Master Cylinder Reservoir Replacement. Buick GL7 (Export) 2000

For 1990-2009 cars

### Removal Procedure

Notice: Do not overtighten vise, or damage to the master cylinder will result.

1. Remove the master cylinder. Refer to. Master Cylinder Replacement In Hydraulic brakes.
2. Clamp the flange on the master cylinder body in a vise. Do not clamp the master cylinder body.
3. Carefully drive out the spring pins with a suitable 1/8-inch punch. Do not damage the reservoir or the cylinder body when pushing out the pins.
4. Remove the reservoir body by pulling the body straight up and away from the cylinder body.
5. Remove the O-rings from the grooves in the reservoir.
6. Inspect the reservoir for cracks or deformation. Replace the reservoir if necessary.
7. Clean the reservoir with clean denatured alcohol.
8. Dry the reservoir with non-lubricated compressed air.

### Installation Procedure

1. Lubricate the new O-rings and the reservoir-to-housing fittings with clean brake fluid.
2. Insert the O-rings into the grooves in the reservoir. Make sure that the O-rings (10) are properly seated.
3. Connect the reservoir to the master cylinder body. Use your hand in order to press the reservoir straight down into the body.
4. Carefully install the spring pins in order to retain the reservoir. Do not damage the reservoir or the cylinder body.
5. Install master cylinder. Refer to Master Cylinder Replacement In Hydraulic brakes.