Procedures

Camshaft Timing Chain and Sprocket Cleaning and Inspection (LDK, LHU)

1. Inspect the timing chain guides (1, 4, 6) for cracking or wear.





2. Replace the timing chain guides if wear exceeds 1.12 mm (0.045 in) depth on the chain guide surface.
3. Inspect the timing chain tensioner shoe for wear.
4. Replace the timing chain tensioner shoe if wear exceeds 1.12 mm (0.045 in) depth on the chain guide surface.
5. Inspect the timing chain (2) and actuators (3, 8) for wear.
6. Inspect the camshaft actuator faces for signs of movement.
7. Inspect the camshaft actuator teeth and chain for signs of excessive wear, chipping, or seizure of the timing chain links.
8. Inspect the oil nozzle body (5) for collapse or cracks at the bolt boss. Discard and replace the oil nozzle body if it is damaged.
9. Inspect the timing chain tensioner (7) for the scoring or free movement.
10. Inspect the timing chain seal for damage. If damaged, replace the seal.