Master cylinder leak
Thread Starter
Pro
Joined: Mar 2002
Posts: 535
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Master cylinder leak
The m/c on my 75 is leaking out the back of the cover. I opened the cover and found the back reservoir almost empty and the front one full. After refilling the reservoir I replaced the cap and have noticed some fluid slowly running down the back of the m/c. Do I just need a new gasket or is something else going on? Thanks for any help.
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Re: Master cylinder leak (kaz1961)
Depends on whether it is comming from the cover or the body of the MC.
It is common for a MC to leak out from the rear piston. In that case it would need rebuilding.
[Modified by wombvette, 10:26 PM 4/29/2004]
It is common for a MC to leak out from the rear piston. In that case it would need rebuilding.
[Modified by wombvette, 10:26 PM 4/29/2004]
Safety Car
Joined: Jun 2002
Posts: 4,751
Likes: 2,500
From: Buckeye, AZ
St. Jude Donor '12-'13
Re: Master cylinder leak (kaz1961)
The pistons seals are probably bad. You need to either replace the master or rebuild it. It is no cheaper to rebuild the master, but in my case I needed to keep the original numbers part so I rebuilt. It took an hour to remove, rebuild, bench bleed, reinstall. The warning signs are there, now heed the warning before you have bigger problems.
