Sandpiper Diaphragm Pump S30B1XCAAAS000.

Pre-maintenance Safety Measures

Shut off the compressed air line

Disconnect the air line from the pump

Pilot Valve Disassembly and Inspection

Inspect O-Rings (4-C) and replace if required

Remove spool (4-D) from sleeve (4-B)

Shut off the compressed air line

Disconnect the air line from the pump

Remove plunger, actuator (29) from center of intermediate pilot valve cavity

Remove Ring, Retaining (30) and discard

Remove bushing, plunger (7) and inspect for wear

Replace bushing, plunger (7) if necessary with genuine parts

Remove O-Ring (26), inspect for wear

Shut off the compressed air line

Disconnect the air line from the pump

Remove Hex Head Cap Screws (1-F)

Remove spool part of sleeve and spool set (1-B)

Press sleeve (1-B) from body (1-A)

Inspect check valves and seats for wear and proper setting

Replace check valves or seats if necessary

Disassemble the wet end of the pump

Manually dislodge any obstruction in the check valve pocket

Clean out around the valve ball cage and valve seat area

Replace valve ball or valve seat if damaged

Pre-Maintenance Safety Measures

Shut off the compressed air line

Disconnect the air line from the pump

Wear approved eye protection and protective clothing

Flush the pump after each use for materials that tend to settle out or solidify

Flush the pump clean prior to disassembly when used for toxic or aggressive fluids