Thoroughly examine sprockets 4, 9, 11 and guides 2, 5, 10. If any are worn, replace them. Always use the relevant guidelines when t lifsracking on a crankshaft sprocket. If you remove them, attach the short chain guides 11 on each side, making sure the bolts are as tight as 28 Nm (250 in. lbs.). Put the crankshaft sprocket's timing mark in line with the mark on the oil pump housing 3 and apply a small amount of engine oil to the timing chain and the guides before installing them. Place the left side primary chain sprocket on the bottom part of the chain so the timing mark is between the two plated timing links 1, then guide the sprocket through the left cylinder head opening downwards. Set the camshaft sprockets to float freely on the camshaft hub, put the left side sprocket onto the camshaft hub loosely and line the time plate link to the crankshaft timing mark 3. Slide the primary chain on to the water pump drive sprocket 11, ensure the timing mark on the right camshaft sprocket is in line with the timing plated link on chain 8 and randomly arrange the chain near the camshaft hub for now. Also, make sure all chain timing plated links are straight to the timing marks found on the sprockets and put in lower chain guide 2 and tensioner arm 5 in the left side, making sure to tighten the mounting bolts to 28 Nm (250 in. lbs.). Before putting in branch pipes, inspect the O-ring in every chain guide access plug and replace if it looks worn. Fix chain guide access plugs to the top of the cylinder heads, using 20 Nm (15 ft. lbs.) of torque. Introduction of engine oil to the tensioner should be prevented by first letting the check ball 2 end of the tensioner drop into the shallow end of Special Tool 8186 3 and depressing the tensioner until the oil is expelled. Slide cylinder plunger 4 into the deeper end of Special Tool 8186 3 and apply pressure until the tensioner releases and hits the top of the same tool to guarantee it is not sticking. Observe the tensioner O-ring 2 for any damage or splits and check that the snap ring 1 is firmly in place and replace it if it is missing. Set the reset chain tensioner 1 in the right cylinder head, put the tensioner retaining plate 2 in place and tighten the bolts to 12 Nm (105 in. lbs.). After choosing the correct cylinder bank, attach 1 (if available) camshaft damper to the specified camshaft hub, then insert a 3/8" square drive extension with a breaker bar into the intake camshaft hub. Turn the camshaft until its hub and the damper holes are matched with the camshaft sprocket. Screw in the sprocket bolts and tighten each of them to 28 Nm (250 in. lbs.). Attach a 3/8" square drive extension and breaker bar to the left side camshaft drive hub and turn it clockwise until the bottom sprocket bolt holes line up for installation with the sprocket attaching bolts secured to 28 Nm (250 in. lbs.). Turn the engine slightly in a clockwise direction if needed to fix any timing chain slack and then lightly press the tensioner arm towards the tensioner so it's activated (extended). Install camshaft position sensor 2 and the electric connector, continue by adding the timing chain cover, crankshaft vibration damper and cylinder head covers and finish with the upper intake manifold. An engine loud sound may happen just after installing a reset tensioner, but it usually clears up after a few seconds. Add coolant to the radiator and attach the negative battery cable to No.1 terminal.