DOC AIRBUS | AMM A320FRemoval of the Fuel Package Assembly [CFMB]
TASK 73-11-12-000-002-A
Removal of the Fuel Package Assembly
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 73-11-12-941-051-A ** ON A/C NOT FOR ALL
Subtask 73-11-12-020-051-A ** ON A/C NOT FOR ALL
(b) Remove the bolts (360), washers (365) and nuts (370) which attach the bracket (375) on the fan frame and remove it.
(c) Remove the bolts (390), washers (385) and nuts (380) which attach the bracket (395) on the fan frame and remove it.
(d) Remove the bolts (400), washers (405) and nuts (410) which attach the bracket (415) on the fan frame and remove it.
(2) Disconnect the electrical connector (75) from the fuel flow transmitter. If necessary, use PLIERS - NOSE, SOFT, LONG.
(3) Put CAP - BLANKING on the disconnected electrical connectors (75) and on the fuel flow transmitter.
(4) Remove the bolt (70) and nut (60) from the loop clamp (65) that attaches the electrical connector (75) to the support bracket (115). Remove the loop clamp (65).
(5) Disconnect the fuel pump HP tube (PSF) (40) from the union nut of the fuel-in tube (20).
(6) Remove the bolts (100) which attach the fuel supply tube from the discharge port of the Hydromechanical Unit (HMU).
(7) Remove and keep the gasket (110) from the discharge port of the HMU.
(8) Disconnect the fuel supply hose from the union (125) of the fuel injection supply tube.
(a) To do this step, you can disconnect the VSV head hose (225) and VSV rod hose (240) from the nipples of HMU.
(10) Remove the bolt (85) and washer (80) that attach the discharge bracket (120) to the HMU.
(11) Remove the assembled fuel flow transmitter, fuel injection supply tube, inlet bracket (105), discharge bracket (120) and fuel supply hose from HMU.
(12) Install PLUG - BLANKING on the open discharge port of the HMU and on the open ends of fuel supply tube.
(13) Install PLUG - BLANKING on the fuel supply hose and the union (125) of the fuel injection supply tube.
(14) Disconnect the electrical connectors, Channel A (130) and Channel B (235), from the HMU. If necessary, use PLIERS - NOSE, SOFT, LONG.
(15) Disconnect the electrical connector (150) from the latching solenoid. If necessary, use PLIERS - NOSE, SOFT, LONG.
(16) Put CAP - BLANKING on the disconnected electrical connectors (130), (150) and (235).
(17) Disconnect the oil-in tube (15) from the union nut of the oil tube (45).
(18) Remove the oil-out tube (15) from the servo fuel heater (50) as follows:
(a) Remove the bolts (25) from the servo fuel heater (50)
(b) Remove and keep the gasket (30) from the port of the servo fuel heater (50)
(19) Disconnect the flex-hoses from the HMU nipples that follow:
(b) VSV rod hose (240) from nipple (245).
(c) VBV closed hose (185) from nipple (180).
(d) VBV open hose (200) from nipple (195).
PRE CFMI SB 73-0114
(e) BSV hose (215) from nipple (210).
END OF PRE CFMI SB 73-0114
(f) PCR hose (230) from nipple (225).
(g) RACCS hose (135) from nipple (140).
(h) SOV hose (345) from nipple (350).
(i) HPTACC hose (285) from nipple (290).
(j) LPTACC hose (270) from nipple (275).
(k) OVBD drain tube (300) from nipple (305).
(20) Install PLUG - BLANKING on the disconnect flex-hose ends.
(21) Remove the IDG tube (330) from the IDG port on the HMU.
(a) Remove the bolts (335) from the HMU.
(b) Remove and keep the gasket (340) from the IDG port of the HMU.
(22) Install blanking cover on the open end of the IDG supply tube (330) and on the HMU port.
(23) Remove the return heater hose (315) from the HMU.
(a) Remove the bolts (320).
(b) Remove and keep the gasket (325).
