IML: Grabbing Brakes

[randalpark@xxxxxxx]

As a point of clarification, for most people this symptom would mean 
that the master cylinder, calipers, or wheel cylinders are bad. I 
respect others knowledge for their own car, but brakes that do not 
immediately release is not usually something that is fixed by adjusting 
the vacuum to the power booster. Sticky brakes, mushy pedal, or pedal 
all the way to the floor usually means a complete brake job, or at 
least a trip to a respected mechanic if you are not experienced in 
working on brakes.

Paul W.

-----Original Message-----
From: mechimike@xxxxxxxxx
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Tue, 16 Jan 2007 7:59 AM
Subject: Re: IML: 67 LeBaron brakes

> How do you restrict the vacuum to the brake booster?

The problem I have had with my 67 Crown's brakes is
that the brakes tend to "grab" and stay applied for a
few moments after I lift my foot from the brake pedal.
I found that by restricting the vacuum boost this
problem was alleviated.

The way I restricted the boost was to remove the
vacuum line from the booster and insert another
plastic tube with a smaller diameter hole inside of
the vacuum tube.  Thus, the ID of the orifice the air
must pass through is reduced (in this case, from 3/8"
to 1/8") and the vacuum is restricted.  Note, this is
not a perfect fix, as the steady-state vacuum level
will still be the same, but it will take longer to
build up that vacuum level in the booster.  So under
prolonged brake applications, I still get some grab.

--Mike Pittinaro

'To Engineer' was never meant to signify poking around with a mouse on 
a
Nintendo-on-steroids computer system.

'It's a shallow life that doesn't give a person a few scars'
-- Garrison Keillor



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