The pump squeaks when I pump it, whats wrong?
This was most common on the PHII/PHEII units that were manufactured before the cartridge seal pump series (1200C). In the early electric drive units, the drive arm squeaked against the pump housing regardless of how much grease was applied. The cure is to convert to the 1116BW drive arm kit – the material has been changed in the drive arm to one that is compatible with the material of the pump housing. In manual units, the most common source for squeaking is the bushing area just beneath the seal. As the piston rod pumps up and down, the rod squeaks against the bushing area. The cure for this is to put SuperLube on the piston shaft; we also recommend a TWK. Another area for squeaking is when the bushing area wears and the corners of the piston scrape against the cylinder bore. Sometimes vegetable oil put into the toilet bowl will stop the squeak temporarily. For a permanent cure, the pump housing must be updated to the 1200CW.
