Bench Bleed ???
Thread Starter
Instructor
Joined: May 2012
Posts: 122
Likes: 0
From: Waxhaw NC
Bench Bleed ???
I removed the master cylinder to replace the brake booster of my '93 --- it just would not come out without removing the MC. Brake fluid needs to be changed anyway.
My question is do I need to bench bleed the master cylinder or can I just reinstall everything and proceed with the usual bleeding process?
I did a bench bleed one time (few years back) and from what I can remember it was a pain.
My question is do I need to bench bleed the master cylinder or can I just reinstall everything and proceed with the usual bleeding process?
I did a bench bleed one time (few years back) and from what I can remember it was a pain.
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
U would think u could bench bleed the M/C in the car but when I last tried it decades ago it really didn't work. The object is to get the air out of the M/C chambers using plastic tubing to recirc back into the reservoir. Then seal it up and install. Something bout when install u don't get full travel or the angle of M/C doesn't bleed right.
Well good luck and let us know what works.
Well good luck and let us know what works.
Instructor
Joined: Apr 2014
Posts: 124
Likes: 22
From: Knoxville Tn
Usually bench bleeding is for new MC to avoid 'flipping ' the seal, according to the last one I got from AZ. I've always been lucky when I didn't bench bleed, except once. They took that one back and it was fine after I bench bled it. It lubes the seals.
Thread Starter
Instructor
Joined: May 2012
Posts: 122
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From: Waxhaw NC
Roger that. Now I'm thinking of bench bleeding it since I need to remove and clean the reservoir due to all the junk in it. Thank you for all the input.
Team Owner
Joined: Sep 2003
Posts: 20,179
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
IF the MC is pre-bled on the bench, there is less air introduced into the system when bleeding. Unless you start at the wheels.
