Camshafts must be inspected orally before fitting and the camshaft end-float should be measured before dismantling. It is advisable to start with the removal of the battery by firstly disconnecting the battery cables. Place the engine at the top dead center for the number 1 cylinder, then unbolt and pull off the air cleaner assembly, and the high-pressure fuel pump as well. Next, take off the exhaust OCV mounting bolt, pull the OCV out from the vale cover and, finally, take off the valve cover off. Undo the Exhaust OCV adapter plate screws and pull out the adapter from the head of the cylinder. Some of the tasks include; Pulling off the drive belt, alternator, as well as the water pump. Once the TDC marks are lined up on the two sprockets hold the camshaft with a large wrench and then ease the camshaft phaser sprocket bolts out without fully removing them. Take out the bolt on the side of the engine Blanc There is exposed to the service hole in the timing chain cover If necessary use a clean scraper to clean the Loctite sealer off the threads. Insert a small screwdriver and loosen the tensioner ratchet; pull the chain off the sprocket, and take out the bearing cap and the upper bearing. The rest of the other camshaft cap bolts are to be loosened and the camshafts are to be removed but ensure the caps are arranged to ensure that they are placed back as they where. Take out the lifters to be back, and also to make sure they are arranged correctly and examine all the related parts for any signs of wearing. Measure camshaft endplay with dial indicator, look for bearing wear, measure the camshaft bearing journals, and measure the lobe heights. Check for the camshaft runout and check the lifters for scuffing appearance. During assembly, the lifters need to be cleaned with the engine oil, then the exhaust camshaft lower bearing followed by applying the lubricant to the camshaft lobes and journals before putting the camshaft into an appropriate cylinder head. Next, fit in the upper bearing and the bearing caps should be tightened in the proper manner. Position the timing chain to cover the camshaft sprockets, lock the camshaft in order to prevent it from rotating and then tighten the phaser sprocket bolts to their specified torque. Raise the tensioner link and fit in a new service hole bolt now. For adjustment, right, unscrew the Valve cover, and align number one cylinder to TDC, and also using a feeler gauge, check the clearance that exists between the camshaft lobes and lifters. Perform the same for the other valves simply by rotating the engine and graduating on to the next step. If clearances are beyond the set limits, it is advisable to further detaching the camshaft(s), and measuring the thickness of the lifter(s) to find out the right thickness of the new lifter(s). Once the new lifters and camshafts have been installed clearances should be checked, application of installation lubricant, and then once the components are in their proper position the bearing cap bolts should be tightened to the recommend torque.
