less annually on/off
road in dirty conditions.
Scheduled maintenance beyond 100,000 miles (160,000 km) should be
continued as before 100,000 miles (160,000 km).
AIR BRAKE ADJUSTMENT
Failure to maintain proper air brake adjustment can result in
reduction or loss of braking ability.
Air brake inspection and adjustment should be performed by a qualified
service technician in accordance with the instructions in the Ford Truck
Service Manual.
Cam brakes - automatic slack adjusters
Inspect standard air brakes equipped with automatic slack adjusters for
proper brake adjustment every four months or 20,000 miles (32,000 km)
whichever occurs first.
However, more frequent inspection is required if your vehicle’s brakes
are subjected to heavy use or adverse operating conditions such as:
•Frequent brake applications while fully loaded.
•Operation on hilly or mountainous terrain.
•Frequent operation on dirt, gravel or mud.
Some aftermarket brake linings also require more frequent inspections.
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Daily owner checks
EngineCheck the air filter restriction gauge.
Check the engine oil.
Inspect the coolant level (6.0L Power
Stroke engine; Caterpillar and
Cummins engines, refer to the
Owner’s Manual).
Brake systemCheck the air brake system reservoir
automatic drain valve operation.
Drain the air brake system reservoir -
manual valve.
Transmission systemVisually check the automatic
transmission for fluid leakage.
Steering systemCheck the power steering pump fluid
level and check the system for leaks.
Check the entire vehicle for evidence
of fluid leaks.
U.S. Department of
Transportation, Federal
Highway Administration
requirements (ensure that
the entire system is
functioning properly)Check the service brakes.
Check the parking brake.
Check the steering mechanism.
Check the lighting devices and
reflectors.
Check the tires.
Check the horn.
Check the windshield wipers.
Check the rear vision mirrors.
Check the wheels and rims.
Check the emergency equipment.
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Check every oil change (Oil change interval for the 6.0L Power
Stroke engine is 10,000 miles [16,000 km]; (refer to the
Caterpillar and Cummins service manuals for instructions and
information)
Engine systemCheck the engine cooling system -
hoses, clamps and protection*.
Inspect the drive belts.
Exhaust systemInspect the entire exhaust system
(including the inlet pipe(s),
muffler(s), outlet pipe(s), clamps and
fasteners) for holes, leakage,
breakage, corrosive damage and
separation from other components.
Adjust, service or replace with the
same or the equivalent part. (Also a
noise emission control service).
Suspension systemTighten the front and rear spring
U-bolts to the specified torque.
Driveline and rear axle
systemLubricate the U-joints and the slip
yoke.
Brake systemLube the air brake foot control valve,
hinge and roller.
Inspect the drum brake linings
through the inspection holes.
Lubricate the brake camshafts (air
brakes only).
Lubricate the brake slack adjuster (air
brakes only).
Lubricate rear caliper slide rails.
Inspect the disc brake pads and the
piston boots (hydraulic brakes only).
Clutch systemLubricate the clutch release cross
shaft and all linkages.
Check the clutch fluid.
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