Author Topic: brake master cylinder repair  (Read 1217 times)

gmcjimmy4x4

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brake master cylinder repair
« on: October 16, 2009, 08:43:57 PM »
Was looking to rebuild my master cylinder and noticed fluid leaks out of the sight window. Anyone have an idea of how to sop the leak? Can you replace the plastic windows? Maybe remove it and somehow fill in the hole? Any ideas would be appreciated.

nevadanotch

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brake master cylinder repair
« Reply #1 on: October 23, 2009, 09:31:42 AM »
"Can you replace the plastic windows?"  As far as I know there aren't any replacement pieces you can get to do this.

My suggestion would be to leave the window in the master cylinder and try to use some RTV sealant covering the entire inside of the window and part of the surrounding area.  You will have to make sure the master cylinder is completely clean and free of any brake fluid!  If you do not do this the RTV will not seal and it will leak again!

You will have to search around to find a RTV sealant that will hold up to brake fluid.
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