Installation Procedure
- NOTE:
Ensure the timing chain oil nozzle is rotated with the notch facing upward, and aligned with the tab on the engine block.
Timing Chain Oil Nozzle (1) - Install
- NOTE:
There are three colored links on the timing chain. The two links that align to the timing marks on the actuators are the same color. The timing link that aligns with the timing mark on the crankshaft sprocket is a unique color. Use the following procedure to line up the links with the actuators. Orient the chain so that the colored links are visible.
Loop the timing chain over the intake and exhaust camshaft actuators, aligning one of the same colored links (2) with the timing mark on the exhaust camshaft actuator (3).
- Ensure the crankshaft key is in the 12 O'clock position. Loop the timing chain onto the crankshaft sprocket (4).
- NOTE:
Timing will be established before the final install and torque of the guide bolts.
Install the timing chain guide (1) and upper bolt (2) only, finger tight.
- Install the timing chain tensioner pivot arm (3).
- Install the timing chain tensioner shoe bolt (4) finger tight.
With a suitable tool, rotate the crankshaft counterclockwise to align the timing mark on the crankshaft sprocket (1) with the timing link (2).
- NOTE:
- Continue to rotate the crankshaft counterclockwise as necessary to maintain timing alignment.
- Ensure that the alignment mark on the exhaust camshaft actuator remains aligned with the timing link.
Rotate the lower end of the fixed timing chain guide (1) into installation position and install the lower bolt (2).
- Timing Chain Guide Bolt (1) - Install [2x] - Camshaft Timing Chain and Tensioner Installation
- NOTE:
- The timing for the exhaust camshaft actuator and the crankshaft sprocket has been established.
- Applying or loosening pressure by hand between the timing chain guides will allow the chain to slip or bind during counterclockwise rotation of the camshaft.
Using a suitable tool, rotate the intake camshaft counterclockwise until the timing mark on the intake actuator (3) is aligned with the timing link (1). Maintain tension on intake camshaft until the timing chain tensioner can be installed and activated.
Timing Chain Tensioner (2) - Install - Camshaft Timing Chain and Tensioner Installation
Verify the timing links (1, 2) are aligned to the appropriate timing marks on the camshaft actuators (3, 4).
Verify the unique colored link (2) is aligned to the timing mark on the crankshaft sprocket (1).
If they are not, repeat the portion of the procedure necessary to align the timing marks.
Timing Chain Guide (3) - Install - Camshaft Timing Chain and Tensioner Installation
- Rotate the crankshaft clockwise to see if either of the actuators or the crankshaft sprocket jump timing chain teeth. If this occurs, repeat procedure to align the timing marks.
- Rotate the crankshaft slightly in a clockwise direction to allow chain to settle on the actuator and sprocket teeth. If the timing chain jumps actuator teeth, repeat procedure to align the timing marks.
Verify the timing link (1) is aligned to the timing mark on the crankshaft sprocket (2).
- Verify the adjacent timing links (4) are aligned with both timing marks (3) on the balancer shaft driven sprocket.
- NOTE:
Because of slight clockwise rotation all chain marks may be advanced slightly in relation to the actuator and sprocket marks, yet still align.
Verify the timing chain links (1, 2) are aligned to the appropriate timing marks on the camshaft actuators (3, 4).
Engine Front Cover (1) - Install - Engine Front Cover Replacement
The same colored link corresponding to the intake actuator will not initially align with the intake actuator timing mark, nor the unique colored timing chain link align with the crankshaft sprocket timing mark.
Due to the difference of crankshaft sprocket and balance shaft sprocket, timing marks on the chain will not match during every crankshaft revolution. Ensure that the marks on the sprockets are aligned appropriately before installing the timing chain.