Timing Drive Components: Installation
- 2.NOTE: It is necessary to tilt the Camshaft Holding Tool toward the rear of the engine to access the rearmost secondary timing chain tensioner bolt.
Install the RH secondary timing chain tensioner and the 2 bolts.
- Tighten to 10 Nm (89 lb-in).
- 3.
Assemble the RH VCT assembly, the RH exhaust camshaft sprocket and the RH secondary timing chain.- Align the colored links with the timing marks.
- 5.
Install the new VCT bolt and new exhaust camshaft bolt and the original washer. Tighten in 4 stages.- Stage 1: Tighten to 40 Nm (30 lb-ft).
- Stage 2: Loosen one full turn.
- Stage 3: Tighten to 10 Nm (89 lb-in).
- Stage 4: Tighten 90 degrees.
- 7.NOTE: It is necessary to tilt the Camshaft Holding Tool toward the rear of the engine to access the rearmost secondary timing chain tensioner bolt.
Install the LH secondary timing chain tensioner and the 2 bolts.
- Tighten to 10 Nm (89 lb-in).
- 8.
Assemble the LH VCT assembly, the LH exhaust camshaft sprocket and the LH secondary timing chain.- Align the colored links with the timing marks.
- 10.
Install the new VCT bolt and new exhaust camshaft bolt and the original washer. Tighten in 4 stages.- Stage 1: Tighten to 40 Nm (30 lb-ft).
- Stage 2: Loosen one full turn.
- Stage 3: Tighten to 10 Nm (89 lb-in).
- Stage 4: Tighten 90 degrees.
- 14.NOTE: The crankshaft sprocket timing mark should be between the 2 colored links.
Install the primary timing chain with the colored links aligned with the timing marks on the VCT assemblies and the crankshaft sprocket.
- 17.
Reset the primary timing chain tensioner.- 1.
Release the ratchet detent.
- 2.
Using a soft-jawed vise, compress the ratchet plunger.
- 3.
Align the hole in the ratchet plunger with the hole in the tensioner housing and install a suitable lockpin.
- 1.
- 18.NOTE: It may be necessary to rotate the crankshaft slightly to remove slack from the timing chain and install the tensioner.
Install the primary tensioner and the 2 bolts.
- Tighten to 10 Nm (89 lb-in).
- Remove the lockpin.
- 19.
As a post-check, verify correct alignment of all timing marks.- There are 48 links between the RH intake VCT assembly colored link (1) and the LH intake VCT assembly colored link (2).
- There are 35 links between the LH intake VCT assembly colored link (2) and the 2 crankshaft sprockets colored links (3).
- 21.NOTE: RH shown, LH similar.NOTE: During removal, the O-ring seal may remain on the cylinder head. If so, remove the O-ring seal from the cylinder head, inspect the seal (replace as necessary) and install the O-ring seal on the VCT housing.
Inspect the VCT housing-to-cylinder head O-ring seals for damage and replace as necessary.
- 22.NOTE: Make sure the dowels on the Variable Camshaft Timing (VCT) housing are fully engaged in the cylinder head prior to tightening the bolts. Failure to follow this process will result in severe engine damage.
Install the LH VCT housing and the 3 bolts.
- Tighten in the sequence shown to 10 Nm (89 lb-in).
- 23.NOTE: Make sure the dowels on the Variable Camshaft Timing (VCT) housing are fully engaged in the cylinder head prior to tightening the bolts. Failure to follow this process will result in severe engine damage.
Install the RH VCT housing and the 3 bolts.
- Tighten in the sequence shown to 10 Nm (89 lb-in).
- 24.
Install the engine front cover. For additional information, refer to Engine Front Cover .