ABS Motor Pack Replacement

REMOVAL PROCEDURE

IMPORTANT: If you were directed to disassemble the modulator/master cylinder because an ABS or ETS hydraulic functional test did not pass, perform the Automated ABS brake motor pack Diagnosis Test. The Automated ABS brake motor pack Diagnosis Test isolates the motor pack or the brake modulator. No repair of the motor pack is authorized. Replace as an assembly.





1. Remove the gear cover (3).

IMPORTANT: Use care when handling the motor pack to avoid damaging the motor pack connector. Make sure brake fluid does not accidentally intrude into the motor pack. Brake fluid in the motor pack may cause a premature failure of the motor pack.

IMPORTANT: Use care when handling the motor packs. Replace the motor packs if the motor packs are dropped or damaged during handling.

2. Remove the Torx head screws (5) that attach the motor pack (1).
3. Remove the motor pack assembly (1).

INSTALLATION PROCEDURE





1. With the modulator positioned upside down, rotate each ABS brake modulator gear counterclockwise until movement stops. The above procedure will cause the following conditions:
^ The pistons on the ABS brake modulator will be positioned very close to the top of the modulator bore.
^ The brake bleeding procedure becomes simplified.

IMPORTANT: Use care when handling the motor packs. Replace the motor packs if the motor packs are dropped or damaged during handling. Align each of the three motor pack pinions with the modulator gears.





2. Install the motor pack (1) to the modulator assembly (6).

NOTICE: Refer to Fastener Notice in General Information.

3. Install Torx head screws (4).
^ Tighten the Torx head screws to 4.5 Nm (40 inch lbs.).
4. Install the gear cover (3) onto the modulator/brake master cylinder assembly.
5. Perform Motor Rehome Procedure.
6. Perform the A Diagnostic System Check - ABS.