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| Start engine and run until engine oil temperature is min. 80 °C. |
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| Increase engine speed to about 2500 rpm for approx. 2 minutes. |
| If the hydraulic tappets are still noisy, locate defective tappets as follows: |
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| Remove cylinder head cover. |
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| Rotate crankshaft clockwise, until cam of the tappet to be checked is pointing upwards. |
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| Determine play between cam and bucket tappet. |
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| If the play is in excess of 0.1 mm, renew bucket tappet. If the play is less than 0.1 mm or no play, proceed with check as follows: |
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Note!
