The PH II was first introduced in 1983...if yours was [FONT=Verdana, Arial, Helvetica, sans-serif]manufactured prior to 1981, it will have a chromed dry/flush valve knob on the front of the toilet pump and uses kit PHRK. (20 years is about the lifespan of a PH II, so I'd recommend replacing the pump instead rebuilding).[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]The first version of the PH II was manufactured 1981 - June, 1992 ...it has tified by a plastic dry/flush knob at the front of the toilet pump and a pump shaft seal held in place by a star washer-type snap ring. [/FONT]It uses kit PHIIRK. (Unless it's post-1990, I'd seriously consider a new pump instead.)
PH II toilets made after have [FONT=Verdana, Arial, Helvetica, sans-serif]a cartridge-type pump shaft seal with a hex nut at the top of the pump housing where the piston shaft goes through. This unit uses repair kit PHRKIIC. (Rebuild it).[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]If this doesn't help, call Vic Willman at Raritan: 800-352-5630 x 6 to help you identify what you have.[/FONT]