TM   10-3930-643-20 PRELIMINARY   PROCEDURES.   (cont) 3 - 5. Organizational   Preventive   Maintenance   Checks   and   Services   (PMCS).   (cont) Organizational   Preventive   Maintenance   Checks   and   Services ITEM TO BE INSPECTED PROCEDURE: CHECK FOR AND HAVE REPAIRED, FILLED, OR ADJUSTED AS NEEDED PERFORM ALL OPERATOR PMCS FIRST Q-Quarterly A-Annually H-Hours I t e m    I n t e r v a l No. Q A H Equipment Procedure 13 l AIR  CLEANER  ASSEMBLY Change   elements   annually. Refer   to   paragraph   4-18. 14 l AXLE  ASSEMBLY FRONT AND REAR Inspect   axle   assemblies   for cracks   and/or   other   damage.   If replacement   is   indicated,   notify Direct   Support. 3-12