DISASSEMBLING AND REPLACING THE DIAPHRAGM PUMP
1) De-pressurize the cylinder and remove all liquid from both the pressure
cylinder and tank.
2) Remove the 2 screws attaching the pivot lever to the pump shaft
(fig. 1)
3) Remove cotter pin from pump shaft and remove washer (fig. 2a). Pull and slide the shaft from opposite side,
moving it out of the way of the diaphragm pump assembly (fig. 2b & 2c).
Figure 2a
4) Unscrew diaphragm pump from pressure cylinder base. The use of a strap wrench or other mechanical
means may be neccesary (fig. 3).
Figure 3
5) Remove cotter pin from diaphragm pump assembly pivot lever connection. Remove pivot lever and
connection hardware from diaphragm pump assembly (Fig. 4a & 4b).
Figure 4a
6) Discard Diaphragm Pump Assembly.
Figure 2b
Pivot Lever
Connection
7E
Figure 2c
Figure 4b
Figure 1