Optima L4-2.4L (2001)
Brake Master Cylinder: Service and Repair
REMOVAL
1. Detach the brake tubes from the master cylinder, and then install the plugs.
CAUTION: Do not let brake fluid remain on a painted surface. Wash it off immediately.
2. Remove the master cylinder mounting nuts, and then lift out the master cylinder.
DISASSEMBLY
1. Remove the reservoir cap and drain the brake fluid into a suitable container.
2. Remove reservoir from the master cylinder.
NOTE: When bleeding by pressurized fluid, do not press the brake pedal.
3. Using snap ring pliers, remove the retaining ring.
4. Remove the piston stopper (ABS only).
5. Remove the primary piston assembly.
6. Using a screwdriver, push the secondary piston all the way down and remove the piston stopper (ABS only). Remove the secondary piston
assembly.
NOTE: Do not disassemble the primary and secondary piston assembly.
INSPECTION
1. Inspect the cylinder bore for rust or scoring.
2. Inspect the master cylinder for wear or damage. If necessary, clean or replace the cylinder.
NOTE:
1
If bore is damaged, replace the master cylinder assembly. Do not attempt to bone bore.
