TM  10-3930-638-24&P 4-2.   ENGINE   MAINTENANCE   (cont) g. Camshaft and Bearings (cont). STEP LOCATION ITEM ACTION REMARKS REMOVAL  (cont) 2 Cylinder  block, a. Two thrust plate Remove Align holes in camshaft gear with bolts (1) front bolts (1) and lock by installing crankshaft pulley nut on washers  (2) crankshaft. Then, using socket and handle turn crankshaft gear until holes and bolts are  aligned CAUTION Be careful when removing camshaft (9) so that you don’t damage bushings (10, 11, and 12) b. Camshaft (9) and Remove camshaft  gear  (6) c. Eight valve tappets Number and Number  tappets  (3)  and  their  respective (3) remove holes in cylinder block to ensure correct reinstallation DISASSEMBLY 3 Camshaft nut (4) Remove Bend tab of lock up, away from nut (4) and lock (5) 4 Camshaft  gear  (6) Remove Use puller 5 Key (7) Remove 6 Camshaft thrust Remove plate (8) CLEANING WARNING Dry cleaning solvent (P-D-680), used to clean parts is toxic and flammable. Wear protective goggles and gloves and use only in a well ventilated area. Avoid cent act with skin, eyes, and clothes and don’t breathe vapors, Do not use near open flame or exces- sive heat and don’t smoke when using it. Failure to do so could cause serious injury. If you become dizzy while using cleaning solvent,  get  fresh  air  immediately,  and  get  medical  attention.  If contact with skin or clothes is made, flush with large amounts of water. If contact with eyes is made, wash eyes with water immedi- ately,  and  obtain  medical  aid  immediately. 7 All parts Clean Use  cleaning  solvent  P-D-680.  Dry thoroughly 4-54