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It may be purely for the initial calibration procedures only, to minimise friction as the end stop learning procedure is done with the engine off so no oil would be sprayed there.
Just some feedback after completing the repair on an S55 today.
- The fault codes suggest an implausible signal from the hall position sensors. This could mean one of the two sensors was faulty or both were faulty, causing the motor to drive the eccentric shaft against the end stops. We didn't have time to scope the signals to show you guys, sorry.
- When the engine is switched off, the eccentric shaft is in the maximum lift position so it will be under almost max spring tension. Be careful and hold the shaft using a 13mm spanner and make sure it doesn't slip off, whilst slowly winding the motor using a long 4mm Allen key
- The motor does have a notchy feel to it. As long as it isn't stiff to turn using an allen key, it should be ok. It does not feel smooth to turn like an N52 servomotor.
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