Chapter 1
Turbine Package System Overview
1-24
Hydraulic Pump Boost Flow Oil Filter
A high-pressure filter (XF14) and bypass valve assembly (XV185) filters the oil to the hydraulic
pump. The filter housing is fitted with a pop up indicator button to provide a visual indication of
filter blockage.
Starter Clutch
The hydraulic motor is mounted to the auxiliary gearbox through a high-speed overrunning
clutch. During start up, the motor/clutch has a positively engaged connection to the auxiliary
gearbox. The hydraulic motor runs the turbine up to its ignition speed. Upon ignition, the turbine
speed increases further which causes the clutch to disengage. The design of the starter clutch
enables re-engagement on run down, without having to fully stop the turbine before attempting
a restart.
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