Ingersoll Rand Diaphragm Pump 666250-9E4-C

Ensure spacer legs are oriented away from blocking internal ports

Lubricate and insert (111) spool

Lubricate and install (110) packing cup

Insert (109) piston into air inlet side cavity

Ensure (110) packing cup lips point outward

Install gasket and replace plate

Inspect and replace old parts with new parts as necessary

Look for deep scratches on metallic surfaces, and 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

Service is divided into two parts

Replace and reinstall components if worn or damaged

Bushing and Spacer Installation

Install one (121) sleeve bushing

Install the remaining (121) bushing

Carefully push (118) pilot rod into bushings

Remove components from the fluid section

Select the type of diaphragm to remove

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

Ensure ARO Smart Parts are available for fast repair.

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

Select the service kit for the diaphragm pump function

Select the material option for the FLUID SECTION

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