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  1. alanmort

    Power loss on MAN 6L40/45

    Have, sometimes, got no improvement when overhauling T/C. Rotors cleaned and re-balanced by shore company. Not seen to be very dirty when dismantled. Have tried 3 different types of nozzle ring.
  2. alanmort

    Power loss on MAN 6L40/45

    Further to washing, what exhaust inlet temp to turbochargers?
  3. alanmort

    Power loss on MAN 6L40/45

    Many thanks for help so far, will try and find a user group. The temp rises are common to all cylinders, not just one and sensors are checked regularly as errors normally show up as extreme, and impossible, fluctuations. The air supply is very possible. The T/C's are washed every 6 days with an...
  4. alanmort

    Power loss on MAN 6L40/45

    Correction, interval should read 2000 hr
  5. alanmort

    Power loss on MAN 6L40/45

    The power loss is even on all cylinders. It is a vicious circle type of thing, T/C rpm drops which gives less scavenge air pressure which, in turn, gives higher exhaust temps. This normally corrected by T/C overhaul but the improvement is relatively short lived. We now overhaul T/C at 200 hr...
  6. alanmort

    Power loss on MAN 6L40/45

    Exhaust temps are individual units plus inlet to T/C. Sensors are checked against calibration unit periodically but are not changed at unit overhaul
  7. alanmort

    Power loss on MAN 6L40/45

    I lose power/performance from a 6L 40/45 600rpm MAN engine. After T/C overhaul the engine runs at full performance for about 1500 - 2000 hrs and then drops off so the CPP pitch limit drops from 16.5 to 11-12 by about 4000 hrs. The limit is caused by exhaust temp limits of 480 deg C. The T/C is...

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