Timing Drive Components: Installation
All engines
- Install the tensioners.
- Tighten to 10 Nm (89 lb-in).
- Install the camshaft sprockets and chain as an assembly.
- Install the special tool.
- Install the camshaft spacer, washer and bolt.
- Install the camshaft gear, washer and bolt.
- Tighten the bolts in 2 stages:
- Stage 1: Tighten to 40 Nm (30 lb-ft).
- Stage 2: Tighten an additional 90 degrees.
- Compress each plunger, using an edge of a vise.
- Using a small screwdriver or pick, push back and hold the ratchet mechanism.
- While holding the ratchet mechanism, push the ratchet arm back into the tensioner housing.
- Install a paper clip into the hole of each tensioner housing to hold the ratchet assembly and plunger in during installation.
- Remove the tensioner from the vise.
- Inspect the RH and LH timing chain tensioners.
- Install new tensioners as necessary.
- Compress each tensioner plunger, using a vise.
- Install a retaining clip on each tensioner to hold the plunger in during installation.
- If the copper links are not visible, mark one link on one end and one link on the other end, and use as timing marks.
- Install the timing chain guides.
- To install, tighten to 10 Nm (89 lb-in).
- Rotate the LH camshaft sprocket until the timing mark is approximately at the 12 o'clock position. Rotate the RH camshaft timing sprocket until the timing mark is approximately at the 11 o'clock position.
- Using the special tool, position the crankshaft so the number one cylinder is at TDC.
- Position the LH (inner) timing chain on the crankshaft sprocket, aligning the copper (marked) link with the timing mark on the sprocket.
- Install the LH timing chain onto the camshaft sprocket, aligning the copper (marked) link with the timing marks on the sprocket.
- Position the LH timing chain tensioner arms on the dowel pin and install the LH timing chain tensioner.
- To install, tighten to 25 Nm (18 lb-ft).
- Remove the retaining clip from the LH timing chain tensioner.
- Remove the retaining clip from the LH timing chain tensioner.
- Position the RH (outer) timing chain on the crankshaft sprocket, aligning the copper (marked) link with the timing mark on the sprocket.
- Install the RH timing chain onto the camshaft sprocket, aligning the copper (marked) link with the timing marks on the sprocket.
- Position the RH timing chain tensioner arms on the dowel pin and install the RH timing chain tensioner.
- To install, tighten to 25 Nm (18 lb-ft).
- Remove the retaining clip from the RH timing chain tensioner.
- Remove the retaining clips from the RH timing chain tensioner.
- Make sure that the copper (marked) chain links are lined up with the dots on the crankshaft sprockets and the camshaft sprocket.
- Install the crankshaft sensor ignition pulse ring.
- Install the camshaft roller followers. For additional information, refer to CAMSHAFT ROLLER FOLLOWER .
- Install the engine front cover. For additional information, refer to ENGINE FRONT COVER .
NOTE:
Compress the tensioner and install the retaining pin.
NOTE:
LH tensioner shown, RH tensioner similar.
CAUTION:
Timing marks must be at the 12 o'clock position and indexed at the 6 o'clock position.
NOTE:
Do not tighten the bolt at this time.
NOTE:
Do not tighten the bolt at this time.
Engines with ratcheting tensioners
CAUTION:
Timing chain procedures must be followed exactly or damage to valves and pistons will result.
CAUTION:
Do not compress the ratchet assembly. This will damage the ratchet assembly.
NOTE:
LH shown, RH similar.
Engines with non-ratcheting tensioners
CAUTION:
If one or both tensioner mounting bolts are loosened or removed, the tensioner-sealing bead must be inspected for seal integrity. Any cracks, tears, cuts or separation from the tensioner body or permanent compression of the seal bead, will require replacement of the tensioner.
CAUTION:
Timing chain procedures must be followed exactly or damage to valves and pistons will result.
NOTE:
LH shown, RH similar.
All engines
CAUTION:
Unless otherwise instructed, at no time when the timing chains are removed and the cylinder heads are installed is the crankshaft or the camshaft to be rotated. Severe piston and valve damage will occur.
CAUTION:
Rotate the crankshaft counterclockwise only. Do not rotate past position shown or severe piston or valve damage will occur.
NOTE:
The number one cylinder is at top dead center (TDC) when the stud on the engine block fits into the slot in the handle of the special tool.
NOTE:
The LH timing chain tensioner arm has a bump near the dowel hole for identification.
Engines with ratcheting tensioners
Engines with non-ratcheting tensioners
All engines
Engines with ratcheting tensioners
Engines with non-ratcheting tensioners
All engines