 Leaking master cylinder |
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| rudedude |
 Aug 27 2021, 07:09 AM
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#1
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Senior Member  Group: Members Posts: 511 Joined: 1-January 05 From: minneapolis, mn Member No.: 3,387 Region Association: Upper MidWest 
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I am having a problem with a leaking "welch" plug on an installed master cylinder that I purchased in a group buy from a vendor here. We all know what a pain it is to change a master cylinder so I am hoping to avoid that process. I see that bbrock had the same issue and was able to fix outside of the car. Has anyone fixed the welch plug in the car with any success? I really don't want to take it out.
Thanks for any good ideas. |
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| bbrock |
Aug 31 2021, 07:59 AM
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#2
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains
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FWIW, the welch plug in question is not under pressure when the peddle is pushed. It only "sees" the brake fluid as it drains via gravity from the reservoir. I don't think I'd trust any welch plug to hold hydraulic pressure.
Still, it represents a significant safety hazard in that it could leak all of your brake fluid without your knowing it. In my case, it was easy to see that the welch plug was never pressed into place on assembly, and also easy to see it had properly flattened and sealed after pressing it in myself. I've been monitoring brake fluid level closely and it hasn't budged so far. |
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Posts in this topic
rudedude Leaking master cylinder Aug 27 2021, 07:09 AM
bbrock I think you might be able to do it without taking ... Aug 27 2021, 11:30 AM rudedude Thanks Brent for the advice. I didn't know ho... Aug 27 2021, 08:02 PM iankarr What size socket @bbrock ? Something small to pre... Aug 27 2021, 08:22 PM bbrock @rudedude it does take a fair amount of pressure ... Aug 27 2021, 09:49 PM friethmiller @rudedude , Having the same issue on a new 19mm MC... Aug 29 2021, 12:13 PM rudedude I put the second one I bought at the same time in ... Aug 29 2021, 07:34 PM bdstone914
I am having a problem with a leaking "welch... Aug 29 2021, 08:40 PM rudedude Yes I have learned in the past to only trust origi... Aug 31 2021, 07:24 AM
VaccaRabite If it was my car, I'd suck it up and replace t... Aug 31 2021, 08:09 AM |
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