Most Tokheim & National pumps have the back piece on the opposite side of the reset coupling, on the computer. The two couplings on the right are for Tokheim pumps, the one on the right fits almost anything else.
Can anyone tell me if the tall Tokheim 39 has the back part, AND which is the correct reset coupling for the computer?
It has been a long time since I restored pumps Thanks Joe
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The top one with the metal tab goes to the inter-lock side of the pump. The bottom left coupling goes to the crank-back side of the pump. When you turn the computer back to zero the tab side disengages the inter-lock mechanism. The inter-lock when working does no allow more than one sale without cranking back to zero's.
Here are 2 versions of tall 39. Two pictures are the cast iron and two pictures are the stamped steel version of the computer brackets. Both are original untouched pumps and there is a difference on the crank handle side. Hope the pictures make it clear.
Always buying gas pumps and parts.
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