Remove a clutch master cylinder

Remove a clutch master cylinder

Set a container to catch any fluid that runs out when you remove the cylinder, and protect paintwork with plastic sheeting or absorbent rags.

Unscrew the pipe union nut and lift the pipe clear, taking care not to bend or damage it. Cover the pipe end with a small plastic bag secured by a rubber band, to keep out dirt.

Disconnect the clutch pedal from the master-cylinder pushrod. Most cars have a simple clevis pin on the pedal arm which passes through a fork on the end of the pushrod. Remove the split pin or retaining clip to release the clevis pin. (Use a new split pin when refitting.)

If the reservoir is not integral with the cylinder, remove the reservoir cap. Put a small sheet of plastic over the mouth of the reservoir, the screw the cap back on over the plastic. This reduces fluid loss through the pipe to the cylinder by blocking the vent hole in the cap. Unscrew the union nut connecting the pipe to the cylinder.

Pull the reservoir or its connecting pipe off the cylinder and quickly plug the hole in the reservoir or the end of the pipe with a small rubber bung or cork.

Normally the master cylinder is held to the bulkhead by two bolts, or nuts on studs. Unscrew these and lift off the cylinder.

After refitting, top up with fluid and bleed the system.