Camshaft Timing Chain, Sprocket, and Tensioner Cleaning and Inspection

Camshaft Timing Chain, Sprocket, and Tensioner Cleaning and Inspection




1. Inspect the timing chain guides (3, 7) and timing chain tensioner pivot arm (1) 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 (13) shoe for wear.

4. Replace the timing chain tensioner if shoe wear exceeds 1.12 mm (0.045 in) depth on the chain guide surface.

5. Inspect the timing chain (4) and actuators (2, 5) 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 timing chain oil nozzle (6) for collapse or cracks at the bolt boss. Discard and replace the oil nozzle body if it is damaged.

9. Verify oil nozzle oil flow with compressed air.

10. Inspect the timing chain tensioner (13) for scoring or free movement.

11. Inspect the timing chain tensioner washer. If damaged, replace the timing chain tensioner.

12. Inspect the crankshaft sprocket (12) for excessive wear or chipping.

13. Inspect the balancer chain (8) for wear.

14. Inspect the balancer chain guide (11) for wear.

15. Inspect the balancer chain tensioner (9) for wear.

16. Inspect the balancer shaft driven sprocket (10) for wear or chipping.