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Hydraulic Clutch Seal Update: April 2008 We have been told that this update can also be performed with an "O" ring, which offers more crush and a much tighter seal. Update provided by Dr. Dave Danielson. Also note that the serial number range might be higher than listed in the original warranty bulletin. Original: Warranty Bulletin Number: w99-06, June 19, 1999 Serial Range: 201-550 Symptom: Clutch slave cylinder seal leakage, leak will show traces of fluid on the primary cover below the slave cylinder cover. Correction: Replace as needed the original "quad" seal with new style "D" ring seal. This repair can be completed without removing the outer primary cover. Remove the clutch slave cylinder cover, loosen and remove the outer adjuster lock nut, thread the adjuster until the second nut is removed. Remove the slave cylinder snap ring. Using care, slowly pump the clutch lever allowing the slave cylinder to walk out of the slave assembly. The original "quad" ring will be retained by its own tension in the slave assembly bore. Remove "quad" ring and install "D" ring. Re-install slave cylinder and spring by (carefully) pushing into place. Re-install snap ring with the square edge towards the thrust load. Fill the clutch reservoir with DOT 5 brake fluid and bleed the clutch system. Slowly pump the clutch lever until tight, then open bleeder to release air. Repeat procedure until clutch response is normal. Adjust the clutch to allow a .010" gap between the slave piston and snap ring with the clutch lever pulled. NOTE: Vacuum bleeding can be done from the lower bleed screw. |