TM 10-7310-281-13&PMODERN BURNER UNIT (MBU)0013 00OPERATOR SERVICES0013 00-1REPLACE FUEL FILTERTHIS SECTION COVERS:Replace (300 Hours)INITIAL SETUPMBU shut-down and cooled (WP 0005)Drain MBU Fuel Tank (WP 0011)Maintenance LevelMaterials/PartsOperatorO-Ring (WP 0061, Table 1, Item 3)Tools and Special ToolsRags (WP 0060, Table 1, Item 1)Cross tipped Screwdriver (WP 0038, Table 2, Item 1) Cleaning Brush (WP 0060, Table 1, Item 2)Replace in-tank fuel filter. Replace the in-tank fuel filter on the regulator assembly more often in dustyor extremely humid conditions or whenever recommended as part of a troubleshooting procedure.WARNING!Fire / Fuel ContaminationBefore proceeding with this procedure, the MBU fuel tank must be drained completely asdescribed in work package 0011. Have rags on hand to clean up fuel spillage that mayoccur to prevent contamination. Do not perform this procedure near an open flame toprevent fire.Remove four screws(1) holding fuel regulator assembly (2) to tank (3).Remove fuel regulator assembly (2) from tank (3) as shown.Discard O-ring (7).Pull fuel filter (4) off the regulator shaft (5).Install new fuel filter(4) onto regulator shaft (5).Lubricate with a small amount of fuel and install new O-ring (7).Check the fuel regulator air vent (6) for dirt or debris and clean with a small soft-bristle brush. Do not useany tool that will force the debris into the filter surface or damage it in any way.Re-install fuel regulator assembly(2) into tank (3) and secure with four screws (1).
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