Cleaning, Inspecting & Honing Caliper

Honing Brake Caliper Piston Bore:

Inspect the piston bore for scoring or pitting
- Bores that show light scratches or corrosion, can usually be cleared with crocus cloth.
- Bores that have deep scratches or scoring should be honed, using Tool C-4095, providing the diameter of the bore is not increased more than 0.0254 mm (0.001 inch).
- If the bore does not clean up within this specification, a new caliper housing should be installed. Install a new piston if the old one is pitted or scored.

When using a hone:
Coat the stones and bore with brake fluid. After honing the bore, carefully clean the seal and boot grooves with a stiff nonmetallic rotary brush.

Use extreme care in cleaning the caliper after honing. Remove all dirt and grit by flushing the caliper with brake fluid; wipe dry with a clean, lintless cloth and then clean a second time.

Be sure to install the hone baffle before honing bore.
- The baffle is used to protect the hone stones from damage. Use extreme care in cleaning the caliper after honing.