Procedure includes checking the drive gear wear and backlash, end play, sprocket and chain wear, overhead cam drive sprocket(s), drive belt(s), belt tension, tensioners, camshaft reluctor ring/tone-wheel, and valve timing components and should include
- conducting a visual inspection of all associated components, including seals
- using specialized tools
- following service manuals and manufacturer guidelines.
Process/Skill Questions:
- How often should the timing belt be checked, and when should it be replaced?
- What is the function of timing belt tensioners?
- What is variable valve timing?