Q: How to remove and install the timing chain and Timing Cover in 3.6L V6 engine on Dodge Challenger?
A: Timing is highly complicated, and any error is fatal to the engine, it will require replacement. This procedure should only be attempted by most experienced individuals, and any doubt regarding the skills should call an expert. Check and recheck all the works to be correct before turning on the engine. Any wet cylinder liner is a potential source of cavitation damage and must not be rotated when the crankshaft or camshafts are rotated separately, which may damage the valves. Several specialist instruments are necessary for the completion of these procedures, so check they are procured before commencement. First, that involved removing the multi-pin connector from the negative terminal of the battery, lifting the front of the car up on jackstands, and then siphoning out the engine oil and coolant. Take off the drivebelt, the drivebelt tensioner, idler pulley, thermostat housing and upper radiator hose and the heater hose from the water pump. Loosen and clear heater core supply pipe, remove the power steering pump, crank balancer, and all the valve covers being careful not to let the magnetic timing wheels touch any magnet. Take out the lower and upper oil pans, timing cover mounting bolts and they should be able to pry the cover gently. To do this, just pinch the crankshaft pulley bolt, and then rotate the crankshaft until both timing marks are exactly aligned and are on the TDC number one on the exhaust stroke. If camshaft phasers are add-on parts, make sure that the marks on phasers are aligned with the plated links. Compress the chain tensioners, remove timing gear splash shield, oil pump tensioner and the oil pump sprocket, mark the oil pump for the direction of the chain installation. The camshaft phaser lock tools should be installed, the nuts on the oil control valves to be loosened, and, at last, the camshaft phasers and timing chains wanted. If located, then check the timing chain dampener for wear and also clean the timing chain and sprockets if necessary and replace them. Before turning the engine on, try to turn the crankshaft at least 2 turns round as you apply resistance at the floor end. Reset and renew the gasket material and sealant, place the chain guides and tensioners then consider the keyway on the crankshaft. Synchronize the primary chain on the crankshaft sprocket then apply clean engine oil on the sprockets and chain and by positioning the marks install the assembly. Strengthen the tightened idler sprocket fastener and put the primary chain guide and tensioner and take off the special tool from the tensioner plunger. For the left side camshaft phaser and the right side camshaft phaser, put the oil control valve and fix it properly and tight. In the position as installed, oil pump timing chain, timing chain tensioner, sprocket, and splash shield should align all special marks, rotate engine for recheck the alignment. I have fitted new coolant housing and water pump housing gaskets, applied RTV sealant to the cover, I then bolt it to the alignment dowels. Leverage up the cover bolts in a star like fashion and perform other connections in the reversed manner. Last, include oil or coolant, engage the engine, and search for any dripping.