Re: Fuel Pump rebuild/test
Typical is the two piece arm. If the hole is larger than the retaining pin the kit should have a small sleeve that is also in the hole, the retaining pin passes through the sleeve.
Just a rebuilding hint after assembly check out the end play, if excessive a washer or shrink the sides of the housing so the arm moves freely up and down but not sideways. Sideways motion will decrease pump output.
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