(24) Install blanking cover on the open end of the return heater hose (315) and at the HMU port.
(25) Disconnect the aft sump oil supply tube (430) as follows:
(a) Remove the bolts (420) and the clamp (425) which attach the aft sump oil supply tube (430) to the fuel pump.
(b) Disconnect the connecting nut of the aft sump oil supply tube (430) from the nipples of the accessory gearbox (AGB).
(a) Remove the bolts (10) and disconnect the fuel supply tube (55) from the fuel supply tube (A/C).
(b) Remove and keep the gasket (5) from the junction port of the fuel supply tube (55).
PRE SB 72-0515 AND PRE SB 79-0022
(c) Remove the bolts (545) and washers (540) and disconnect the fuel-in tube (440) from the main/fuel heat exchanger. Remove the bracket (535) (for fan fire detection). Remove and keep the gasket (530).
POST SB 72-0515 AND POST SB 79-0022
(d) Remove the bolts (550) and disconnect the fuel-in tube (440) from the main/fuel heat exchanger. Remove the bracket (535) (for fan fire detection). Remove and keep the gasket (530).
1 Clamp (435) and plastic bushing to the lower side of bracket (520) on AGB which attach the fuel-in tube (440)
2 Clamp (525) and plastic bushing to the upper side of bracket (520) on AGB which attach the CLP fuel tube (450).
(f) Disconnect the CLP fuel tube (450) from the nipple (555) on the fuel pump.
(27) Install blanking cover on the open end of the fuel-in tube (440), on the CLP fuel tube (450) and on the main oil/fuel heat exchanger.
(28) Disconnect the fuel filter differential pressure tubes (Ref. AMM TASK 73-11-49-000-041).
(29) Remove the main oil/fuel heat exchanger tubes (Ref. AMM TASK 71-73-49-000-026) and the fuel pump pad drain tubes (Ref. AMM TASK 71-73-49-000-008).
(30) Drive hydraulic hoist platform under the fuel pump package.
(31) Lift hydraulic hoist platform until 856A2801 BASEPLATE-R I FUEL PUMP HMU PACKAGE is in contact with fuel package.
(32) Cut and remove safetywire and remove the Quick-Attach-Detach (QAD) bolt (560). Retain its retaining packing (565) and the ball-seat washer (575).
(33) Install the bolt (560) in reverse position.
Install 856A2801 BASEPLATE-R I FUEL PUMP HMU PACKAGE.
Install 856A2609 BLOCK,JACKING-FUEL PUMP.
(34) Torque the QAD bolt (560):
and hit the QAD ring (570) until it moves sufficiently to disengage the fuel pump.
(35) Carefully pull the fuel package rearward to disengage the pump drive shaft from the AGB drive pad.
(36) Remove the 856A2609 BLOCK,JACKING-FUEL PUMP.
PRE SB 72-0094
(37) Disengage the seal ring assembly (465) from the QAD ring (570) and keep it if not damaged.
POST SB 72-0094
(38) Disengage the seal ring assembly (470) from the QAD ring (570).
(a) Remove the performed packing (475) from the support (480).
(b) Discard the performed packing (475).
END OF SB 72-0094
(40) Remove and discard the O'ring (485) from the fuel pump drive shaft.
(41) Remove the seal ring assembly (465) or (470) from the AGB housing.
(42) If one or many nipples from HMU for fuel pump are unscrewed, remove this or these nipples and discard the O'ring.
(43) Install the blanking plugs, caps and COVER - BLANKING on all open parts of the HMU, the servo fuel heater and the fuel tube attach on the fuel pump to prevent contamination.
(44) Preserve HMU (Ref. AMM TASK 73-21-10-600-002).
(45) Preserve fuel pump (Ref. AMM TASK 73-11-10-620-002).
