mastercylinder question
Thread Starter
Intermediate
Joined: Jan 2006
Posts: 42
Likes: 0
mastercylinder question
if the master cylinder wasn't bench bled could this cause a seal break between brake booster and m/c? I'm not sure i did it right the first time but this is my second mastercylinder and even though there is fluid in the front driver-side wheel most of the fluid leak indicated that it's coming from the m/c area. Any ideas? i'll post pictures of the leak later.
Le Mans Master
Joined: Apr 1999
Posts: 6,134
Likes: 46
From: Raleigh North Carolina
Originally Posted by itzfrank
if the master cylinder wasn't bench bled could this cause a seal break between brake booster and m/c? I'm not sure i did it right the first time but this is my second mastercylinder and even though there is fluid in the front driver-side wheel most of the fluid leak indicated that it's coming from the m/c area. Any ideas? i'll post pictures of the leak later.
I have had a very high incidence of internally rusty -new- and rebuilt master cylinders.
The rust will cause the internal seals to fail & leak. This leak is seen between the M/C and the booster, or between the M/C and the firewall.
I only replace when the M/C is too bad to rebuild.
Safety Car
Joined: Aug 2000
Posts: 3,711
Likes: 43
From: San Antonio TX
Originally Posted by itzfrank
line wrench?
Or, what is more commonly known as a flair nut wrench if he wasn't referring to the saucy vixen. Besides, Tom has pointed you in the right direction.
Former Vendor
Joined: Nov 2005
Posts: 683
Likes: 1
From: Mounds View Minnesota
Originally Posted by gerry72
He meant lying wench.
Or, what is more commonly known as a flair nut wrench if he wasn't referring to the saucy vixen. Besides, Tom has pointed you in the right direction.
Or, what is more commonly known as a flair nut wrench if he wasn't referring to the saucy vixen. Besides, Tom has pointed you in the right direction.
Lying Wench!
Frank,
If master should ever leak it's bad!
But I seriously doubt that not properly bench bleeding would cause it.
One thing to think about though is make sure you are not just seeing splashing from pumping the brakes with the master clyinder off!
You will get brake fluid dripping all over if you have air in the lines and pump the brakes with the MC cover off...
Drifting
Joined: May 2005
Posts: 1,909
Likes: 6
From: Lake Arrowhead - Georgia > 72 Base Coupe & 74 BB Roadster
I have bought a re-built MC that leaked out the rear seal after the 1st press of the pedal. Fluid ran down the booster where the MC bolts on. Eventually the booster went bad from the fluid invading inside the booster. 
Now I only buy NEW brake parts...no more Autozone junk ! Autozone is a pretty good OIL STORE, just don't buy any auto parts there. 
I love it when the parts counter boy is tapping on the computer keyboard and ask if my 72 Vette is 2 wheel or 4 wheel drive -- gas or diesel -- all while "looking" for a box of AC R44T's.. 
Sorry...didn't mean to get on a roll !
Now I only buy NEW brake parts...no more Autozone junk ! Autozone is a pretty good OIL STORE, just don't buy any auto parts there. I love it when the parts counter boy is tapping on the computer keyboard and ask if my 72 Vette is 2 wheel or 4 wheel drive -- gas or diesel -- all while "looking" for a box of AC R44T's.. Sorry...didn't mean to get on a roll !
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Le Mans Master
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
Originally Posted by fotyfobravo
I have bought a re-built MC that leaked out the rear seal after the 1st press of the pedal. Fluid ran down the booster where the MC bolts on. Eventually the booster went bad from the fluid invading inside the booster. Now I only buy NEW brake parts...no more Autozone junk ! Autozone is a pretty good OIL STORE, just don't buy any auto parts there. I love it when the parts counter boy is tapping on the computer keyboard and ask if my 72 Vette is 2 wheel or 4 wheel drive -- gas or diesel -- all while "looking" for a box of AC R44T's..
Sorry...didn't mean to get on a roll !
Now I only buy NEW brake parts...no more Autozone junk ! Autozone is a pretty good OIL STORE, just don't buy any auto parts there. I love it when the parts counter boy is tapping on the computer keyboard and ask if my 72 Vette is 2 wheel or 4 wheel drive -- gas or diesel -- all while "looking" for a box of AC R44T's.. Sorry...didn't mean to get on a roll !
Some of those 'Zoners are about as intellegent as a box of rocks...