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EFFECTIVITY ALL CFM56-5B ENGINES FOR A319-A320-A321 CFMI PROPRIETARY INFORMATION
79-11-00 ENGINE SYSTEMS Page 3 Jan 03
CFM56-5B TRAINING MANUAL
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OIL TANK
The tank is vented through a duct connected to the transfer gearbox. During engine running operation, the oil is routed to the lubrication unit from an outlet port, located in the lower section of the tank to ensure constant oil availability.
A scavenge tube brings the air/oil mixture back to a cavity in the tank cover. Installed in the cavity, there is a tube with a swirler, which acts a static air/oil separator to centrifuge the oil for air extraction.
The other end of the tube has a deflector to prevent disturbances near the suction port. The tube length and the deflector prevent oil from going to the vent port, during excessive negative G flight conditions.
An electrical transmitter provides the aircraft indicating system with the oil level and a sight gauge, installed on the oil tank, can be used for visual level checks during ground maintenance tasks.
The transmitter is an electrical resistance sensor that uses a floating magnet and reed switches to indicate the oil quantity directly to the cockpit. An excitation signal is received from the aircraft and as the floating magnet moves up or down with the oil level, the reed switches open or close resistance circuits. The resistance value is proportional to the oil quantity.
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CTC-201-186-02
EFFECTIVITY
79-11-00 Page 5
ALL CFM56-5B ENGINES FOR A319-A320-A321
ENGINE SYSTEMS Jan 03
CFMI PROPRIETARY INFORMATION
CFM56-5B TRAINING MANUAL
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ANTI-SIPHON
EFFECTIVITY
79-20-00 Page 1
ALL CFM56-5B ENGINES FOR A319-A320-A321
ENGINE SYSTEMS Jan 03
CFMI PROPRIETARY INFORMATION
CFM56-5B TRAINING MANUAL
EFG
ANTI-SIPHON
The anti-siphon device prevents oil from the oil tank being siphoned into the accessory gearbox, during engine shutdown.
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