How do you remove the ABS modulator

Tiny
FIST548
  • MEMBER
  • 1998 CHEVROLET MALIBU

the hole for the brake line is stripped and I need to remove the abs modulater and so far can't figure out how to remove the abs modulator. Would rather fix the striped hole but no luck on that one either.

any advice would be appreciated.
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Friday, February 26th, 2010 AT 2:08 PM

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Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
REMOVAL PROCEDURE
1. Remove the brake modulator assembly.
2. Remove the Torx head screws (5) attaching the gear cover (4).
3. Remove the gear cover (4).
4. Remove the four Torx head screws (6) attaching the motor pack (1) to the brake modulator (2).
5. Remove the motor pack (1) from the brake modulator (2).
6. Remove the Torx head screws that retain the proportioning valve.
7. Remove the proportioning valve.

INSTALLATION PROCEDURE

IMPORTANT: When replacing the ABS brake modulator, install the three gears in the same location on the replacement brake modulator. Refer to "Brake Modulator Gear Replacement".

No repair of the ABS brake modulator is authorized. Replace the ABS brake modulator as an assembly.

1. Install the proportioning valve to the hydraulic modulator.
2. Install the Torx head screws that retain the proportioning valve to the hydraulic modulator.
- Tighten the Torx head screws to 12 Nm (106 in. Lbs.).

IMPORTANT: A new gasket MUST be used when installing the Proportioning Valve.

3. With the ABS brake modulator positioned upside down, and the gears facing you, rotate each ABS brake modulator gear clockwise until movement stops.

The procedure causes the following conditions:
- The pistons are positioned very close to the top of the modulator bore.
- The brake bleeding procedure is simplified.

4. Install the ABS brake motor pack (1) onto the brake modulator assembly (2).
5. Install the four Torx head screws (6) that retain the motor pack (1) to the brake modulator (2).
- Tighten the four Torx head screws to 5 Nm (44 in. Lbs.).

6. Install the gear cover (4) to the brake modulator assembly (2).
7. Install the Torx head screws (5) that retain the gear cover (4).
- Tighten the Torx head screws to 4 Nm (36 in. Lbs.).

8. Install the brake modulator assembly.
9. Perform the Diagnostic System Check.

See diagram below
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Monday, March 29th, 2021 AT 2:41 PM

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