All the sprockets and chain guides should be inspected, with worn ones being replaced. Follow the right steps when installing a crankshaft sprocket. Once the big chain guide has been removed, put in both the right and left side short chain guides and tighten the bolts to 28 Nm (250 in. lbs.). Set the mark on the crankshaft sprocket to match the mark on the oil pump housing and oil the timing chain and guides on the engine before putting it in. Attach the left side primary chain sprocket to the chain so that the timing mark is located between the plated timing links and pull the primary chain down with the sprocket through the left cylinder head opening. During installation, let the camshaft sprockets float on the hub, then put the left side camshaft sprocket in place over the hub and make sure the link from the timing plate aligns with the crankshaft timing mark. First, put the primary chain on the water pump sprocket, match up the timing mark on the right camshaft sprocket with the link on the timing chain's plate and then position it loosely on the camshaft hub. See to it that every timing link on the chain is properly aligned with the marks on all sprockets. Fit the left side lower chain guide and tension arm, tighten their nuts to 28 Nm (250 in. lbs.) and while removing the cover of the chain guide, check and change the O-ring on the oil ring if it is worn. Install the chain guide access plug into the left side cylinder head, then tighten it to 20 Nm (15 ft. lbs.). Attach the tensioner's check ball end to the shallow end of Special Tool 8186, then gently depress the tensioner until the oil escapes. Open the top of Special Tool 8186 and insert the cylinder plunger into the part of the tool with more depth. Use downward force to reset the timing chain tensioner. Reset the tensioner carefully or else jamming may occur. Setting the tensioner into the right cylinder head, put the tensioner retaining plate at the proper location and tighten the bolts to 12 Nm (105 in. lbs.). Place the camshaft damper where it belongs on the bank, then insert a 3/8 hip extension with a breaker bar into the intake camshaft drive hub and turn the cam until the camshaft hub sits over both the damper and sprocket attaching holes on the bank. Secure the sprocket bolts with your fingers, then tighten them to 28 Nm (250 in. lbs.). Place a 3/8" square extension with a breaker bar into the left camshaft drive hub and rotate clockwise until you can put the sprocket attaching bolts in. Tighten the bolts to 28 Nm (250 in. lbs.). Turn the engine clockwise for a bit to stretch out the timing chain if required. Very gently raise the tensioner arm toward the tensioner and then gently release it to see if the tensioner is activated. After the oil pan and gasket are in place, install the timing chain cover, the crankshaft vibration damper and both cylinder head covers, then the
Camshaft Position Sensor and connect its electrical connector and finally attach the upper
Intake Manifold. Upon initial start-up, the motor may seem noisy with a reset tensioner in place, but this noise disappears after just a few seconds.