Overhaul

Disassembly
1. Clamp the master cylinder in a vice installed with soft jaws.
2. Remove the rubber seals from the brake hose connections.
3. Press in the primary piston (nearest the bulkhead partition) and remove the secondary piston's stop pin.
4. Remove the pistons and plastic sleeves from the cylinder bore.
5. Inspect the parts and replace any that are damaged.
- Also check that the cylinder bore is not scored.

Assembly





1. Install the secondary piston with new seals, if necessary.
- Since the primary piston's front seal cannot be changed, it will be necessary to change the entire piston assembly if the seal is damaged.
2. Install the secondary piston's spring and retaining ring.
3. Lubricate the seals and cylinder bore with brake fluid.
4. Install the secondary piston's plastic sleeve.
- Insert the secondary piston into the cylinder bore.
- Take care not to damage the seals.
5. Insert the primary piston into the cylinder bore.
- Take care not to damage the seals.
6. Press in the primary piston and install the secondary piston's stop pin back in place.