| Checking hydraulic compensation elements |
Note | t
| The hydraulic compensation elements cannot be repaired. |
| t
| Irregular valve noise during starting is normal. |
| Special tools and workshop equipment required |
| –
| Start engine and run until the radiator fan has switched
on once. |
| –
| Increase engine speed to about 2500 rpm for 2 minutes; perform
road test if necessary. |
Note | If the irregular valve noises stop but recur repeatedly during
short journeys, the oil filter bracket → Chapter with integrated oil retention valve must be renewed. |
| –
| If the hydraulic compensation elements are still noisy,
find out which is the defective compensation element as follows: |
| –
| Turn crankshaft by the bolt for the toothed belt wheel until
cam of supporting element to be tested is facing upwards. |
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