Mark the air motor, upper retaining ring, material tube and lower retaining ring so when you reassemble the pump, the parts are in the same orientation that they were originally.

See green highlighted markings in image to the right.

Tools for this step:

• Marking pen

NOTE: The lower pump is designed so that access to the packings can be accomplished without disassembly of the inlet/outlet bodies from the main pump tube. Complete lower pump disassembly should not be necessary, in most cases you may be able to skip disassembly steps of (Item 6) outlet body, (Item 9) tube and (Item 15) inlet body.