If you start to hear knocking from your pump, then you need to replace your bearing inserts. Check crank to make sure it is not damaged.

Old Part Numbers: 145F, FDT91/2" MPT x 5/8"-14 JIC female flare swivel x 9.5" long. 1/2" inside hose diameter.Extra DetailsIf you have a Rolair unit, this fits the 6590HK18, 4090HK17, 1040 Series, and 2040 Series air compressors.Technical Documents

Complete hollow-style air filter assembly for air compressors, including filter element. 1/2" threaded inlet. Takes the #14-SOL Filter Element. Replacing the pump's air filter regularly is important to maintain the performance and longetivity of your air...