26
Review all SAFETY Information in Section A.
Follow the instructions on all tags, labels and decals attached to the pump.
This pump requires little service due to its rugged, minimum-maintenance design.
However, if it becomes necessary to inspect or replace the wearing parts, follow these
instructions which are keyed to the sectional views (see Figures 10 and 11 on page 21
& 23), and the accompanying parts lists.
Many service functions may be performed by draining the pump and removing the back
cover assembly. If major repair is required, the piping and/or power source must be
disconnected. The following instructions assume complete disassembly is required.
Before attempting to service the pump, disconnect or lock out the power source and
take precautions to ensure that it will remain inoperative. Close all valves in the suction
and discharge lines.
For power source disassembly and repair, consult the literature supplied with the
power source, or contact your local power source representative.
14. PUMP AND SEAL DISASSEMBLY
AND REASSEMBLY
Before attempting to open or service the pump:
1. Familiarize yourself with this manual.
2. Disconnect or lock out the power source to ensure that the
pump will remain inoperative.
3. Allow the pump to cool if overheated.
4. Check the temperature before opening any covers, plates, or
plugs.
5. Close the suction and discharge valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.
WARNING!
Use lifting and moving equipment in good repair and with adequate
capacity to prevent injuries to personnel or damage to equipment.
WARNING!
Back Cover and Wear Plate Removal
(Figure 10, Page 21)
The wear plate (16) is easily accessible and may be serviced by removing the back
cover assembly (23). Before attempting to service the pump, remove the pump casing
drain plug (17) and drain the pump. Clean and reinstall the drain plug.
Remove the hand nuts (21) and pull the back cover and assembled wear plate from the
pump casing (1). Inspected the wear plate, and replace it if badly scored or worn. To
remove the wear plate, disengage the hardware (19 and 20).
Inspect the back cover O-ring (18) and replace it if damaged or worn.
Suction Check Valve Removal
(Figure 10, Page 21)
If the check valve assembly (11) is to be serviced, remove the check valve pin (32),
reach through the back cover opening and pull the complete assembly from the suction
flange (3).