Clutch Master Cylinder Replacement

Removal Procedure

Caution: Refer to Battery Disconnect Caution in Service Precautions.





1. Disconnect the negative battery cable.
2. Remove the reservoir cap and take out the fluid.

Notice: Brake fluid will damage electrical connections and painted surfaces. Use shop cloths, suitable containers, and fender covers to prevent brake fluid from contacting these areas. Always re-seal and wipe off brake fluid containers to prevent spills.

3. Remove the push rod clevis pin (4) and the push rod clevis retainer (5).
4. Remove the master cylinder nut from the inside of the vehicle.





5. Disconnect the clutch fluid pipe (1) from the master cylinder.





6. Remove the master cylinder bolt (6).
7. Remove the master cylinder assembly (1) and the gasket (2).


Disassemble Procedure





1. Unscrew the top portion of the clutch master cylinder push rod (4).
2. Remove the nut (5).
3. Remove the boot (6).





4. Remove the C-clip (7).
5. Remove the push rod (9) and washer (8).
6. Remove the clutch master cylinder piston (10).
7. Inspect all parts for wear or damage.
8. Replace if necessary.


Assemble Procedure





1. Apply hydraulic clutch fluid to the piston assembly (10) and the cylinder body.
2. Install the piston assembly into the cylinder.
3. Install the push rod (9) and the washer (8).





4. While pushing down on the piston assembly (2) install the C-clip (1).





5. Install the boot (6) and the nut (5) and screw on the top portion of the push rod assembly (4).


Installation Procedure





1. Add hydraulic clutch fluid to the master cylinder and bleed the air from the cylinder by tilting the cylinder before you install the assembly.

Notice: Refer to Fastener Notice in Service Precautions.

2. Install the master cylinder assembly and the nut and the bolt (6).
^ Tighten the nut and bolt to 13 Nm (10 ft. lbs.).
3. Apply grease to the clevis pin. Using lubricant GM P/N 1051344, or equivalent.
4. Install the clevis pin (5).
5. Install the retainer (4).





6. Install the clutch fluid pipe.
7. Install the clutch fluid pipe flare nut (1).
^ Tighten the clutch fluid pipe flare nut to 13 Nm (10 ft. lbs.).
8. Fill the master cylinder with brake fluid and check for brake fluid leakage.





9. Bleed the air from the system and check for the clutch pedal free travel. Refer to Hydraulic Clutch Bleeding
10. Connect the negative battery cable.