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What may be the cause of the Main engine Tacho Alignment Error Alarm being triggers often?

29 Jan, 09:23

Jan. 29, 2020, 9:23 a.m.
KnowledgeBase's gravatar image



Answer:
  • Dirty Pick up Sensor. Cleaned both Tacho Pick up Sensor and detector metal plate at the Flywheel.
  • One or both Tachos may be misaligned.
  • Encoder drive slipping or encoder mount misaligned. After FWE, check The fixing screws of both Tacho A and Tacho B. Tighten if loose.
  • Check the support and Angle encoder. It may get damaged due to vibration. Replace and re-align if this is the case.
  • At the same time, check the run-out of the shaft. It should be within(+/- 0.2mm).
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29 Jan, 09:26

Jan. 29, 2020, 9:26 a.m.
cheng's gravatar image


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