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Brake Master-Cylinder Replacement
The brake master-cylinder is the component that controls the hydraulics for the entire braking system, front and rear. When you apply pressure to your brake pedal, it is the master cylinder that directs brake fluid to front and rear brake systems, allowing the car to come to a stop.
Removing the master cylinder and servos
- steps:
- Remove the cotter pin that holds the braking fulcrum where it's connected to the master cylinder. Take care not to lose the small cotter pin, as it will be needed later during reinstallation.
- Disconnect all of the brake lines from the master cylinder. The rusty color of the old brake fluid shows how brake fluid can absorb moisture and cause rust from the inside out.
- With the brake lines all disconnected, loosen the retaining nut that holds the master cylinder in place using a socket wrench.
- With the nuts removed, carefully remove the master cylinder and set it aside.
- With the master cylinder removed, move on to removal of the servos that are mounted to the firewall inside the engine compartment. Use liberal amounts of penetrating oil to help loosen the metal connections and hoses on the servos.
- Use hose cutters to cut the old servo hoses for easier removal.
- With the hoses out of the way, begin work disconnecting the steel lines from the servos, being careful no to cause further damage to any corroded connections.
- With the lines all disconnected, loosen and remove the servo mounting nuts, and carefully lift out the servo.
- Repeat these steps for the second servo.
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