AR 252 Diaphragm Kit
Part # AR4327 is the diaphragm rebuild kit for the AR 252 diaphragm pump. AR recommends changing the diaphragms every 500 hours or three months, whichever comes first.
Part# AR43279 will also rebuild the Hypro D252 pump.
When rebuilding the pump diaphragms follow all factory torque specifications. Accumulator diaphragm should be set to 20% of pump operating pressure. Replacing diaphragms will require new oil. Replace with 30 weight non-detergent.