PREVENTIVE MAINTENANCE SCHEDULE 5 5-32 Y53-6077-1B1 (03/17) PREVENTIVE MAINTENANCE (PM) INTERVALS SYSTEM COMPONENT MAINTENANCE TASK Recommended PM Interval I A B C D E Fuel and Tanks Fuel tanks Inspect tanks, brackets, hoses, and fittings for correct location, tightness, abrasion damage, and leaks; repair or replace as required. X Fuel tank breathers Check for proper function; clean the drain hoses. X Fuel tank straps Check the strap tightness; tighten to proper torque value as required: Aluminum tank: 30 Lb. ft. (41 N.m.) Cylindrical Steel tank: 8 Lb. ft. (11 N.m.) X X