PREVENTIVE MAINTENANCE SCHEDULE 5 5-18 Y53-6077-1B1 (03/17) PREVENTIVE MAINTENANCE (PM) INTERVALS SYSTEM COMPONENT MAINTENANCE TASK Recommended PM Interval I A B C D E Drive Axle (Dana) Magnetic drain plug and breather (ON HIGHWAY) Clean or replace. X Magnetic drain plug and breather (OFF HIGHWAY) Clean or replace. X