Checking caliper assembly components

Checking caliper assembly components

The piston and caliper case must not show signs of friction or seizure, otherwise the caliper complete with piston will need to be replaced.

The dust excluder and seal should always be replaced; also make sure that the bleed screw is not blocked.

Use a solution of FIAT LDC detergent with hot water to wash the metal parts.

1. Caliper mounting bracket
2. Bleed screw
3. Caliper case
4. Seal
5. Dust excluder
6. Brake pads
7. Shim

Refitting

Fit the piston in the caliper case using tool 1856133000.

Before fitting the piston in the caliper case, fit the dust excluder on the rear end of the piston.

Lubricate the parts concerned with brake fluid before final assembly.

Filling brake caliper

After overhauling the brake caliper and before fitting it to the car, it should be filled in accordance with the following procedure:

• undo the bleed screw;
• insert the end of a transparent tube in the bleed screw hole;
• using a normal container with brake fluid, fill the caliper with fluid until air bubbles emerge from the threaded hole where the brake hose pipe is connected;
• lock the bleed screw.