TM 10-3930-653-14&P Fig. 4-89.  Checking Alignment of Gears. Fig. 4-90.  Installing Timing Gears and Chain. (11)  INSTALLING TIMING CHAIN TENSIONER Install the chain tensioner, lock washers and tighten the bolts   to   the   specified   torque   and   bend   the   tongue   of washers to lock the bolts. Fig. 4-91.  Installing Chain Tensioner. (12)  INSTALLING FRONT COVER (1)    Install  the  oil  thrower   on   the   crankshaft   with   the chamfered side toward front of engine. (2)    Install  the  front  cover  through  the  cover  gasket  by aligning the dowel pins on both sides. (3)  Apply lithium grease to the lip of the oil seal. (13) INSTALLING COVER, SPROCKETS AND CHAIN FOR HYDRAULIC OIL PUMP (1)  Press bearing into sprocket on pump side.  Bearings come  in  two  types,  a   one-side   shielding   type   and   an open type (not shielded on either side). Make sure that shielding type bearing is in stalled on the sprocket on the pump side with shielding face toward sprocket splines. CAUTION: Note installation direction of bearing. Fig. 4-92. (2)    Install  chain  on  sprocket,  oil  pump  and  crankshaft pulleys. (3)  Attach key to crankshaft, and then drive a wedge into clearance between crankshaft and its sprocket. Temporarily  tighten  crankshaft  bolt  to  secure  wedge  In place, and then remove bolts. 4-47