Using a screwdriver, prise the release lever from the ball stud on the gearbox housing; if this proves difficult, push the spring from the release lever first and remove the plastic pad from the stud. Slide the release bearing, together with the lever, from the guide sleeve and withdraw it over the gearbox input shaft. Separate the release bearing from the lever and spin the release bearing by hand to check for smooth running; any tendency to seize or run rough will necessitate renewal of the bearing. If it is to be re-used, wipe it clean with a dry cloth, avoiding any liquid solvent that could remove the internal grease. Clean the release lever, ball stud, and guide sleeve. Refitting is a reversal of removal, ensuring to lubricate the ball stud with molybdenum disulphide grease and smear a little grease on the release bearing surface that contacts the diaphragm spring fingers in the clutch cover. Fit the spring onto the release lever and press the release lever onto the ball stud until the spring holds it in position.