Notice: Failure to follow the described timing belt inspection and maintenance may result in a broken timing belt and cause severe engine damage.

Check the cold start counter (also called a heavy duty register) with a scan tool. If there are any cold starts (below -28°C or -20°F) visually inspect the timing belt for cracks. If cracks are noted, do not reuse the belt. Replace the belt and clear the cold start counter.

If the belt is okay, and is reused, do not clear the cold start counter.

Refer to the vehicle maintenance schedule for inspection intervals.

Tools Required

1. Rotate the crankshaft clockwise to 60 degrees Before Top Dead Center (BTDC).



2. Install the J 42069-10 Crankshaft Locking Tool to the crankshaft drive gear with the knurled bolt.
3. Use the J 42098 Crank Hub Torx Socket to carefully turn the crankshaft in the engine rotational direction (clockwise) until the lever of the J 42069-10 Crankshaft Locking Tool firmly contacts the water pump pulley flange.
4. Secure the moveable lever of the tool to the water pump pulley flange.

Important: Ensure that the crankshaft is not 180 degrees off TDC.

The reference marks on the camshaft gears should be aligned with the corresponding notches on the rear timing belt cover at this point. If they are not aligned, the engine is 180 degrees off.



5. Install the J 42069-1 and the J 42069-2 Camshaft Locking Tools to the camshaft gears. If the J 42069-1 or the J 42069-2 Camshaft Locking Tools do not fit into the teeth of the camshaft gears, it may be necessary to loosen the relevant timing belt idler pulley and turn the eccentric until the J 42069-1 or the J 42069-2 can be inserted.
6. Loosen the timing belt tensioner and idler pulleys.

Important: Do not move the crankshaft while the timing belt is removed.

Do not move the camshaft while the timing belt is removed.
Do not remove J 42069-1 and the J 42069-2 Camshaft Locking Tools, while the belt is removed.
7. Remove the timing belt.