ACCESSORY DRIVES - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
The accessory drives section consists of
** ON A/C NOT FOR ALL The accessory drives section consists of
- The Inlet Gearbox (IGB) Module and No. 3 bearing (Ref. AMM D/O 72-61-00-00),
- The Transfer Gearbox (TGB) Module (Ref. AMM D/O 72-62-00-00) and
- The Accessory Gearbox (AGB) Module (Ref. AMM D/O 72-63-00-00).
2. System Description
In running mode, the purpose of the accessory drives section is to provide engine and aircraft rotational accessories with rotational energy.
In starting mode, the purpose of the accessory drives section is to provide the engine core with rotational energy from the pneumatic air starter.
The TGB is located on the fan frame, at 8 o'clock position (ALF). The TGB redirects the rotational energy from the IGB to the AGB through its transfer shaft.
The AGB is located on the fan frame, at 8 o'clock position (ALF). The AGB assembly distributes mechanical power to driven accessories through a series of gears.
In running mode, the purpose of the accessory drives section is to provide engine and aircraft rotational accessories with rotational energy.
In starting mode, the purpose of the accessory drives section is to provide the engine core with rotational energy from the pneumatic air starter.
The TGB is located on the fan frame, at 8 o'clock position (ALF). The TGB redirects the rotational energy from the IGB to the AGB through its transfer shaft.
The AGB is located on the fan frame, at 8 o'clock position (ALF). The AGB assembly distributes mechanical power to driven accessories through a series of gears.
Accessory Drive System