Ingersoll Rand Diaphragm Pump 666250-944-C

Remove balls, O-rings, and seats

Remove screw, washer, diaphragms, and washer

Ensure not to scratch or mar the surface of the diaphragm rod

Verify if the model uses a primary diaphragm and a backup diaphragm

Inspect and replace old parts with new parts as necessary

Check for deep scratches on metallic surfaces

Look for nicks or cuts in O-rings

Take precautions to prevent cutting O-rings upon installation

Lubricate O-rings with Key-Lube

Do not over-tighten fasteners, refer to torque specification block on view

Re-torque fasteners following restart

Disassembly of Plate and Gaskets

Push on the inner diameter of (111) spool to force the (109) piston out

Continue pushing the (111) spool and remove it

Check the (111) spool for scratches and gouges

Remove (123) screws and (122) O" rings

Remove (118) piston rod, (121) sleeve bushing, (119) O" rings and (120) spacers from the (101) motor body

Remove (103) sleeve and (102) O" rings

Ensure all parts are removed and accounted for

Is the motor body (101) free of all components?

Refer to part views and descriptions on pages 4 through 7 for parts identification and service kit information.

Ensure availability of ARO Smart Parts for fast repair and reduction of down time.

Provide a clean work surface to protect sensitive internal moving parts from contamination.

Empty captured material in the outlet manifold by turning the pump upside down to drain material from the pump.

Record service activity details.

Include pump in preventive maintenance program.