[Rev.10 from 2021]
2026.04.01 02:57:40 UTC
Removal of the Fuel Package Assembly
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | CAP - BLANKING |
| No specific | AR | CONTAINER 5 L (1.32 USGAL) |
| No specific | AR | COVER - BLANKING |
| No specific | AR | PLIERS - NOSE, SOFT, LONG |
| No specific | AR | PLUG - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 315 and 285 lbf.in (3.56 and 3.22 m.daN ) | |
| 856A2609 | 1 | BLOCK,JACKING-FUEL PUMP |
| 856A2801 | 1 | BASEPLATE-R I FUEL PUMP HMU PACKAGE |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| TASK 24-41-00-861-002-A-01 | Energize the Aircraft Electrical Circuits from the APU |
| TASK 24-41-00-861-002-A-02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
| TASK 71-73-49-000-008-A | Removal of the Fuel Pump Drain Tubes |
| TASK 71-73-49-000-026-A | Removal of the Heat Exchanger Drain Tube |
| TASK 73-11-10-620-002-A | Preservation of the Fuel Pump and Filter Assembly |
| TASK 73-11-45-000-001-A | Removal of the Fuel Nozzle Filter (Downstream Fuel Filter) |
| TASK 73-11-49-000-041-A | Removal of the Fuel Tubes |
| TASK 73-21-10-600-002-A | Preservation of the Hydromechanical Unit (HMU) |
| TASK 78-30-00-481-041-B | Make the Thrust Reverser Unserviceable for Maintenance |
| TASK 78-36-00-010-040-B | Opening of the Thrust Reverser Doors |
Illustration of Fuel Package Removal - HMU SideSubtask 73-11-12-941-051-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) 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) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 73-11-12-861-053-A ** ON A/C NOT FOR ALL Subtask 73-11-12-865-053-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) 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) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
C. Open, safety and tag this(these) circuit breaker(s):
Subtask 73-11-12-010-053-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 1000EM1 (ENGINE1) | |||
| 49VU | FUEL/LP VALVE/MOT1/ENG1 | 1QG | A08 |
| 121VU | FUEL/LP VALVE/MOT2/ENG1 | 3QG | M25 |
| FOR FIN: 1000EM2 (ENGINE2) | |||
| 49VU | FUEL/LP VALVE/MOT1/ENG2 | 2QG | A09 |
| 121VU | FUEL/LP VALVE/MOT2/ENG2 | 4QG | M26 |
D. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.
Subtask 73-11-12-040-052-A ** ON A/C NOT FOR ALL Subtask 73-11-12-010-054-A ** ON A/C NOT FOR ALL (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.
F. Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR
4. Procedure(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 73-11-12-020-051-A ** ON A/C NOT FOR ALL
WARNING:
BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES.
IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER.
IF NECESSARY, GET MEDICAL HELP.
AIRCRAFT FUEL IS POISONOUS.
CAUTION:
USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:
A. Removal of the Fuel Package Assembly - ONE WRENCH TO HOLD THE UNION, AND
- ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.
NOTE: Put a CONTAINER 5 L (1.32 USGAL) under the HMU and fuel pump to catch fuel released when you disconnect fuel lines.
(1) Remove the fuel nozzle filter and its brackets as follows: NOTE: These steps are for engine with SB 73-0071 applied.
(a) Remove the fuel nozzle filter (Ref. AMM TASK 73-11-45-000-001). (b) Remove the bolts (360), washers (365) and nuts (370) which attach the bracket (375) on the fan frame and remove it.
(c) Remove the bolts (390), washers (385) and nuts (380) which attach the bracket (395) on the fan frame and remove it.
(d) Remove the bolts (400), washers (405) and nuts (410) which attach the bracket (415) on the fan frame and remove it.
(2) Disconnect the electrical connector (75) from the fuel flow transmitter. If necessary, use PLIERS - NOSE, SOFT, LONG.
(3) Put CAP - BLANKING on the disconnected electrical connectors (75) and on the fuel flow transmitter.
(4) Remove the bolt (70) and nut (60) from the loop clamp (65) that attaches the electrical connector (75) to the support bracket (115). Remove the loop clamp (65).
(5) Disconnect the fuel pump HP tube (PSF) (40) from the union nut of the fuel-in tube (20).
