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Brake Servo

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J

Jim B

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The brake servo on a friend's 79 MGB appears to be the source of a vacuum leak. Is there any way to determine if the unit is actually faulty? Is it practical to consider rebuilding the original or is a rebuilt unit from VB the best alternative?
 
Hi,First how did you determine that the servo is the source of a vacuum Leak??---Keoke
 
As stated, the leak appears to be the brake servo. Perhaps my question would have been better stated as "Is there a way to determine if a brake servo could be the source of a vacuum leak?" Thanks for the response. Will look forward to any available assistance.
 
pinch off the rubber vacuume line between the servo and the engine. The servo leaking is a major leak and cutting this off should make the engine run a lot smoother, or at least change the idle speed.
Also take a careful lap with the booster vacuume line pinched off. and see if the brakes work harder (You have to apply more perssure to stop) than with the line open. If there is no noticable change then the booster is probably bad.(it wasen't doing anything when it was hooked up)
I've never had an MGB booster apart, but I know that most other boosters contain enough spring tention to seriously injure you if you don't open them correctly. That said, I would not reccomend trying to open it up to rebuild it.
 
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