85 – System Description
Cooling Circuit with optional Gearbox Oil Cooler:
A Gearbox Oil-Water Heat Exchanger (HEX), installed directly at the rear side of the gearbox, is
integrated in the coolant circuit, in addition to the standard cooling circuit (refer to
Fig. 85 - 4).
The example for a permitted standard cooling circuit (refer to Fig. 85 - 3) is only extended by the
gearbox HEX.
For detailed description refer to the Operation Manual E4.01.01 for model E4, E4.01.02 for model E4P,
and Installation Manual E4.02.01.
(For the related installation refer to the applicable Aircraft Maintenance Manual)
Fig. 85 - 4 Cooling Circuit with optional Gearbox Oil Cooler