Timing Chains: Installation
WARNING: This page is about a different variant/trim than selected.
- Install timing chain sprockets. Install crankshaft pulley washer and bolt. Ensure crankshaft keyway is at 11 o'clock position. Remove crankshaft pulley bolt and washer. Lubricate camshafts with Engine Assembly Lubricant (D9A2-19579-D). Ensure camshaft timing marks are aligned. Install front cylinder head timing chain guide, and tighten to specification. Install timing chain. Ensure colored links of timing chain and timing marks on timing sprocket are aligned. See Fig 1-Fig 3
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NOTE: Timing chain tensioners must be compressed and locked before reinstallation. Failure to compress tensioners may cause engine damage.
- Position front timing chain tensioner in a soft-jaw vise. Hold tensioner ratchet lock mechanism away from ratchet stem with a small pick. DO NOT release ratchet stem until tensioner piston is fully bottomed in its bore. Slowly compress timing chain tensioner. Piston should retract with minimal force. Install paper clip in tensioner to retain piston. See Fig 4. Install timing chain tensioner arm, tensioner adapter plate and tensioner, and tighten to specification. See TORQUE SPECIFICATIONS .
- Install rear cylinder head timing chain guide, and tighten to specification. Install crankshaft sprocket. Install timing chain. Ensure colored links of timing chain and timing marks on front of camshaft sprockets are aligned. See Fig 1. Position rear timing chain tensioner in a soft-jaw vise. Hold tensioner ratchet lock mechanism away from ratchet stem with a small pick. DO NOT release ratchet stem until tensioner piston is fully bottomed in its bore. Slowly compress timing chain tensioner. Piston should retract with minimal force. Install paper clip in tensioner to retain piston. See Fig 4. Install timing chain tensioner arm, tensioner adapter plate and tensioner, and tighten to specification. See TORQUE SPECIFICATIONS .
- Ensure crankshaft keyway is at 11 o'clock position. Lubricate rocker arms with Engine Assembly Lubricant (D9AZ-19579-D), and install rocker arms onto front cylinder head. Ensure rocker arms are installed in their original positions. Tighten camshaft journal cap bolts following sequence shown, in 3-4 passes to specification. See Fig 5.NOTE: Align Roller Finger Follower (RFF) marks on back side of camshaft sprockets before installing roller finger followers. Roller finger followers are rocker arms.NOTE: Camshaft journal thrust caps must be installed and tightened last to prevent damage to remaining camshaft journal caps.
- Install crankshaft pulley bolt and washer. To position rear cylinder head in neutral position, rotate crankshaft 2 revolutions, and position crankshaft keyway at 3 o'clock. Lubricate rear cylinder head rocker arms with assembly lube, and install in their original positions. Tighten camshaft journal cap bolts following sequence shown, in 3-4 passes to specification. See Fig 5.NOTE: Align Roller Finger Follower (RFF) marks on back side of camshaft sprockets before installing roller finger followers. Roller finger followers are rocker arms.
- Remove locking pins from front and rear timing chain tensioners. Remove crankshaft pulley bolt and washer. Install camshaft oil seal retainer. Install camshaft oil seal. Ensure timing marks on camshaft sprockets, crankshaft sprockets and timing chains are aligned. Install front cover. See FRONT COVER . To complete installation, reverse removal procedure. Tighten bolts/nuts to specification. See TORQUE SPECIFICATIONS .