Sullair Portable Air Compressor 185D DPQ KU4F

Clean the return line orifice and check the strainer

Change the compressor fluid filter

Check the Engine Operator’s Manual for service requirements

Check the fuel filter for water

Confirm that the receiver tank cover bolts are tightened to 60 lbf ft (81 N m)

Sign off on the compressor maintenance

Check the fuel filter for water

Drain water from the fuel/water separator

Place a container for collecting the fluid under the drain

Open the drain valve by turning it two turns to the left. Any water in the separator bowl will flow out through the drain

When the fluid flowing from the drain changes from water to fuel, close the drain valve by turning the valve to the right until tight

Replace the fuel filter of the fuel/water separator

Remove the old element with a strap wrench

Clean the gasket seating surface

Apply a light coating of fluid to the new gasket

Hand tighten the new element until the new gasket is seated

Continue tightening the element by hand an additional 1⁄2 to 3⁄4 turn

Restart the compressor and check for leaks

Sign off on the fluid replacement

Insert a bright light source into the element and look for any light leaks which indicate the presence of damage (holes, cracks, etc.)

Inspect all gaskets and gasket contact surfaces of the housing and replace any damaged ones

Store clean elements for later use in a clean container

After installing the element, inspect and tighten all air inlet connections before operating the compressor

Warning: Ensure the compressor is turned off and cooled down before starting the procedure

Loosen and remove the air filter and cover

Remove the primary and optional secondary elements

Clean the body, inside and out, with a damp cloth

Reinstall (if clean) or replace the secondary element if installed

Replace the new primary filter element

Reposition the cover and lock it into the position

Reset the filter restriction indicator (if equipped)

Sign off on the air filter replacement