To get started with changing the Timing Chain tensioner, collect these tools at first: camshaft holding tool (J 44221). You should start by taking off the camshaft cover and the engine front cover. Make sure to turn the Crankshaft clockwise until #1 Piston reaches the top dead center on the compression stroke, with the delphi writing on the exhaust camshaft actuator flat against the Cylinder Head to cam cover surface. Put the camshaft holding tool (J 44221) onto the camshafts from behind. By following the timing marks, put marks on the chain links next to the exhaust camshaft position actuator sprocket, intake camshaft sprocket, and Crankshaft sprocket. Take some tension off the Timing Chain by pressing the tensioner shoe inward and then put a tee into the tensioner to keep the shoe that way. Take out the Timing Chain tensioner bolts, then take off the Timing Chain tensioner from the engine. With installation, place the Timing Chain tensioner onto the engine, and install the Timing Chain tensioner bolts, making sure they are tightened to 25 nm (18 ft. Lbs.). Once you take the tee out of the Timing Chain tensioner, you will let the Timing Chain tighten and then remove the camshaft holding tool (J 44221) from the camshafts. Make sure the Timing Chain's marked links are matched to the timing marks on the exhaust camshaft position actuator sprocket and the intake and Crankshaft sprockets. Once everything else is complete, put the engine front cover and the camshaft cover both in place.