| Checking hydraulic bucket tappets |
| Special tools and workshop equipment required |
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| Wooden or plastic wedge |
Note! | t
| Renew defective bucket tappet complete (cannot be adjusted or repaired). |
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| Irregular valve noises when starting are normal. |
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| Start engine and run until the radiator fan has switched on once. |
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| Increase revolutions to approx. 2500 rpm for 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 the cam lob of the bucket tappet to be checked is pointing upwards. |
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| Determine play between cam lob and bucket tappet. |
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