TM  10-3930-643-34 GENERAL  SUPPORT  ENGINE,  FUEL,  EXHAUST  AND  COOLING  MAINTENANCE.  (cont) 13-9. Camshaft and Timing Gears. (Sheet 4 of 8) 4. 5. 6. 7. Using an arbor press, remove gear (3), key (4) and plate (5) from camshaft (6). Press gear (3) off camshaft (6). NOTE Bearing  consists  of  two  bearings, two cups and two spacers to  be replaced as an assembly. Using a 5/8”   socket  and  socket  wrench handle, remove bolt (7), shaft (8), bearing (9), gear (10) and spacer (11). Using a 1/2” socket and socket wrench handle,  remove  four  bolts  (12),  plate (13) and gasket (14). Discard gasket (14). Remove all gasket material from mounting surfaces. NOTE Inspect camshaft bearings for wear. Inside diameter of bearings must be 2.2845 to 2.2880 inches. Replace if worn. Using puller, remove and discard bearings (15 thru 18) and preformed packing (19) from rear of engine. Go to sheet 5 13-64