Hi Guest!
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
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Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
eschneider
Jedi Warrior
Offline
Ran into trouble when replacing wheel cylinders on a '67 MKIII spitfire.
1) As shown in the photo below, the fully collapsed dimension on the cylinders is roughly 45mm. When the drums wouldn't fit over the brake shoes, I discovered that the compressed dimenion of the old cylinders was roughly 42mm. In order to resolve the issue, I had to grind down (very slighly) the contact pads on the brake shoes.
2) after the brakes were assembled and bled, and after a test drive and overnight sit - the next morning there was some seepage around the bleeders. Two attempts to re-seat them failed; I had to replace the bleeders with the old ones to stop the seepage.
The wheel cylinders used were AP / Caparo. Perhaps I got a "bad set", or maybe I missed something - but the experience is worth sharing in case someone else has this problem.
1) As shown in the photo below, the fully collapsed dimension on the cylinders is roughly 45mm. When the drums wouldn't fit over the brake shoes, I discovered that the compressed dimenion of the old cylinders was roughly 42mm. In order to resolve the issue, I had to grind down (very slighly) the contact pads on the brake shoes.
2) after the brakes were assembled and bled, and after a test drive and overnight sit - the next morning there was some seepage around the bleeders. Two attempts to re-seat them failed; I had to replace the bleeders with the old ones to stop the seepage.
The wheel cylinders used were AP / Caparo. Perhaps I got a "bad set", or maybe I missed something - but the experience is worth sharing in case someone else has this problem.
