As I understand the servo, vacuum pressure is applied to both sides of the
piston. It is atmospheric pressure that creates the "boost". Does the
boost really vary with the amount of vacuum or is it a function of atmospheric
pressure?
Gary Hodson
In a message dated 8/20/2009 12:56:32 P.M. Central Daylight Time,
coudesluijs@chello.nl writes:
I would check the non return valve of the servo. The brake force should
be max when you slow down on the engine creating max. vacuum.
Kees Oudesluijs
Mark Schneider schreef:
> Listers,
>
> Questions about the Lockheed replacement servo. I have had one in my
> BJ8 for several years. Every once in awhile the brakes seem to grab
> somewhat harshly at the very end of a deceleration and stop. Usually
> it releases as soon as I remove my foot from the brake pedal.
> However, occasionally as I then begin to accelerate from a stop I can
> feel a slight drake and a release of the brakes. Can anyone explain
> this? Does anyone have a Lockheed manual?
>
> Marks 3
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