Oberdorfer pump imp

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Ron Hill

Guys : On an Oberdoffer you don't really need that "C" clip, except it makes it easier to pull the shaft out.  If you only need to replace the impeller just take a long nose pliers and pull out the old impeller. 
To install the new impeller just line up the flat spot on the impeller and shaft, squish the blades and slide it on.  Lightly grease the pump face plate and reinstall it.  Which ever way you squish the blades doesn't matter as they straighten out when the engine starts.

A few thoughts.
Ron, Apache #788