Sandpiper Diaphragm Pump S30B1S2AAAS000.

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

Was the pump flushed after use with materials that settle or solidify?

Was the pump flushed clean prior to disassembly when used with toxic or aggressive fluids?

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 O-Ring (1-D) and replace if necessary

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

Inspect diaphragm plates for issues

Inspect intermediate bearings for issues

Inspect diaphragm rod for issues

Clean or repair diaphragms if appropriate