TM 10-3930-671-24 SECTION 6 - Charging System Charging System..............................................................................................................................................F-159 SECTION 7 - Preventive Maintenance Daily Preventive Maintenance Schedule..........................................................................................................F-163 Dry-Type Replaceable Air Filter .......................................................................................................................F-163 PCV System.....................................................................................................................................................F-164 Check Oil Pressure ..........................................................................................................................................F-164 Every 50 Hours.................................................................................................................................................F-165 Every 250 Hours...............................................................................................................................................F-166 Every 400 Hours...............................................................................................................................................F-166 Every 500 Hours...............................................................................................................................................F-166 SECTION 8 - Engine Repair and Overhaul Cylinder Head...................................................................................................................................................F-167 Disassembly of Cylinder Head .........................................................................................................................F-168 Valve Guides....................................................................................................................................................F-169 Valve Seat Inserts (if supplied) ........................................................................................................................F-169 Valve Guide Data .............................................................................................................................................F-170 Valves ..............................................................................................................................................................F-171 Valve Springs ...................................................................................................................................................F-172 Rocker Arms .................................................................................................................................................... F-i 73 Valve Push Rods..............................................................................................................................................F-173 Checking Bore Wear ........................................................................................................................................F-173 Preparing Cylinder Walls for Re-Ringing or Reboring ..................................................................................... F-i 73 Pistons .............................................................................................................................................................F-175 Piston Pins .......................................................................................................................................................F-176 Connecting Rod ...............................................................................................................................................F-176 Piston and Connecting Rod Assembly.............................................................................................................F-176 Piston Rings .....................................................................................................................................................F-177 Recommended Method of Installing Piston Rings ...........................................................................................F-177 Crankshaft and Main Bearings.........................................................................................................................F-178 Bearings ...........................................................................................................................................................F-179 Camshaft..........................................................................................................................................................F-180 Tappets ............................................................................................................................................................F-181 Rear Crankshaft Oil Seals  ...............................................................................................................................F-181 Oil Pump ..........................................................................................................................................................F-182 Timing Gears  ...................................................................................................................................................F-183 Crankshaft End Play ........................................................................................................................................F-185 Flywheel and Flywheel Housing.......................................................................................................................F-185 Reassembling Engine ......................................................................................................................................F-186 Installing Head .................................................................................................................................................F-186 Installing Oil Pan ..............................................................................................................................................F-188 SECTION 9 - Deleted SECTION 10 - Torque Specification  .............................................................................................................................F-189 SECTION 11 - Units and Clearance Data......................................................................................................................F-191 F-194