(6) Remove the bolts (100) which attach the fuel supply tube from the discharge port of the Hydromechanical Unit (HMU).
(7) Remove and keep the gasket (110) from the discharge port of the HMU.
(8) Disconnect the fuel supply hose from the union (125) of the fuel injection supply tube.
NOTE: For engine with SB 73-0071 applied, do not do the step above.
(9) Remove the bolt (95) and washer (90) that attach the inlet bracket (105) to the HMU. (a) To do this step, you can disconnect the VSV head hose (225) and VSV rod hose (240) from the nipples of HMU.
(10) Remove the bolt (85) and washer (80) that attach the discharge bracket (120) to the HMU.
(11) Remove the assembled fuel flow transmitter, fuel injection supply tube, inlet bracket (105), discharge bracket (120) and fuel supply hose from HMU.
(12) Install PLUG - BLANKING on the open discharge port of the HMU and on the open ends of fuel supply tube.
(13) Install PLUG - BLANKING on the fuel supply hose and the union (125) of the fuel injection supply tube.
(14) Disconnect the electrical connectors, Channel A (130) and Channel B (235), from the HMU. If necessary, use PLIERS - NOSE, SOFT, LONG.
(15) Disconnect the electrical connector (150) from the latching solenoid. If necessary, use PLIERS - NOSE, SOFT, LONG.
(16) Put CAP - BLANKING on the disconnected electrical connectors (130), (150) and (235).
(17) Disconnect the oil-in tube (15) from the union nut of the oil tube (45).
(18) Remove the oil-out tube (15) from the servo fuel heater (50) as follows:
(a) Remove the bolts (25) from the servo fuel heater (50)
(b) Remove and keep the gasket (30) from the port of the servo fuel heater (50)
(19) Disconnect the flex-hoses from the HMU nipples that follow:
CAUTION:
USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:
(a) VSV head hose (255) from nipple (260). - ONE WRENCH TO HOLD THE UNION, AND
- ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.
(b) VSV rod hose (240) from nipple (245).
(c) VBV closed hose (185) from nipple (180).
(d) VBV open hose (200) from nipple (195).
PRE CFMI SB 73-0114
(e) BSV hose (215) from nipple (210).
END OF PRE CFMI SB 73-0114
(f) PCR hose (230) from nipple (225).
(g) RACCS hose (135) from nipple (140).
(h) SOV hose (345) from nipple (350).
(i) HPTACC hose (285) from nipple (290).
(j) LPTACC hose (270) from nipple (275).
(k) OVBD drain tube (300) from nipple (305).
(20) Install PLUG - BLANKING on the disconnect flex-hose ends.
(21) Remove the IDG tube (330) from the IDG port on the HMU.
(a) Remove the bolts (335) from the HMU.
(b) Remove and keep the gasket (340) from the IDG port of the HMU.
(22) Install blanking cover on the open end of the IDG supply tube (330) and on the HMU port.
(23) Remove the return heater hose (315) from the HMU.
(a) Remove the bolts (320).
(b) Remove and keep the gasket (325).
(24) Install blanking cover on the open end of the return heater hose (315) and at the HMU port.
(25) Disconnect the aft sump oil supply tube (430) as follows:
(a) Remove the bolts (420) and the clamp (425) which attach the aft sump oil supply tube (430) to the fuel pump.
(b) Disconnect the connecting nut of the aft sump oil supply tube (430) from the nipples of the accessory gearbox (AGB).
NOTE: If the routing of the aft sump oil supply tube (430) does not get the fuel pump package removal, do not do this step.
(26) Disconnect the fuel tubes as follows: (a) Remove the bolts (10) and disconnect the fuel supply tube (55) from the fuel supply tube (A/C).
(b) Remove and keep the gasket (5) from the junction port of the fuel supply tube (55).
PRE SB 72-0515 AND PRE SB 79-0022
(c) Remove the bolts (545) and washers (540) and disconnect the fuel-in tube (440) from the main/fuel heat exchanger. Remove the bracket (535) (for fan fire detection). Remove and keep the gasket (530).
