DOC AIRBUS | AMM A320FANGLE GEARBOX ASSEMBLY - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
A. Angle Gearbox (AGB)
(1) The AGB connects the Compressor Intermediate Case (CIC) to the Main Gearbox (MGB) through the layshaft of the AGB. The AGB housing is a support for the ball and roller bearings and gear shafts and contains a borescope opening and oil drain plugs.
(2) The AGB is connected to the CIC with four bolts to the CIC flange. During engine operation, the torque from the High Pressure Compressor (HPC) shaft is transmitted to the gearbox drive shaft and into the AGB. The AGB then transmits the torque with gear shafts through the layshaft to the MGB. Roller and ball bearings hold each gear shaft in the axial and radial positions. In the AGB, oil lubricates the ball and roller bearings and gear shafts. The oil is supplied from the external oil supply tubes. Scavenge oil that exits the AGB housing is sent to the oil tank.
Angle Gearbox (AGB) AssemblyA. The AGB is a 120-degree gear set that sends the HPC/HPT rotor torque from the CIC gearbox drive shaft to the MGB to which the oil, hydraulic, electrical and starter components are attached.
(1) The starter turns the HPC/HPT rotors through the AGB and the CIC gearbox drive shaft when necessary.