Bleeding brakes procedure

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Jul 18, 2008 | 05:33 PM

voda1

Thread Starter

Burning Brakes

Joined: Jul 2005

Posts: 788

Likes: 33

From: Cedar Rapids IA

Bleeding brakes procedure

The GM service manual says to "stroke the brake pedal while pressure bleeding". The techs I've talked are puzzled by why that's needed. If so, when exactly is the right time to stroke the pedal?

A. pump pedal, release pedal, open bleeder...
or
B. pump pedal, open bleeder...

Don't forget we are pressure bleeding at 20-25psi.

Jul 18, 2008 | 06:12 PM

Last C5

Safety Car

Joined: Jul 2004

Posts: 3,904

Likes: 29

From: Vancouver Washington

Quote:

Originally Posted by voda1

If you're using something like a Motive pressure bleeder then just leave the pedal alone. It'll bleed fine.

Jul 18, 2008 | 06:22 PM

Bill Dearborn

Tech Contributor

Joined: Oct 1999

Posts: 41,058

Likes: 9,820

From: Charlotte, NC (formerly Endicott, NY)

My Service Manual has two procedures one is manual and the other is pressure. The manual one has somebody pressing the brake pedal but the pressure procedure does not mention touching the brake pedal.

Bill

Jul 18, 2008 | 06:38 PM

TEXHAWK0

Le Mans Master

Joined: Sep 2003

Posts: 8,847

Likes: 795

From: Longview Texas

If you have two people, I still prefer the manual method.
I think you can build more pressure using the pedal than you can with a pressure bleeder where the reservoir is involved.

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