IC Bus CE Series, Operation And Maintenance Manual

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Maintenance
WARNING
To prevent property damage, personal injury, and
/ or death, pay strict attention to Brake Automatic
Slack Adjusters (ASAs) should not need to be
manually adjusted in service. ASAs should not
routinely have to be adjusted to correct excessive
push rod stroke. Excessive stroke indicates that
a problem exists with the foundation brake, ASA,
brake actuator, other brake system components
or their installation or adjustment.
In the event that a manual adjustment must be
made (although this should not be a common
practice),
a service appointment and full
foundation brake, ASA, and other brake system
component inspection must be conducted as
soon as possible to ensure the integrity of the
overall brake system prior to returning the vehicle
to service.
IC Busrecommends that you establish a regular schedule for
periodic cleaning, lubrication, adjustment and inspection of
brakes, based on the type of vehicle operation. It is difficult to
predetermine an exact maintenance interval (time or mileage),
since vehicles are used in a variety of applications and
conditions.
If you are uncertain of the proper schedule and
procedures for your vehicle, contact your IC Bus dealer.
Periodically, check the push rod travel or brake adjustment.
Check the push rod travel every service interval to determine if
adjustment is necessary. Brake chamber push rods on original
equipment chambers have a stroke indicator (an orange /
RED paint marker / rib near the base of the push rod) to aid
adjustment checks. If the push rod is clean and the brakes
require adjustment, the orange / RED marker can be seen
protruding from the chamber when the brakes are applied.
Check the slack adjusters to ensure proper operation of the
adjuster mechanism. Push rod travel should be at a minimum
without brakes dragging.
This inspection or adjustment should only be performed by
qualified service personnel and must be in accordance with
instructions provided by the IC CE Service Manual.
At regular intervals, inspect the entire brake system. Check:
• Rubber components for deterioration. Replacement
intervals vary according to environmental severity and time
in service.
• Condition of rotors / drums, brake chambers, and slack
adjusters.
• System for air leaks.
• Hose or pipes for corrosion, damage, deterioration.
• Operation of service and parking brakes.
Periodically, inspect the air brake chamber diaphragm, air
compressor, and air cleaner, and replace if unserviceable.
Refer to Section 2 - Vehicle Inspection Guide as well as the
LUBRICATION & MAINTENANCE INTERVALS CHART later in
this section.
Inspect brake lining at every maintenance interval. When brake
lining or blocks are worn to within 1.6 mm (1/16 in) of the rivets,
replace the brake lining.
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