Visual Inspection

CAUTION:
^ Blistering or swelling indicates contamination of brake fluid by a petroleum-based solvent or oil. In that case, all rubber components in the brake hydraulic system must be replaced and the entire system must be flushed with clean brake fluid to prevent recontamination.
^ If found to be contaminated, replace the following components:
- Front Brake Caliper Seals
- Front And Rear Brake Hoses
- Master Cylinder Cap Gasket
- Master Cylinder Seals
- Brake Pressure Control Valves

1. Wash brake master cylinder body, especially bore, along with primary piston and secondary piston assemblies in clean brake fluid. Denatured or isopropyl alcohol can also be used.

NOTE: The aluminum body of the brake master cylinder is anodized. Some signs of bore wear on the anodized surface, as evidenced by lighter areas of the anodized surface are normal and not detrimental.

2. Inspect seals on primary and secondary piston assemblies for cuts, nicks, scratches or signs of wear and for presence of any blistering or swelling.

CAUTION: Honing of the bore on aluminum brake master cylinders is not permitted as the anodic coating and hardness could be removed.

3. Inspect brake master cylinder bore for pitting, corrosion or heavy wear. Heavy wear is characterized by scoring or galling of metal.
4. Replace if necessary.
5. Thoroughly dry all parts cleaned with alcohol.