1. Check:
- rocker arm. Damage/wear → Replace.
- rocker arm lobe (1)
- valve adjuster (2). Excessive wear → Replace.
2. Check: rocker arm shaft
Blue discoloration/excessive wear/pitting/scratches → Replace or check the lubrication system.
3. Measure: rocker arm inside diameter (a)
Out of specification → Replace.
- Rocker arm inside diameter: 14.036 mm
4. Measure: rocker arm shaft outside diameter (b)
Out of specification → Replace.
- Rocker arm shaft outside diameter: 13.95 mm
5. Calculate: rocker-arm-to-rocker-arm-shaft clearance
Note: Calculate the clearance by subtracting the rocker arm shaft outside diameter from the rocker arm inside diameter.
Above 0.086 mm → Replace the defective part(-s).
Rocker-arm-to-rocker-arm-shaft clearance:
- 0.009-0.033 mm
- Limit: 0.086 mm