PRE SB CFM 73-0096
(2) Disconnect the fuel tubes which follow:
(a) Fuel return tube (10).
(b) Shutoff signal (PB/PSF) fuel tube (30).
(c) Fuel pump HP tube (40).
(d) IDG cooler tube (50).
(e) Fuel pump LP tube (60).
(f) Drain tube (90)
END OF PRE SB CFM 73-0096
POST SB CFM 73-0096
(3) Disconnect the fuel tubes which follow:
(a) Fuel return tube (10).
(b) Bypass (PB/PSF) fuel tube (30).
(c) Fuel pump HP tube (40).
(d) IDG cooler tube (50).
(e) Fuel pump LP tube (60).
(f) Drain tube (90)
END OF SB CFM 73-0096
(4) Disconnect the HJ7 harness connector (80) and the HJ8 harness connector (70). Use soft-nose connector pliers only if necessary.
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R Fuel Return Valve PRE SB CFM 80-0096 Figure 401/TASK 73-11-50-991-304- 12 (SHEET 1)
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R Fuel Return Valve PRE SB CFM 80-0096 Figure 401/TASK 73-11-50-991-304- 22 (SHEET 2)
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R Fuel Return Valve POST SB CFM 80-0096 Figure 402/TASK 73-11-50-991-308- 12 (SHEET 1)
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R Fuel Return Valve POST SB CFM 80-0096 Figure 402/TASK 73-11-50-991-308- 22 (SHEET 2)
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(5) Remove the FRV CAUTION : TAKE CARE DURING REMOVAL OF THE FUEL RETURN VALVE NOT TO
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DAMAGE THE NIPPLES.
(a) Remove the 4 bolts (100) and washers (110) which attach the FRV on bracket (20), between flanges E and F at the 10 o'clock position.
(b) Remove the FRV from the engine.
(c) Install blanking caps on the disconnected parts and orifices.
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TASK 73-11-50-400-002
Installation of the Fuel Return Valve
1. Reason for the Job
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Self Explanatory
2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific soft-nose connector pliers
No specific warning notice
No specific Torque Wrench : range 36.00 to 220.00 lbf.in
(0.40 to 2.60 m.daN)
No specific Torque Wrench : range 96.00 to 900.00 lbf.in
(1.00 to 10.00 m.daN)
No specific Torque Wrench : range 180.00 to 1800.00 lbf.in
(2.00 to 20.00 m.daN)
B. Consumable Materials
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REFERENCE DESIGNATION
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Material No. CP2101 USA MIL-T-5544
graphite grease (Ref. 70-30-00)
C. Referenced Information
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REFERENCE DESIGNATION
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R 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
R from the External Power 71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors 73-11-50-360-002 Leak Check of the Fuel Return Valve 73-11-50-991-304 Fig. 401 73-11-50-991-308 Fig. 402
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3. Job Set-up
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Subtask 73-11-50-860-051
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a warning notice is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a warning notice is in position to tell persons not to energize the FADEC 1(2). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM 发动机燃油和控制 ENGINE FUEL AND CONTRO(74)
