TM  10-3930-643-34 GENERAL  SUPPORT  ENGINE,  FUEL,  EXHAUST  AND  COOLING  MAINTENANCE.  (cont) 13-9. Camshaft and Timing Gears. (Sheet 6 of 8) CLEANING/INSPECTION   (cont) 9. Measure  lobes  in  camshaft  (6)  across points A-C and B-D, as shown. Replace  if  excessively  worn. 10. Measure  bearing  journals  in  camshaft (6). Replace  if  excessively  worn. 11. Inspect gears (3 and 10) in camshaft (6) for worn or damaged teeth. 12. Inspect bore of gear (3). Replace if enlarged. 13. Inspect all other parts. Refer to paragraph 2-9. INSTALLATION NOTE   Oil holes in bearings must line up with oil holes in crankcase.   To ease oil hole alinement, mark back-up nut in line with oil hole  in  bearing  before  installa- tion. 14. Using puller, expanding collet and back-up nut, install new preformed packing (19) and new bearings (18 thru 15) in rear of engine. Go to sheet 7 13-66