B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
R External Power 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-23-00-864-001 Depressurize the Green and Yellow Hydraulic Systems
after Operation of the PTU
71-13-00-010-040 Opening of the Fan Cowl Doors
29-11-51-991-901 Fig. 401
3. Job Set-up__________
Subtask 29-11-51-861-051
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
Subtask 29-11-51-860-054
B. Aircraft Maintenance Configuration
R R (1) Do a visual check of the element of the Green engine 1 pump case drain filter (1084GM), if you remove the pump: - because of operation without fluid (dry running) - or because of malfunction if you think that there is internal damage.
R R R R (2) Do also a visual check of the related Green HP filter element (1048GM): - if you find metal chips or decomposed hydraulic fluid (jelly) in the filter element - if you find contamination on the filters, flush the lines that connect the pump to the filters.
(3) Depressurize the Green hydraulic system (Ref. TASK 29-23-00-864-001).
(4) Depressurize the Green hydraulic reservoir (Ref. TASK 29-14-00-614-001).
(5) Put a warning notice(s) in position to tell persons not to pressurize the Green hydraulic system: - on the ground service panel 197CB.
(6) Put a warning notice(s) in position on the access door 195BB to tell persons not to pressurize the Green hydraulic reservoir.
Subtask 29-11-51-941-052
C. Safety Precautions
R (1) On the center pedestal, on the ENG panel 115VU: - put a warning notice(s) in position to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3)
Put a warning notice(s) in position to tell persons not to pressurize the Green hydraulic system:
-in the cockpit, on the HYD section of the panel 40VU.
(4)
On the maintenance panel 50VU:
-make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off
-put a warning notice(s) in position to tell persons not to energize the FADEC 1(2).
(5)
Put a container below the Green engine pump to collect the remaining fluid.
Subtask 29-11-51-865-056
D. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/G HYD/PUMP ENG1/CTL 1701GK R35 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34
Subtask 29-11-51-010-052
E. Get Access
(1) Open the left fan cowl door 437AL (Ref. TASK 71-13-00-010-040).
4. Procedure
_________ (Ref. Fig. 401/TASK 29-11-51-991-901) Subtask 29-11-51-020-052
A. Removal of the Green Engine Pump
(1)
Disconnect the electrical connector (1030GK-A) from the pump (35).
(2)
Disconnect the case drain hose (20) from the union/reducer (25) on the pump (35).
NOTE : Use a second wrench to hold the union/reducer (25) on the pump
____
(35) when you loosen the hose coupling nut.
1EFF : ALL 1 29-11-51Page 403 1 1 May 01/05R 1 1 1CES 1
R Green Engine Pump (Vickers) Figure 401/TASK 29-11-51-991-901
1EFF : 1 1 1CES ALL 1 111 29-11-51 Page 404 May 01/05
(3)
Remove the union/reducer (25) and the packing (30) from the case
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