Page 4
November 2011
Maintenance
Ampco Pumps Company
Pump Assembly
4)
Slide the rotating seal onto the rotor hub (Figure 7) making sure to align the slots on the
seal to the drive pins in the rotor. Press the seal down until it seats inside of the rotor.
5)
Slide the rotors on to the shafts until they seat against the shaft shoulder (Figure 8).
6)
Install the Bellville washers in the rotor nuts in the orientation shown and hold them in place
using the small retaining o-rings (Figure 9). Install a rotor nut o-ring before threading the nut
onto the shaft.
Rotating Seal
Rotating Seal O-ring
Align
Figure 7: Inserting Rotating O-ring
Figure 8: Rotor Assembly
Rotor Nut
Bellville Washer
Retaining O-ring
Figure 9: Rotor Nut Assembly
Rotor Nut O-ring
Shoulder
