is my splitter's pump bad?

rcw2256 · Sep 25, 2011

yes, i was able to turn it by hand. now i know what parts i need, but i'm not sure which spider material i should buy. any ideas what material it should be made from? SOX rubber, urethane?

J_J · Sep 25, 2011

Elastomer element, known as a spider or cushion (materials available include NBR SOX rubber, Urethane, Hytrel®, and Bronze).

Lovejoy, Inc. : Products : Jaw Type Couplings

5030 · Sep 25, 2011

Personally, I'd just buy a complete coupling, both halves and the spiders and be done with it. They aren't much, maybe 15 bucks.

I'd be willing to bet it's a urethane spider. That type of coupling provides a degree of shock absorbtion and allows for misalignment to a degree.

I have 5 or 6 on the shelf in the shop. All my spray rigs use them.

rcw2256 · Sep 26, 2011

ok, just got home with a complete new coupling and spider for about $19. gonna throw it on later and hope that's all there is to it. thanks again for all your help.

J_J · Sep 26, 2011

Something caused that other coupling to fail, so check the alignment of the pump shaft and the motor shaft and tighten the bolts equally.

After you start the engine, place you hand on the coupler housing and feel for any vibration.