Timing Chains: Removal
WARNING: This page is about a different variant/trim than selected.
- Disconnect negative battery cable. Remove camshaft rear seal. See CAMSHAFT REAR SEAL . Remove front cover. See FRONT COVER . Remove camshaft oil seal retainer. Remove crankshaft pulley and bolt. Remove crankshaft position sensor pulse wheel and reinstall pulse wheel on crankshaft with keyway located in 2.5L position. Reinstall crank bolt and pulley. Rotate crankshaft keyway to 11 o'clock, to position No. 1 piston at Top Dead Center (TDC). Ensure timing marks on camshaft sprockets are at top half of sprockets, if not, rotate crankshaft one full revolution.
- To position rear cylinder head camshafts to neutral position, rotate crankshaft keyway to 3 o'clock. Mark position of all chain drive components for reassembly reference. Remove rear cylinder head timing chain tensioner. Remove rear cylinder head timing chain tensioner arm and adapter plate (if equipped). Remove 2 attaching bolts, and remove timing chain drive. Remove rear cylinder head timing chain. Remove rear cylinder head camshaft journal thrust caps No. 1 and 5. Loosen remaining rear cylinder head camshaft journal caps 7-8 revolutions, following sequence shown. See Fig 1. DO NOT remove bolts completely. Remove roller finger followers.
- Rotate crankshaft 2 revolutions until crankshaft keyway is at 11 o'clock position. Remove crankshaft pulley bolt and washer. Remove front timing chain tensioner bolts and remove tensioner. Remove tensioner arm. Remove timing chain guide attaching bolts and remove guide. Remove front timing chain. Remove front cylinder head camshaft journal thrust caps Nos. 1 and 5. Loosen remaining front cylinder head camshaft journal caps 7-8 revolutions, following sequence shown. See Fig 1. DO NOT remove bolts completely. Remove roller finger followers. Remove timing chain sprockets.