Replacing the front brake pads

When the cylinder body is open, do not press the brake pedal, otherwise the piston will pop out. Be careful not to damage the piston boot or allow oil to get on the brake disc. Always replace pads with gaskets. If the gaskets show signs of rust or peeling of the rubber coating, replace them with new ones. Unscrew the connecting bolt only when disassembling and replacing the caliper assembly. In these cases, hang the cylinder body on a wire so as not to stretch the brake hose. Run in the friction surfaces of the brakes in case of boring or replacing drums or discs, after replacing the brake shoes or friction linings, and also if, after a short run, begins to «fall through» pedal.

Visual check of pad thickness

Check pad thickness. To do this, raise the car, remove the wheel and look through the inspection hole in the cylinder body (pic. 6.39).

• Minimum thickness of brake pads: 1 mm.
• Limit wear: 2.0 mm.

Removing the brake pads

Attention! When replacing brake pads, always change the inner and outer gaskets and gasket covers as a set.

Drain the brake fluid.

Remove the front wheel and temporarily secure the rim with two nuts.

Turn away a bolt and disconnect an arm of a brake hose.



While holding the guide pins, unscrew the caliper mounting bolts (pic. 6.40).



Loosen the caliper housing mounting bolts and remove the caliper (pic. 6.41).




While holding the caliper in a soft-jawed vise, use a screwdriver and hammer to remove the guide pin boots (pic. 6.42).



Using a screwdriver, remove the brake cylinder boot spring ring and boot (pic. 6.43).

Place a rag between piston and cylinder.




Using compressed air, remove the piston from the cylinder (pic. 6.44).



Using a screwdriver, remove the seal (pic. 6.45).



Measure the thickness of the brake pads with a ruler (pic. 6.46).

• Standard thickness: 12 mm.
• Minimum thickness: 1.0 mm.

If the minimum pad thickness is not as specified, replace the pads.

Push the piston completely into the cylinder using the tool.

Install the brake disc pad.