Timing Drive Components: Removal
CAUTION:
Since the engine is not free-wheeling, timing procedures must be followed exactly or piston and valve damage may occur.
- With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING AND LIFTING article.
- Remove the engine front cover. For additional information, refer to Engine Front Cover .
- Remove the crankshaft sensor ring from the crankshaft.
- Disconnect the 8 ignition coil electrical connectors.
- Remove the bolts and the 8 ignition coils.
- Remove the 8 spark plugs.
- Position the lobe of the camshaft up.
- Install the special tool between the valve spring coils to prevent valve stem seal damage.
- Using the special tool, compress the valve spring and remove the camshaft roller followers.
- Position the crankshaft with the keyway at the 12 o'clock position.
- Remove the timing chain tensioning system from both timing chains.
- Remove the bolts.
- Remove the timing chain tensioners.
- Remove the timing chain tensioner arms.
- Remove the LH and RH timing chains and the crankshaft sprocket.
- Remove the RH timing chain from the camshaft sprocket.
- Remove the RH timing chain from the crankshaft sprocket.
- Repeat for the LH timing chain and crankshaft sprocket.
- Remove the timing chain guides.
- Remove the bolts.
- Remove the LH timing chain guide.
- Remove the bolts.
- Remove the RH timing chain guide.
- Install the special tool.
- Remove the bolt and the camshaft gear.
WARNING:
If equipped with fire suppression system, depower the system. For important safety warnings and procedures, refer to FIRE SUPPRESSION SYSTEM
article.
CAUTION:
Only use hand tools when removing or installing the spark plugs, damage may occur to the cylinder head or spark plug.
NOTE:
Use compressed air to remove any foreign material from the spark plug wells before removing the spark plugs.
CAUTION:
If the components are to be reinstalled, they must be installed in the same positions. Mark the components for installation into their original locations. Failure to follow these instructions may result in engine damage.
NOTE:
RH shown, LH similar.
NOTE:
RH shown, LH similar.