To service and repair the Crankshaft Gear/sprocket as well as replace the
Timing Chain and sprockets workers must have these tools: engine technicians need four tools to perform Crankshaft Gear/sprocket replacement and Timing Chain repairs: pulley puller (J8433), crankshaft sprocket remover (J41558), crankshaft balancer and sprocket installer (J41665), and crankshaft end protector (J41816-2). Pulley puller (J8433), crankshaft sprocket remover (J41558), crankshaft balancer and sprocket installer (J41665), and crankshaft end protector (J41816-2). Start the procedure by taking out the Oil Pump followed by removal of camshaft sprocket bolts (206) and sprocket (205) and Timing Chain (208). Move on to remove bolts numbered 231 together with chain guide 232. Begin the crankshaft sprocket removal with the pulley puller (J8433), crankshaft end protector (J41816-2), and crankshaft sprocket remover (J41558). Then follow by withdrawing the crankshaft sprocket key as needed. An inspection of the Timing Chain and sprockets must precede their installation process. First reinstall the key into the crankshaft keyway before using tool (122) for key tapping from both sides until proper seat is achieved. Use crankshaft balancer and sprocket installer (J41665) to properly position the crankshaft sprocket on the crankshaft front where it must align crankshaft key with sprocket keyway. Turn the crankshaft sprocket to line up its alignment mark directly at the top position. Fasten the Timing Chain Guide (232) together with its bolts (231) until they achieve 25 nm (18 ft. Lbs.) torque while keeping bolt tops even with or below the guide surface. To install the camshaft sprocket properly you should position it correctly onto the camshaft locating pin alongside verifying that the sprocket teeth interlock with the Timing Chain then you must position the camshaft and crankshaft sprocket timing marks to align their respective alignment marks at the 6 o'clock position. Set the camshaft sprocket (205) and Timing Chain (208) into place while adjusting either the camshaft or crankshaft sprockets until the timing marks match up. Then bolt the camshaft sprocket (206) with a torque of 25 nm (18 ft. Lbs.). Check how the camshaft matches up with the crankshaft sprocket timing marks (1, 2) as the final step before reinstalling the Oil Pump.