Before the cylinder heads are removed, making sure the
Timing Chain is out, do not try to rotate the camshafts or
Crankshaft separately, as it might end in valve or piston damage. If you don't use #8379 tool while removing the cam sprocket, timing chains or camshaft, this will make the ratchet in your hydraulic tensioner overextend. This means you'll have to remove the timing chain cover to reset the tensioner ratchet. Remove the cylinder head cover as the first step. Place the engine at TDC, cylinder No. 1, so the camshaft sprocket marks are pointed at the 12 o'clock position. Attach a mark to the back one of the secondary timing chain and one on the camshaft sprocket that has V6 marked. Do not press or hold down on the camshaft target wheel or you may do significant damage that makes the car unusable. Leave the camshaft sprocket bolt still in place, but allow it to turn more freely so the sprocket is secure. Make sure the timing chain tensioners are secured before taking off the camshaft sprockets; if they aren't, they can move which means the timing chain cover has to be taken off for repair. Don't push a screwdriver or any other tool through the narrow part of the chain to keep it from damaging the tensioners. Put tool 8379 in the chain groove, just under the tensioner arm's pin and then tap on the tool so the chain is wedged between the strands and the tool. Take out the
Camshaft Position Sensor. Remove the drive sprocket bolt and sprocket after holding the camshaft with tool 8428 camshaft wrench. Unscrew each of the cap retaining bolts a half turn at a time, starting at the outside, so the pressure on the bearing caps is relieved. Do not attempt to strike or stamp the camshaft bearing caps, because this may cause a severe impact. Before taking out the camshaft, make a mark on the
Rocker Arms so they do not slide down when removed. After that, remove the bearing caps and then the camshaft.