2. Repairs

New Release / Throwout Bearing Fix

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Pic. 10: The inner race of the bearing and the lip of the turned ring line up.
10 / 11

Pic. 10: The inner race of the bearing and the lip of the turned ring line up.

BearingBlesi

  • By Gari Blesi (26 & 27): When I purchased a release (throwout) bearing, I was disappointed to find a spacer ring included to make up for the difference in thickness between the original and the replacement bearing. Pic. 1: Orig. bearing, with bearing sleeve, on left. Replacement, with spacer ring, on right.
  • Pic. 2: The throwout bearing sleeve has a grease feed hole on right which receives grease from grease cup. On left, is another hole leading to trans. shaft on which sleeve slides. There is a small groove around the sleeve’s base which allows grease to travel from feed hole to hole leading to trans. shaft.
  • Pic. 3 & 4: The new spacer ring inc. with replacement bearing is too large and loosely fits on the sleeve. It can slide and cover the grease feed hole misdirecting the grease and preventing it from moving to the trans. shaft on which sleeve slides.
  • Pic. 3 & 4: The new spacer ring inc. with replacement bearing is too large and loosely fits on the sleeve. It can slide and cover the grease feed hole misdirecting the grease and preventing it from moving to the trans. shaft on which sleeve slides.
  • Pic. 5: I cut a channel in the sleeve from the grove that runs around the base of the sleeve to the hole that feeds grease to the trans. shaft
  • Pic. 6 & Sketch 7: I then turned a ring on the lathe which is wider than the spacer ring provided with the bearing. It fits snugly over the sleeve. If the fit is too tight it may be too difficult to remove by hand, if it becomes necessary. I made a grove on the inside and bottom which allows grease to travel from the feed hole to the hole that passes to the trans. shaft. The top of the ring was turned down to match the inner race on the replacement bearing.
  • Pic. 6 & Sketch 7: I then turned a ring on the lathe which is wider than the spacer ring provided with the bearing. It fits snugly over the sleeve. If the fit is too tight it may be too difficult to remove by hand, if it becomes necessary. I made a grove on the inside and bottom which allows grease to travel from the feed hole to the hole that passes to the trans. shaft. The top of the ring was turned down to match the inner race on the replacement bearing.
  • Pic. 8 & 9: The holes that remain exposed after the turned ring is in place will be covered by the bearing’s inner race. The press fit will be tight enough to prevent grease from flowing anywhere but to where it should.
  • Pic. 8 & 9: The holes that remain exposed after the turned ring is in place will be covered by the bearing’s inner race. The press fit will be tight enough to prevent grease from flowing anywhere but to where it should.
  • Pic. 10: The inner race of the bearing and the lip of the turned ring line up.
  • Pic. 11: The final result is that grease arrives only where needed on the trans. shaft inside the release (throwout) bearing sleeve and not on the clutch plates.
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