
Group 59 Anti-Lock Brake System (Bendix) General
4 Clean brake parts and assemblies in the open air.
During disassembly, carefully place all parts on the
floor to avoid getting dust into the air. Use an indus-
trial vacuum cleaner with a HEPA filter system to
clean dust from the brake drums, torque plate (spi-
der), and other brake parts. After using the vacuum,
remove any remaining dust with a rag soaked in wa-
ter and wrung until nearly dry.
5 DO NOT grind or machine the brake linings.
6 Properly clean the work area. Never use com-
pressed air or dry sweeping to clean the work area.
Use an industrial vacuum with a HEPA filter and
rags soaked in water and wrung until nearly dry.
Dispose of rags with care to avoid getting dust into
the air. Use an approved respirator when emptying
vacuum cleaners and handling rags.
7 After working on brakes, workers should wash their
hands before eating, drinking, or smoking. Clothes
worn during brake maintenance should not be worn
outside the maintenance area. Vacuum work clothes
after use and launder them separately, without shak-
ing, to prevent fiber dust from getting into the air.
8 Material Safety Data Sheets (MSDS) on brake lin-
ings, as required by OSHA, are available from the
brake lining manufacturer.
Do not work under or around a vehicle unless the
wheels are securely chocked. Failure to chock the
wheels can result in the vehicle rolling, which can
cause serious bodily injury or death.
Do not work under a vehicle supported only by jacks.
Jacks can slip out from under the truck or fall over,
causing personal injury or death. Always use jack
stands under the truck.
If placing a vehicle with Traction Control System
(TCS) on jacks when servicing, the ABS must be dis-
abled. If the ABS is not disabled and one of the
wheels starts to spin, the TCS will compensate and
the vehicle may come off the jack. The ABS should be
disabled by disconnecting the ABS connector at the
pass-through to the cab.
Components in any air brake system may be under
high pressure. Before disconnecting any air lines, be
sure all air pressure is released. Failure to do so may
result in the sudden, possibly explosive release of air
pressure, causing parts to strike with considerable
force, resulting in serious personal injury.
CAUTION
It is best to avoid welding on a truck or tractor or on
components attached to it. Voltage and current spikes
associated with welding can damage the vehicle’s
electrical system. If welding must be performed on
any structure on or in contact with the vehicle, follow
the recommendations below:
•
Disconnect both negative (-) and positive (+) battery
cables. Ensure the cables remain separated and are
not in contact with the vehicle chassis.
•
Disconnect the electrical harnesses for engine, ABS
ECUs and all other ECUs on the vehicle.
•
Disconnect the main vehicle harness at the pass
through to the cab.
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