Ingersoll Rand Diaphragm Pump 666250-E4B-C

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

Continue pushing and remove (111) spool

Check (111) spool for scratches and gouges

Remove internal parts from air section (exhaust side)

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

Inspect all parts for wear or damage

Replace worn or damaged parts with new parts as required

Lubricate diaphragm rod with Key-Lube O-ring lube

Lubricate O-ring with Key-Lube O-ring lube

Use ARO pn / 98931-T bullet (installation tool) to install O-ring on diaphragm rod

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

Remove components from the (101) motor body

Inspect all removed parts for wear and damage

Describe any issues found during inspection

Clean all parts thoroughly before reassembly

O-Ring Replacement and Sleeve Installation

Replace O-rings if worn or damaged and reinstall sleeve

Bushing and Spacer Installation

Install sleeve bushings, O-rings, and spacers

Carefully push (118) pilot rod into bushings and retain with O-rings and screws

Retain pilot rod with O-rings and screws