Topic: Fuel and Vacuum Pump again


wlobb    -- 03-18-2026 @ 5:29 AM
  Hi Second question, same topic. I’m trying to rebuild my combo fuel and vacuum pump on my 8BA. Getting those diaphragms hooked on both pumps is tricky. I thought it was done and buttoned it up and the fuel side slipped out of the slot. Does anyone have a trick for getting those slots solidly onto the lever?


TomO    -- 03-24-2026 @ 12:57 PM
  Here are the instructions from the 1952 Merc Shop Manual. Rebuilding that pump is tricky, that is why I recommend that you send it to a shop that specializes in them.

Tom


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