GE-CF6-80E1-42

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PAD NO. 6
STARTER
IDLER
IDG
PAD NO. 2
PAD NO. 4
OIL TUBE
BRACKET
FUEL PUMP
PAD NO. 8
DRAIN TUBE
BRACKETNOTE: ACCESSORIES OMITTED
ACCESSORY GEARBOX AFT SIDE
 FOR CLARITY.
BRACKET
OIL TUBE
____
PAD NO. 9
ALTERNATOR
CONTROL
EDP
HMU
PUMP
LUBE/SCAVENGE
PAD NO. 1
PAD NO. 5
PAD NO. 3
PAD NO. 7
BRACKET
OIL TUBE
BRACKET
OIL TUBE
DRIVE SHAFT
FWD GEARBOX
ACCESSORY
HORIZONTAL
HOUSING
SHAFT
GEARBOX
TRANSFER
PACKING
PREFORMED
HORIZONTAL DRIVE SHAFT
ACCESSORY GEARBOX FORWARD SIDE
EDP
5
A330 - ENGINE ATA 71 up 80
GE CF6-80E1 83 of 394
 
 
 
 
 
 
 
 
 
 
 
ACCESSORY DRIVES
The accessory gearbox assembly consists of a one piece, cast aluminum,
casing, aluminum adapters, spur gears and associated bearings, seals and oil
jets.
The gearbox design features a ”plug in” gear concept on all accessory pads
and idler gears. With this concept, an entire gear, seal and pad assembly may
be removed and replaced without otherwise disassembling the gearbox. The
accessory pads incorporate female splines to accept accessory quill shafts and
QAD (quick attach/detach) connections to facilitate accessory
removal/installation. Internal oil jets provide lubrication of the gears and
bearings. All gearbox seals, which are carbon face seals, are retained from the
outside of the gearbox and can be replaced without teardown of the gearbox. 
The accessory drives are mounted on the accessory pads. To facilitate
borescope inspection of the core rotor, rotation can be accomplished manually
or by a drive motor via the accessory gearbox. The drive adapter is accessed
by removing a cover plate on the accessory gearbox.
The gear wheels, necessary to drive the accessories are situated in adapters
(pads). The pads are also used as attachment flanges for the accessories.
Sealing for the drive shafts is provided by ”MAGNETIC FACE TYPE” Carbon
Seals.
The splines of the drive shafts become lubricated from the engine oil system
via calibrated bore holes. Therefore all drive shafts are sealed with an O Ring.
Reasons for leakage of the accessory drives may be :
� the magnetic Carbon Seal
� the O Ring of the drive shaft
� the different accessories seals.
A330 - ENGINE ATA 71 up 80
GE CF6-80E1 84 of 394