TM  10-3930-643-34 GENERAL  SUPPORT  ENGINE,  FUEL,  EXHAUST  AND  COOLING  MAINTENANCE. 13-9. Camshaft and Timing Gears. (Sheet 3 of 8) REMOVAL NOTE   Crank engine until timing marks on camshaft gear, idler gear and crankshaft gear are alined, as shown  before  removing  camshaft.   Camshaft must be supported along its length during removal to prevent  cam  lobes  from  damaging bearings. 2. Using a 1/2”   socket and socket wrench handle, remove two bolts (2) in front of engine, 3. Remove items 3 thru 6 as an assembly. Go to sheet 4 13-63

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