TM 5-4220-209-12 &P Table 5-2.  Inspection, Checks, and Services - Continued COMPONENT OPERATIONAL OR PART INSPECTION, CHECK, OR SERVICE TIME PERIOD Mechanical filter Replace element as necessary, refer to MECHANICAL 150 hours or 6 months. FILTER (Section V). During operation in extreme heat, dusty, or sandy areas, replace 80 hours or 30 days. element as necessary.  Refer to MECHANICAL FILTER (Section V). Air filter  10 micron) Replace element as necessary, refer to TEN-MICRON 150 hours or 6 months. FILTER (Section V). During operation in extreme heat, dusty, or sandy areas, replace 80 hours or 30 days. element as necessary.  Refer to TEN-MICRON FILTER (Section V). Air purification filter Replace element as necessary, refer to PRIOR TO OPERATION (Section IV, para.  4-33) and AIR PURIFICATION FILTER (Section V). Electric wiring and Inspect for loose connections, damage, and corrosion. 150 hours or 6 months. battery cables Tighten, replace, or clean as necessary. Trap filters Clean filters, replace if damaged.  Refer to FIRST, 150 hours or 6 months. SECOND, AND THIRD STAGE TRAPS (Section V). Line strainers Clean screens and elements, replace if damaged.  Refer to 150 hours or 6 months. LINE STRAINERS (Section V). Fuel tank Check vent holes in filler cap. 150 hours or 6 months. All air hose and tubing Inspect entire air system for leaking or cracked connections Daily. and for hose/tube chaffing conditions. Clutch Check clutch for proper engagement and adjust as necessary, 150 hours or 6 months. refer to CLUTCH ADJUSTING YOKE ADJUSTMENT (Section V) and CLUTCH OPERATING ROD ADJUSTMENT (Section V). Air cooler assembly Clean air cooler assembly fins as necessary.  Refer to AIR 150 hours or 6 months. COOLER SUBASSEMBLY (Section V). Engine cooling ribs and Clean ribs and blower, refer to ENGINE COOLING 150 hours or 6 months. blower RIBS AND BLOWER (Section V). Compressor crankcase Clean crankcase filter, refer to COMPRESSOR CRANKCASE 150 hours or 6 months. filter FILTER (Section V). Engine crankcase breather Clean sieve, refer to ENGINE CRANKCASE SIEVE 150 hours or 6 months. sieve (Section V). Engine tappet clearance Check clearance and adjust as necessary, refer to ENGINE 150 hours or 6 months. TAPPET CLEARANCE ADJUSTMENT (Section V). Change 2  5-4