Sullair Air Compressor 10B-25

Replace the fluid filter element

Replace your fluid filter element and the gasket under any of the following conditions, whichever occur first

Conditions for replacing fluid filter element

To replace fluid filter element:

Using a strap wrench, remove the old element and gasket

Apply a light film of fluid to the new gasket

Hand tighten new element until new gasket is seated in the gasket groove

WARNING: Before performing maintenance on the valve, be sure that all pressure has been relieved in the compressor sump, and all downstream pressure has been vented to the atmosphere. Also be sure that the components of the compressor are cool to the touch

All pressure relieved in the compressor sump?

All downstream pressure vented to the atmosphere?

Components of the compressor are cool to the touch?

Replace o-ring on the piston of Minimum pressure/ check valve (P/N 241581) To replace this ring, use seal repair kit no. 250020-344

Unscrew the minimum pressure/check valve (P/N 241581) from the receiver cover

Remove the hexagonal retaining cap from the main body

Remove the flat washer and heavy spring from the main body

Tap the piston assembly (with a screwdriver) from the bottom of the main body and remove. The o-ring will now be seen easily

Warning: Always ensure the compressor is turned off and fully depressurized before starting maintenance.

Unscrew end caps from the valve body and remove

Hold nut with an appropriate socket wrench and turn screw until loose

Remove all internal parts mounted on the machine screw. Remove the old o-rings and teflon seat and discard

Replace with the new o-rings and teflon seat provided in the repair kit. Apply appropriate lubricant to o-rings and valve body bore

Pre-assemble the internal parts for pilot (P) side of the valve onto the screw and install into the body

Assemble remaining internal parts for inlet (I) side to the screw as illustrated. Once assembled, install the locknut and torque to 25 in.-lbs. (2.82Nm)

Screw end caps into the valve body until tight

Place a bright light inside the element to inspect for damage or leak holes. Concentrated light will shine through the element and disclose any holes

Inspect all gaskets and gasket contact surfaces of the housing. Should faulty gaskets be evident, correct the condition immediately

If the clean element is to be stored for later use, it must be stored in a clean container

After the element has been installed, inspect and tighten all air inlet connections prior to resuming operation

Sign off on the air filter element inspection

The pipe ends are free of all deep scratches, gouges, dents, etc.

Install the retainer (1), gasket (2), and sleeve (3) on one side of the pipe as shown in Step 1

Install the remaining retainer (4) and gasket (5) on the other pipe end

Position the retainer (4) and gasket to proper pipe insertion depth (“D”)

Slide the sleeve (3) to the gasket (5) and move gasket (2) and retainer (1) into position as shown in Step 2. The pipe MUST be inserted to the proper depth (“D”) into both gaskets