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1998 Nissan Altima SE Timing Chain Installation

February 28th, 2011 · No Comments

1. Remove spark plug wires. Set No. 1 piston at TDC on its compression stroke. Remove vacuum hoses, electrical harness, connectors, and harness clamps. Remove power steering pump, A/C compressor, and alternator belts. Remove power steering reservoir tank and reposition it for clearance. Install engine support eye bracket at right rear of cylinder head, then support engine. Remove upper right engine mount and bracket.
2. Remove rocker cover bolts in reverse order shown. Remove camshaft sprocket cover. Wipe off links of timing chain next to timing marks on sprockets. Put paint marks on timing chain, matching them with timing marks on cam sprockets and idler sprocket.
3. Remove cam sprocket bolts, cam sprockets, upper timing chain guides (if equipped) and upper timing chain. Inspect timing chain roller links for cracks or wear. If timing chain roller links are cracked or worn, replace timing chain.
4. Support lower timing chain by using a suitable tool as shown to avoid chain tensioner spring from coming out. Remove idler sprocket.
Removal (Altima) – Lower Timing Chain
1. Drain coolant by removing cylinder block drain plug and opening radiator drain cock. Drain engine oil. Remove oil pan. See OIL PAN . Remove power steering pump and position it to side. Remove idler pulley and bracket as well. Set No. 1 piston at TDC on its compression stroke.

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