72-CLASSIC_RIDE Posted October 1, 2022 Share Posted October 1, 2022 Hey All, Been dealing with a leak from the Master Cylinder between Brake Booster. Finally decided to replace Master Cylinder and when removed, also determined the Rubber Cup that fits between Master Cylinder and Brake Booster somewhat eroded and curious if I need to replace this Boot? Pic's show where a small diameter piece that was once part of the Boot stayed in cavity when Boot removed. Also outer diameter of Boot is/was stuck on Booster side per pic. I'm really not sure what this Boot actually does other than prevent leakage? I have searched for this On Line but so far no Joy! Am I going to have to replace Brake Booster in order to get that Boot? Any idea's on where I might come across one? I believe a Factory Brake Booster... Appreciate your insight. Doug Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted October 1, 2022 Share Posted October 1, 2022 Silly question, did you try Inline tube? They make alot of the little "strange" parts. Quote Link to comment Share on other sites More sharing options...
72-CLASSIC_RIDE Posted October 1, 2022 Author Share Posted October 1, 2022 1 minute ago, MC1of80 said: Silly question, did you try Inline tube? They make alot of the little "strange" parts. I had not but will now! Thanx for the tip.... Doug Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted October 1, 2022 Share Posted October 1, 2022 Maybe somewhere that rebuilds the boosters? I think that's a thing, pretty sure I've heard of that. Quote Link to comment Share on other sites More sharing options...
jft69z Posted October 1, 2022 Share Posted October 1, 2022 23 minutes ago, cny first gen 71 said: Maybe somewhere that rebuilds the boosters? I think that's a thing, pretty sure I've heard of that. Call 'brakeboosters.com", Mike Gibbons. They rebuild GM boosters, etc. Did one for me, real nice work. They may have what you need, or can steer you in a direction. https://www.brakeboosters.com/ (805) 441-5390 1 Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted October 2, 2022 Share Posted October 2, 2022 I knew I'd heard of that somewhere. Quote Link to comment Share on other sites More sharing options...
72-CLASSIC_RIDE Posted October 2, 2022 Author Share Posted October 2, 2022 This Cup looks to be a Dust Seal and not for pressure. I believe I can simply reinstall deteriorated Cup and will provide necessary protection from dirt. That is what I I think anyway. I'm waiting on a couple return calls and possibly perusing a junk yard or two if I feel I really need this to see if a better used one exists. Other option to replace Power Booster and considering a Cadmium one. Doug Quote Link to comment Share on other sites More sharing options...
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