Located at the rear of the engine is the accessory gearbox. It consists of two magnesium
alloy castings attached to the rear flange of the compressor inlet case by 16 studs. The front casting,
provided with front and rear O-rings, forms an oil-tight diaphragm between the oil tank compartment of
the inlet case and the accessory drives. The accessory drive gearbox is illustrated in figure 9.10.
Figure 9.10. Accessory Gearbox Cross Section, -702.