Disconnect the cable from the negative terminal of the battery, drain the cooling system and engine oil, and remove the alternator. Next, take out the power steering pump, followed by the water pump and the camshaft position sensor. Disconnect the hoses from the coolant air bleed pipe and all hoses from the coolant manifold, securing them out of the way with wire. Use the correct power steering pulley removal tool to access the bolt behind the pulley, or alternatively, unbolt the power steering pump for clearance. Remove the crankshaft balancer and one of the belt tensioner bolts to access the timing chain cover bolts. Detach the timing chain cover from the block, taking care not to damage it, and remove the oil pump. Measure the timing chain freeplay; if it exceeds 5/8 inch, replace the chain and both sprockets. Loosen the camshaft sprocket bolts, rotate the crankshaft until the timing marks align, and verify that the number one piston is at TDC. Remove the camshaft sprocket and chain as an assembly, inspecting for damage or wear. If necessary, remove the crankshaft sprocket carefully. For installation, replace timing chains as a set with the camshaft and crankshaft sprockets, and use a gasket scraper to clean old gasket material from the cover and engine block. Align the crankshaft sprocket with the Woodruff key and press it onto the crankshaft, ensuring not to damage it. Loop the new chain over the camshaft sprocket, aligning the timing marks correctly, and apply thread locking compound to the camshaft sprocket bolt threads before tightening. Lubricate the chain with clean engine oil, install the oil pump and oil pickup tube, and replace the crankshaft front oil seal if needed. Install the timing chain cover loosely with a new gasket, aligning it properly by measuring the distance from the
Oil Pan rail to the timing chain cover on both sides and adjusting as necessary. Once aligned, tighten the cover bolts, apply RTV sealant where the timing chain cover meets the cylinder block, and install the oil pan. Complete the remaining installation steps in reverse order, then add coolant and oil to the engine, running it to check for leaks.