Impala V8-5.3L (2008)
1. Disconnect the electrical connector from the brake fluid level sensor.
2. Disconnect the brake pipes from the master cylinder.
Important: Install a rubber cap or plug to the exposed brake pipe fitting ends in order to prevent brake fluid loss and contamination.
3. Plug the open brake pipe ends.
4. Remove master cylinder mounting nuts.
5. Remove the master cylinder from the vehicle.
6. Drain the master cylinder reservoir of all brake fluid.
Installation Procedure
1. Bench bleed the master cylinder. Refer to Master Cylinder Bench Bleeding (See: Procedures/Master Cylinder Bench Bleeding) .
2. Install the master cylinder to the vacuum brake booster.
Notice: Refer to Fastener Notice .
3. Install the master cylinder mounting nuts.
Tighten the master cylinder mounting nuts to 33 N.m (24 lb ft).
4. Remove the plugs from the brake pipes
5. Connect the brake pipes to the master cylinder.
Tighten the brake pipe fittings at the master cylinder to 18 N.m (13 lb ft).
6. Connect the electrical connector to the brake fluid level sensor.
7. Bleed the brake system. Refer to Hydraulic Brake System Bleeding (Manual) (See: Brake Bleeding/Service and Repair)Hydraulic Brake System
Bleeding (Pressure) (See: Brake Bleeding/Service and Repair) .
