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3 Brake replacement
A – Brake Removal
Park the vehicle on hard ground and chock the road wheels.
Apply air pressure to release the park brake and wind off the
spring actuator retraction screw (where appropriate). Jack up the
axle and fit suitable axle stands securely. Remove the road wheels
and exhaust all air from the system. Remove any dirt from the
Brake assembly, ensure the rubber dust excluders are not
damaged.
CAUTION
Never use an airline to blow dust from the brake/rotor area.
If inhaled any form of dust can at best be an irritant, at
worst dangerous. When ever possible remove dry brake dust
with a vacuum brush. Alternatively wipe the areas with a
damp cloth, never try to accelerate drying time by using an
airline.
The brake assembly may be fitted with the following wear
indicator, which needs to be disconnected before removing the
Brake.
PWWI (Pad Wear Warning Indicator)
Disconnect the PWWI plug where fitted.
Remove the air actuator from the Brake housing by removing the
2 nuts. - Fig. 16
Cover the exposed air actuator mounting aperture with adhesive
tape to prevent debris etc. entering the housing. - Fig. 17
Remove the pads as described in section 2 "Pad replacement".
The Brake can now be removed from the axle by removing the
carrier mounting screws following the vehicle manufacturers
instructions.
NOTE
: The Brake assembly is heavy, approximately 34kg (75lbs).
Ensure you have the help of an assistant and the weight of the
Brake is supported when removing the fixing screws to avoid
possible damage to the threads.
22
ArvinMeritor Air Disc Brake ELSA 195
Fig. 16
Fig. 17
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