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MASTER CHIP DETECTOR
CTC-201-195-01
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ENGINE SYSTEMS Jan 03
CFMI PROPRIETARY INFORMATION
CFM56-5B TRAINING MANUAL
EFG
MASTER CHIP DETECTOR
The MCD collects magnetic particles in the oil circuit by means of two magnets on a probe immersed in the oil flow.
The probe is locked in position through a bayonet system.
When a sufficient amount of particles are caught, the gap between the 2 magnets is bridged and the resistance between them drops. this electrical signal is then sent to the contamination pop-out indicator.
The MCD assembly consists of:
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A housing which has two flanges for attachment.
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A check valve, built in the housing, that prevents
oil spillage when the probe is removed and also
provides a passage for the oil flow, in case of chip
detector disengagement.
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A hand removable probe, which has a back-up seal,
an O-ring seal, and two magnets.
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A two-wire, shielded electrical cable and an interface
connector.
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CTC-201-196-01
EFFECTIVITY
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ENGINE SYSTEMS Jan 03
CFMI PROPRIETARY INFORMATION
CFM56-5B TRAINING MANUAL
EFG
THIS PAGE INTENTIONALLY LEFT BLANK
EFG
MAGNETIC CONTAMINATION INDICATOR
EFFECTIVITY
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ENGINE SYSTEMS Jan 03
CFMI PROPRIETARY INFORMATION
CFM56-5B TRAINING MANUAL
EFG
MAGNETIC CONTAMINATION INDICATOR
The indicator works in conjunction with the MCD and its purpose is to provide maintenance personnel with a visual indication of magnetic chip contamination in the oil circuit.
The indicator is a pop-out device, located on the left hand side (ALF) of the downstream fan case, just above the oil tank.
It has 2 electrical connectors:
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One for the wiring harness connected to the MCD.
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One for the harness connecting the indicator to the
EIU.
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CTC-201-198-02
EFFECTIVITY
79-21-60 Page 3
ALL CFM56-5B ENGINES FOR A319-A320-A321
ENGINE SYSTEMS Jan 03
CFMI PROPRIETARY INFORMATION
CFM56-5B TRAINING MANUAL
EFG
MAGNETIC CONTAMINATION INDICATOR
The magnetic particles contamination indicator consists of:
- A mechanical pop-out button indicator.
-A solenoid.
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