GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2009
🢒
Optra - Mexico
🢒
Brakes
🢒
Hydraulic Brakes
🢒 Master Cylinder Replacement
Removal Procedure
Disconnect the electrical connector from the reservoir.
For vehicles with the antilock brake system (ABS) braking system, disconnect the brake lines from the master cylinder body.
For vehicles with the non-ABS braking system, disconnect the brake lines from the proportioning valves.
For vehicles with the manual transaxle, disconnect the clip to the clutch hose connection to the master cylinder and move the clip out of the way.
Remove the clutch hose from the master cylinder, if equipped.
Plug the opening to the brake lines to prevent fluid loss and contamination.
Remove the attaching nuts from the power booster.
Remove the master cylinder assembly.
Drain the brake fluid.
Installation Procedure
Caution:
Refer to
Fastener Caution
in the Preface section.
Install the master cylinder assembly with the new attaching nuts and tighten to
18 N·m (13 lb ft)
.
For vehicles with the ABS braking system, as shown, connect the brake lines to the cylinder body.
For vehicles with the non-ABS braking system, connect the brake lines to the proportioning valves and tighten to
16 N·m (12 lb ft)
.
For vehicles with the manual transaxle, connect the clip to the clutch hose connection to the master cylinder reservoir, if equipped.
Connect the electrical connector.
Add brake fluid.
Inspect for leaks and recheck the fluid level.
Bleed the brake system. Refer to
Hydraulic Brake System Bleeding
.