brakes servo locking brakes on !! help

[heckflosse]

Originally Posted by Tony Barrett

There are two makes of 'Lockheed' servos on the market. There is one type, the cheaper, that you have, that causes problems with Amazons. Buy the 'genuine' AP, only slightly dearer, then no problem.
I don't want to argue about the info, but experience does sometimes beat the labels and the pound notes.
An interesting anomally, a friend has sold over five hundred of the cheaper ones, to fit Triumph sports cars, and had no reported problems. Also, one of the cheaper ones that I had, gave trouble on an Amazon, but when it was fitted to an Alfa no trouble!
It doesn't really matter why, and the reason may never be found, but you now have the info to save money, and time, and be safe.
Tony Barrett
The Old Volvo Man

I've had this problem on an Austin Westminster, with the brakes gradually dragging . They use a very similar one to an Amazon, with a vacuum tank as back up.
Tried a rebuild kit, no joy, so went for a cheaper servo, which has been fine evere since.
My advice is buy a new one, not NOS that has been lurking unsold for decades.
Hope this helps, Jim.