Before in order to incur an engine disassembly the engine has to be placed at TDC, then the valve covers and the timing belt have to be pulled off. When fitting the camshafts, make sure the marks you previously made on the sprockets and the engineblocks match as the camshafts are different; label them. Before de-borating the camshaft bearing caps, observe the upward pointing arrows on each cap to show the correct way of the caps and write numbers on them to distinguish the order in which you removed them. Tighten the cap bolts slowly to enable the camshaft(s) to lift evenly off the head this will take between 30-45 mins. Intake and exhaust bearing caps are identified by the I and E labels respectively and the heads must be removed together with the camshaft due to the connection of timing chain. It is recommended to retain the position of the bearing caps and any that had to be removed valve lifters for refitting. In case of inspections, one should follow the required processes for camshafts with specific specifications for V6 engines. To install the camshaft, the camshaft installation lubricant should be applied to the lobes and bearing journals, the lifters also should be replaced to their position, the timing chains have to be wrapped around the sprockets with the marks aligned. Place the bearing caps in numerical order with their arrow like pointing towards the side of the drive belt end, and gradually tightening the bolts up to the limit supply for proper seating. If it is necessary, you have to fit a new camshaft oil seal, then fit all the other parts in the reverse order to their removal. Ensure that all the timing marks are properly aligned to avoid any huge loss in the engine; the last one is to start the engine and look for any signs of leakage, and the normal functioning of the engine.
