TIMING BELT
Check closely the entire timing belt.Replace it if any of the following conditions is found.
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- Hardened back side rubber.
Back side surface is glossy, lacking in elasticity, and so hard that no impression is left when pressed with fingernail.
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- Cracks in back rubber surface.
- Cracks in canvas.
- Cracks in tooth roots.
- Cracks in belt sides.
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- Abnormally worn belt sides;
NOTE: belt sides are normal if they have “knife-cut”
surfaces.
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- Badly worn teeth.
- Initial stage: Canvas is worn (canvas fiber is fluffy; teeth look whitish due to worn-out rubber; canvas texture is unclear)
- Second stage: Canvas is lost and rubber is exposed (tooth width narrows down)
- Missing tooth.
AUTO-TENSIONER
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- Check the auto-tensioner for leaks from the sealed sections.
Replace it if leaky.
- Check the rod end for wear and other damage.
Replace the auto-tensioner if the rod is badly worn or damaged.
- Measure the extension length of the rod.
If it is not within the standard value range, replace the auto-tensioner.
Standard value: 12 mm
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- Press the rod with a force of 98 to 196 N and measure the amount of retraction. If the measurement exceeds the standard value, replace the auto-tensioner.
Standard value: 1 mm maximum