Chevrolet Silverado 4500HD 2022 Manual page 355

354 Service and Maintenance
Follow these precautions:
Always wear a respirator approved by
National Institute for Occupational Safety
and Health (NIOSH) or Mine Safety
Appliances (MSA) during all brake service
procedures. Wear the respirator from
removal of the wheels through assembly.
Never use compressed air or dry brushing
to clean brake parts or assemblies.
Clean brake parts and assemblies in the
open air. During disassembly, carefully
place all parts on the floor to prevent
getting dust into the air. Use an industrial
vacuum cleaner with a HEPA filter system
to clean dust from the brake drums,
backing plates, and other brake parts.
After using the vacuum, remove any
remaining dust with a rag soaked in
water and wrung until nearly dry.
Never use compressed air or dry
sweeping to clean the work area. Use an
industrial vacuum cleaner with a HEPA
filter system and rags soaked in water
and wrung until nearly dry. Dispose of
used rags with care to prevent getting
dust into the air. Use an approved
respirator when emptying vacuum
cleaners and handling used rags.
Wash your hands before eating, drinking,
or smoking. Vacuum your work clothes
after use, and then launder them
separately, without shaking them, to
prevent fiber dust from getting into
the air.
Hydraulic Brakes
Brake Inspection and Adjustment
This inspection or adjustment should only be
performed by qualified service personnel and
must be in accordance with instructions
provided in the service manual.
Establish a regular schedule for periodic
cleaning, lubrication, and inspection, 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. See Maintenance Schedule
0 330 and
Owner Checks and Services (Inspection Guide)
0 337.
On a periodic basis of at least once per year,
inspect the entire brake system for:
The proper operation of the service and
parking brakes.
The condition of the service brake discs,
calipers, and ABS exciter teeth.
The condition of the parking brake shoe
and lining.
Hydraulic fluid leaks.
Hose or pipe damage.
The condition of the ABS wheel speed
sensors and wiring.
Proper ABS wheel speed sensor-to-exciter
teeth gap.
Inspect brake lining at every maintenance
interval. During severe service operations or
prolonged periods of stop-and-go operation,
the brakes may require more frequent
inspection. Establish inspection intervals that
provide for lining replacement before
damage to the disc occurs. Excessive lining
wear may allow the metal brake shoe to
damage the brake disc.
Brake Lines, Hoses, and Fittings
Check lines for kinks, dents, corrosion,
or ruptures.
Check hoses for abrasion, kinks, soft
spots, ruptures, collapse, cracks, twists,
or loose frame supports. When replacing
a hose, be sure there is enough clearance
to prevent the new hose from rubbing
against other components.
Examine all connections for leaks.