Leaky Master Cylinder
Thread Starter
Advanced
Joined: Dec 2000
Posts: 50
Likes: 1
From: Fremont, CA USA
Leaky Master Cylinder
All, my 1990 just failed (brake booster filling up with brake fluid), I'm going to order MC from rock auto. My question: how do I clean out the brake booster of brake fluid. I figure to start is buy small pump from Harbor Freight, then I'm not sure and looking for advise.
The post on this issue were helpful in the diagnosis BTW.
Thanks!
The post on this issue were helpful in the diagnosis BTW.
Thanks!
Zen Vet Master Level VII
Joined: Mar 2016
Posts: 5,218
Likes: 1,174
From: Southlake, TX
"But wait; there's more!"
Don't for get to bleed out your brakes using new fluid. You you will get your old icky stuff out of the reservoir, but the same, old stuff will still be in your lines. Clean first, use new fluid and pump the good stuff through the whole system.
Team Owner
Joined: Sep 2003
Posts: 20,179
Likes: 673
From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Pull the booster and drain out the fluid.
Might try rinsing with alcohol, it may dry out the diaphragm.
Or just replace the booster. Why take the chance.
We are talking about the number one safety item here......
Might try rinsing with alcohol, it may dry out the diaphragm.
Or just replace the booster. Why take the chance.
We are talking about the number one safety item here......
