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Cummins N14 – Cylinder Liners – Cleaning

Remove the crevice seal. Remove the two o-rings.

Caution: Do not use a hone, deglazing, or prebrushing to clean the cylinder liners. Abrasives can damage the
finish and the pattern and can contaminate the liner.
Warning: Wear eye protection. Make sure the wire brush is rated for the RPM being used if the brush is motor
driven.
Use a high quality steel wire brush to clean the liner flange seating area.
Use a fine, fibrous abrasive pad such as Scotch-Briteா 7448, Part No. 3823258, or its equivalent to remove the
remaining carbon.

Warning: When using a steam cleaner, wear protective clothing and safety glasses or a face shield. Hot steam
can cause serious personal injury.
Use a non-metallic bristle brush, detergent soap, and warm water to clean the inside diameter.
Use a steam cleaner or a solvent tank to clean the liners.
Dry with compressed air.

Use clean 15W-40 oil to lubricate the inside diameter of the liners.
Allow the oil to soak in the liner for 5 to 10 minutes.

Continue to lubricate the inside of the liners and wipe clean until the paper towel shows no gray or black res-
idue.
NOTE: Use lint-free paper towels to wipe the oil from the inside of the liners.