Use a drill to enlarge the existing unthreaded holes to 13/64 inch diame-
ter. Tap the two holes 1/4-20 UNC through the pump impeller at the
Remove cotter pin (11), castellated plain nut (12), and flat washer (13).
Cotter pin (11)
Castellated plain nut (12)
Flat washer (13)
Using a fabricated wheel puller (fig D-3) (14), screw two 1-1/4 inch long
Wheel puller (14)
screws (fig D-3) (15) into the two tapped holes in pump impeller (16).
the impeller from the pump shaft. Removal of the
Alternately tighten the screws in the holes until pump impeller (16) is
pump impeller by the procedure described below will
Pump impeller (16)
released. Slide pump impeller (16) off the shaft (17). Unscrew and remove
prevent damage to the pump shaft seal assembly.
the two screws (15) and wheel puller (14).