Motor Pack

NOTE: This article has been updated with TSB 53-50-08

CAUTION: To help avoid personal injury, due to a retained load on the ABS hydraulic modulator, the gear tension relief function of the Tech 1 must be performed prior to removal of the ABS hydraulic modulator/master cylinder assembly. Refer to "Gear Tension Relief Sequence".

MOTOR PACK

Hydraulic Modulator/Master Cylinder Assembly:

DISASSEMBLE
1. Perform gear tension relief procedure. Refer to "Gear Tension Relief Sequence".
2. Remove air cleaner duct clamps and electrical connection.
3. Remove Battery from vehicle.
4. Remove relay center clip and position aside.
5. Remove air box assembly.
6. Disconnect motor pack electrical connectors.

IMPORTANT: Use care when handling motor pack to ensure motor pack connector is not damaged, or accidental intrusion of brake fluid into the motor pack does not occur. This may result in a premature failure of the motor pack. Take care in handling the motor pack. If dropped or damaged during handling, the motor pack must be replaced.

7. Remove gear cover screws.
8. Remove screws holding motor pack electrical connectors.
9. Remove motor pack assembly.

IMPORTANT
^ It is necessary to slightly bend brake pipes out of the way to allow for removal.

ASSEMBLE

Gear Positioning:

^ With the hydraulic modulator upside down, and the gears facing you, rotate each hydraulic modulator gear counterclockwise until movement stops. This procedure will position the pistons very close to the top of the hydraulic modulator bore.

1. Install motor pack to modulator assembly.
2. Install screws to motor pack (2).
3. Install gear cover screws.
4. Connect motor pack electrical connectors.
5. Install air box assembly.
6. Install relay center clip.
7. Install battery to vehicle.
8. Install air cleaner duct clamps and electrical connection.
9. Perform gear tension re-home procedure.