I will also add that those couplings are often very difficult to break loose. If you have a heat gun, it may be useful. If the Sperti unit is already defective, no issue with mechanical heroics.....

KK3HVG

On 05/16/2023 11:37 AM EDT Paul Sokoloff <[email protected]> wrote:

Hello,

I am trying to replace the vacuum relay and need the size of the bristol wrench for the connections so I can order one. I had purchased a multi wrench collins bristol kit several years ago with 6 sided and 4 sided wrenches but none of them fit.

Thanks, Paul WA3GFZ

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