Camshaft Gear/Sprocket: Testing and Inspection

1. Inspect camshaft gear backlash.
(a) Install the camshafts without installing the exhaust cam sub-gear.





(b) Using a dial indicator, measure the backlash.
Standard backlash: 0.020 - 0.200 mm (0.0008 - 0.0079 inch)
Maximum backlash: 0.30 mm (0.0188 inch)
If the backlash is greater then maximum, replace the camshafts.
(c) Remove the camshafts.

2. Inspect camshaft gear spring.



- Using vernier calipers, measure the free distance between the spring ends.
Free distance: 18.2 - 18.8 mm (0.712 - 0.714 in)
- If free distance is not as specified, replace the gear spring.