T-45C TS, ADV & IUT ENG-09
Hydraulic System
3.
Leak in HYD 1
a.
Check valves limit loss of fluid if leak is confined
Overlay 3
to an individual component (e.g., leaking launch
Check Valves
bar actuator)
b.
Indications
(1) Visual confirmation
(2) When pressure drops below 1500 psi,
general services isolated from system
(3) When pressure drops below 1660 + 110 psi
or 600 + 50 psi, HYD 1 caution light
illuminates
F.
HYD 1 operational characteristics summary:
Sg 3, fr 2
HYD 1 is an independent hydraulic system used to power
Lesson Organization
the flight controls and general services. If HYD 1 fails,
HYDRAULIC SYSTEM
some general services will be lost while others will
* T-45C hydraulic system overview
operate on emergency backup systems only.
* Hydraulic system no. 1 (HYD 1)
* Hydraulic system
III. Hydraulic system no. 2 (HYD 2) 1.4.8.3.2
no. 2 (HYD 2)
* Emergency hydraulic system
A.
Description
* Aircraft interfaces
The HYD 2 reservoir supplies fluid to the HYD 2 engine-
Sg 3, fr 3, p 1
driven pump (EDP) that, in turn, produces hydraulic
Hydraulic System Block
pressure to power the flight controls.
Diagram (5 Overlays)
B.
HYD 2 components
1.
Reservoir
a.
Location: RAT bay, topside of aircraft, forward
of the tail section
(1) Stores hydraulic fluid for HYD 2 operation
Overlay 1
HYD 2 Reservoir
(2) Provides fluid under nitrogen preload
pressure to HYD 2 to prevent EDP
(9-98) Change 4
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