T-45A UJPT, E2-C2, ADV, & IUT Eng-09
Hydraulic System
(c) Provides system pressure
Overlay 6
relief caused by system heat
Wheel Brake/Emergency Flap
Priority Valve
(3) Physical: multi-valve package
consisting of:
(a) Priority valve
(b) A pressure relief valve
(c) Two check valves
b.
Wheel brake/emergency flap valve
(1) Location: bottom, center fuselage
(between intakes)
(2) Description: with HYD 1 system
loss, priority valve disables emer-
gency flap operation from the
wheel brake/emergency flap accu-
mulator at 2,200 psi
(3) Physical: part of multi-valve
package consisting of a priority
valve, a thermal relief valve, and a
standby flap system emergency
valve
6.
Hand pump
Overlay 7
a.
Location: right intake, door labeled
HYD HAND PUMP/ GROUND LOCK
PINS
NOTE: The hand pump is not
accessible to the aircrew from
the cockpit.
HAND PUMP
b.
Description:
Sg 2, fr 3
Hand Pump Video
(1) Functional: hand pump supplies
up to 2,800 psi to recharge wheel
brake/emergency flap accumulator
(8-03) Original
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