Replacing the piston seal (VW Golf 1)

A damaged piston seal in a disc brake caliper must be replaced immediately to prevent the piston from seizing due to corrosion and dirt.

Remove the brake pads.

The assistant gently presses the brake pedal to force the piston out.

Remove the floating bracket.

Move the piston seal clamp ring. Remove the seal.

Insert the inner edge of the new cuff into the extended piston.

Move the piston back.

Place the outer edge of the cuff onto the bracket.

Place the ring near the cylindrical thickening of the bracket and pull the ring onto the cuff.

If you use a screwdriver for this, be careful not to damage the seal.

In a cam disc brake mechanism with a floating caliper: remove the old cuff.

Place the new seal so that the outer sealing edge is located near the piston.

[The original article is available at: vwmanual.ru]

The inner sealing edge of the cuff with a screwdriver (do not damage the cuff) insert into the groove of the mounting bracket.

Move the piston back into the brake caliper housing.