T-45C TS, ADV & IUT ENG-09
Hydraulic System
D.
HYD 2 controls, switches, and indicators 1.4.8.5
Sg 3, fr 7, p 1
Hydraulic System
Pressure Gauges/
1.
Left console, both cockpits
Reset Button
(1 Overlays)
a.
HYD 2 pressure gauge
(1) Indicates HYD 2 system or Emergency
Hydraulic System pressure
(2) Calibrated from 0 to 4000 psi in 200 psi
increments and labeled every 1000 psi
b.
HYD 2 RESET button
Overlay 1
HYD 2 RESET Button
(1) Resets and stows RAT if HYD 2 EDP
pressure above 1800 psi
(2) Resets HYD 2 EDP bypass valve when
engine rpm above 45%
NOTE: Electrical power is supplied by the
Sg 3, fr 8
28 VDC essential services bus.
Warning and Caution
Advisory Light Panels
2.
Warning and caution advisory light panels, both
(2 Overlays)
cockpits
a.
HYD 2 caution light alerts aircrew to possible
HYD 2 EDP failure: illuminates when HYD 2
EDP pressure drops below 1660 + 110 psi. It
will also illuminate with functional HYD 2 EDP in
cases where excessive demand drops HYD 2
pressure below 1660 psi. It extinguishes when
HYD 2 EDP pressure is above 2000 psi
Overlay 1
HYD 2
Caution Light
NOTE: As long as the HYD 2 pressure gauge
is cycling between 2500 and 3000 psi, the RAT
is functioning and is producing sufficient
hydraulic pressure to power the flight controls.
Overlay 2
b.
RAT caution light indicates that the RAT is
RAT
extended
Caution Light
(9-98) Original
Page 9-23
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