TCH.1C-27J-2-27JG
PROCEDURE:
2-53.1 HYDRAULIC ACCUMULATORS SHUT-OFF
VALVE CHECK (refer to figure
(refer to figure
) , (refer to figure
) and (refer to figure
)
1.Simulate the hydraulic system HP condition as
follows:
A.disconnect the aircraft connector (2) from the LOW
PRESSURE ACMP 2 switch (28 DE) (1) and fit a
short between the pins B and C;
B.disconnect the aircraft connector (3) from the LOW
PRESSURE ACMP 1 switch (29 DE) (4) and fit a
short between the pins B and C.
2.Close the circuit breakers located on Overhead Circuit
Breakers Panel (271VE) (5):
A.HYDRAULICS CNTR ACMP 1 (4DE) (6) in position
B 7.
B.HYDRAULICS CNTR ACMP 2 (3DE) (7) in position
B 8;
C.HYDRAULICS LOW PRESS CHNL 1 (18DE) (8) in
position B 9;
3.Ensure that the pushbutton ACCUMULATOR (10), on
FCS 2 Control Panel (104VE) (9), is de-selected
(lamp ON extinguished).
4.Supply the hydraulic systems No. 1 and No. 2 at 3000
psi (210 Kg/cm²) for a few minutes.
5.Remove the short from the connector (28 DEA) (2) (to
simulate the system 2 LP condition), then annul the
hydraulic pressure in the system No. 2.
6.Remove the short from the connector (29 DEA) (3) (to
simulate the system 1 LP condition), then annul the
hydraulic pressure in the system No. 1.
(Cont'd)
27-30-20
2-419