WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION
_______
BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS ARE
_______ CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE.
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Pressurize the Blue hydraulic system with the electric pump (Ref. AMM TASK 29-10-00-863-003).
(3) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
(4) Operate the sidestick for ailerons, spoilers and elevators at full travel for 5 min.
(5) Operate the rudder pedals at full travel for 5 min.
(6) Operate the flap and slat control lever at full travel for 5 min.
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4. Fault Isolation
_______________
A. If the test gives:
- the message HYD B RSVR OVHT on the upper ECAM DU,
- the BLUE ELEC PUMP P/BSW FAULT light on panel 40VU,
- the OVHT flag on the HYD page of the lower ECAM DU:
(1) You must measure the temperature with a temperature sensor adjacent to the XMTR-TEMP, B RSVR (2381GR).
(2) If the temperature is more than 95 +2.2 -2.2 deg.C (203.00 +3.96 -
3.96 deg.F):
- do a check of the internal leakage of the Blue hydraulic system (Ref. AMM TASK 29-00-00-280-002).
(a) If the internal leakage is more than permitted:
1 examine the system to find the defective component.
_
2 replace or repair the defective component.
_
(b) If the internal leakage is not more than permitted:
- do a check of the filter elements of the FILTER-ELEC PUMP CASE DRAIN, B (2084GM), FILTER-HP, B (2048GM) and FILTER-RSVR RETURN, B (2002GM) for contamination and/or parts of a defective check valve
1 If the filter elements are dirty, or you find parts of a
_ defective check valve (spring and/or ball):
a Replace the filter element (Ref. AMM TASK 29-12-43-610-001)
_ or (Ref. AMM TASK 29-12-44-610-001) or (Ref. AMM TASK 29-12-45-610-001).
2 Remove the check valve CHECK VALVE B (2050GM) (Ref. AMM TASK
_
29-12-36-000-001)
a Do a check of the check valve 2050GM for the correct
_
condition.
b If necessary install a new check valve 2050GM (Ref. AMM
_ TASK 29-12-36-400-001).
3 Flush the blue hydraulic system (Ref. AMM TASK 12-36-29-170-
_
003).
(3) If the temperature is less than 95 +2.2 -2.2 deg.C (203.00 +3.96 -
3.96 deg.F):
- do a check for continuity between: XMTR-TEMP, B RSVR (2381GR) connector A/A and connector A/B (Ref. ASM 29-33/01).
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(a) If there is continuity:
- replace the XMTR-TEMP, B RSVR (2381GR) (Ref. AMM TASK 29-33-11-000-002) (Ref. AMM TASK 29-33-11-400-002).
(b) If there is no continuity:
- make sure that the wiring is not connected to GND between: XMTR-TEMP, B RSVR (2381GR) connector A/B and DIODE ((1156VD) connector 31 (Ref. ASM 29-12/01).
1 If the wiring is connected to GND:
_ - repair the wiring as necessary.
(c) If the fault continues:
- do the operational test of the central warning system (Ref. AMM TASK 31-50-00-710-001).
1 If the test gives the maintenance message SDAC1 : B HYD TEMP
_
XMTR 2381GR:
- replace the SDAC-1 (1WV1), (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
2 If the test gives the maintenance message SDAC2 : B HYD TEMP
_
XMTR 2381GR:
- replace the SDAC-2 (1WV2), (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
B. Do the test as given in Para. 3. B. to make sure that operation is
correct (no maintenance message shown).
5. Close-up
________
A. Aircraft Maintenance Configuration
(1) Make sure the Blue hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-003).
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