POST SB 72-0515 AND POST SB 79-0022
(d) Remove the bolts (550) and disconnect the fuel-in tube (440) from the main/fuel heat exchanger. Remove the bracket (535) (for fan fire detection). Remove and keep the gasket (530).
NOTE: Make sure that bolts (550) removed from the main/fuel heat exchanger port have a correct length to attach correctly the fuel-in tube (440) on the port. If not, discard these bolts.
END OF SB 72-0515 AND END OF SB 79-0022
(e) Remove the bolt (510) and the nut (515) which attach the items which follow: END OF SB 72-0515 AND END OF SB 79-0022
1 Clamp (435) and plastic bushing to the lower side of bracket (520) on AGB which attach the fuel-in tube (440)
2 Clamp (525) and plastic bushing to the upper side of bracket (520) on AGB which attach the CLP fuel tube (450).
(f) Disconnect the CLP fuel tube (450) from the nipple (555) on the fuel pump.
(27) Install blanking cover on the open end of the fuel-in tube (440), on the CLP fuel tube (450) and on the main oil/fuel heat exchanger.
(28) Disconnect the fuel filter differential pressure tubes (Ref. AMM TASK 73-11-49-000-041).
(29) Remove the main oil/fuel heat exchanger tubes (Ref. AMM TASK 71-73-49-000-026) and the fuel pump pad drain tubes (Ref. AMM TASK 71-73-49-000-008).
(30) Drive hydraulic hoist platform under the fuel pump package.
(31) Lift hydraulic hoist platform until 856A2801 BASEPLATE-R I FUEL PUMP HMU PACKAGE is in contact with fuel package.
(32) Cut and remove safetywire and remove the Quick-Attach-Detach (QAD) bolt (560). Retain its retaining packing (565) and the ball-seat washer (575).
(33) Install the bolt (560) in reverse position.
Install 856A2801 BASEPLATE-R I FUEL PUMP HMU PACKAGE.
Install 856A2609 BLOCK,JACKING-FUEL PUMP.
(34) Torque the QAD bolt (560):
CAUTION:
OBEY THE TORQUE VALUES SPECIFIED BELOW.
CAUTION:
DURING REMOVAL, KEEP THE DRIVE SHAFT PERPENDICULAR TO THE AGB MOUNTING FLANGE, MAKE SURE THAT THERE IS NO LOAD ON THE DRIVE SHAFT.
(a) TORQUE the bolt to between 315 and 285 lbf.in (3.56 and 3.22 m.daN ) and hit the QAD ring (570) until it moves sufficiently to disengage the fuel pump. (35) Carefully pull the fuel package rearward to disengage the pump drive shaft from the AGB drive pad.
(36) Remove the 856A2609 BLOCK,JACKING-FUEL PUMP.
PRE SB 72-0094
(37) Disengage the seal ring assembly (465) from the QAD ring (570) and keep it if not damaged.
POST SB 72-0094
(38) Disengage the seal ring assembly (470) from the QAD ring (570).
NOTE: The seal ring assembly is made of a support (metal ring) (480) and a preformed packing (475).
(39) If the performed packing (475) is damaged, do as follows: (a) Remove the performed packing (475) from the support (480).
(b) Discard the performed packing (475).
END OF SB 72-0094
(40) Remove and discard the O'ring (485) from the fuel pump drive shaft.
(41) Remove the seal ring assembly (465) or (470) from the AGB housing.
(42) If one or many nipples from HMU for fuel pump are unscrewed, remove this or these nipples and discard the O'ring.
(43) Install the blanking plugs, caps and COVER - BLANKING on all open parts of the HMU, the servo fuel heater and the fuel tube attach on the fuel pump to prevent contamination.
(44) Preserve HMU (Ref. AMM TASK 73-21-10-600-002).
(45) Preserve fuel pump (Ref. AMM TASK 73-11-10-620-002).