Lumina V6-3.1L VIN J (2000)
The above procedure will cause the following conditions:
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The pistons on the ABS brake modulator will be positioned very close to the top of the modulator bore.
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The brake bleeding procedure becomes simplified. Refer to Hydraulic Brake System Bleeding.
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 Service Precautions.
3. Install four Torx head screws (4).
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Tighten the Toe head screws to 4.5 Nm (40 inch lbs.).
4. Install the gear cover (3) onto the modulator/brake master cylinder assembly. Refer to Modulator Gear Cover Replacement.
Brake Modulator Gear Replacement
Removal Procedure
Caution: The modulator drive gears are under spring load and will turn during disassembly. After removing brake modulator drive gear cover,
exercise extreme care not to place fingers into the gear set, since fingers can be pinched by rotating gears.
Notice: Do not allow gear to turn while removing the retaining nut, since the modulator piston can hit the top of the modulator bore, damaging the
piston. Place a screwdriver through the holes in the gears (not between the gears) into the recessed hole in the modulator base. This will prevent the
gear from turning, aiding in gear removal.
