Reply To: scott atwater disassemble

[frankr]

Requirements of a wobbler pump rotor are:

1 Must be a snug fit on the eccentric cam

2. Rotor must just flush with top of housing, not above or below.

3. Outside of rotor must just touch the inside of the housing at some point. Other side should have a space between rotor and pump housing. If you rotate the shaft, that space will move from one side to other, then disappear, then reappear and the process repeats itself. It is that space moving from one side to the other that fills with water, moving it from intake side to outlet side.

4. No excess wear in cavity or top plate. (Sand & silt wears the out)