Removal of the Low Pressure (LP)/High Pressure (HP) Fuel Pump [IAE]

TASK 73-12-41-000-010-B
Removal of the Low Pressure (LP)/High Pressure (HP) Fuel Pump

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.

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

WARNING: BE CAREFUL DURING THE REMOVAL/INSTALLATION OF THE LP/HP FUEL PUMP BECAUSE IT WEIGHS 30.5lb (13.8kg).

CAUTION: DO NOT LET ENGINE FUEL OR OIL FALL ON THE ENGINE. UNWANTED FUEL OR OIL MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FUEL OR OIL CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.

CAUTION: DO NOT PUT FUEL THAT HAS BEEN DRAINED FROM THE ENGINE BACK IN TO THE FUEL SYSTEM.

ZONE: 210
ZONE: 400
FIN: 2001EM ** ON A/C NOT FOR ALL

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	COVER - PROTECTION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
IAE1R18003	1	WRENCH

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 73-11-47-000-010-A	Removal of the Rigid Fuel Tube, Aircraft to the LP Pump
TASK 73-11-47-000-011-A	Removal of the Rigid Fuel Tube, Fuel Diverter and Return Valve (FDRV)
TASK 73-22-52-000-010-B	Removal of the Fuel Metering Unit (FMU)
TASK 73-31-17-000-010-B	Removal of the Fuel Flow Transmitter
LP/HP Fuel Pump
Electrical Connectors and Fuel Tubes
Rigid Fuel Tubes and Fuel Flow Transmitter
LP/HP Fuel Pump

3. Job Set-up
Subtask 73-12-41-941-052-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the "ENG/MASTER 1(2)" control switch is set to the "OFF" position.
(b) Put the WARNING NOTICE(S) to tell persons not to start the engine.
(2) Do the Electronic Instrument System (EIS) start procedure (upper ECAM DU (Display Unit) and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
(3) Make sure that, on the ENG fuel page, the LP valve is shown closed.
(4) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(5) On 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 the WARNING NOTICE(S) to tell persons not to energize the Full Authority Digital Engine Control (FADEC) 1(2).

Subtask 73-12-41-865-050-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

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

Subtask 73-12-41-010-057-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 73-12-41-010-058-A ** ON A/C NOT FOR ALL

A. Removal of the Fuel Metering Unit (FMU)
(1) Remove the FMU (1) (Ref. AMM TASK 73-22-52-000-010)

LP/HP Fuel Pump ** ON A/C NOT FOR ALL

(a) Remove the electrical connectors and the tubes from the FMU (1).
(b) Remove the FMU (1) from the fuel pump.

Subtask 73-12-41-020-057-A ** ON A/C NOT FOR ALL

B. Removal of the Fuel Tube and Disconnection of the Rigid Fuel Tubes
(1) Remove the fuel tube (11).

Electrical Connectors and Fuel Tubes ** ON A/C NOT FOR ALL

Pre SBE 73-0078
(a) Remove the bolt (23), the nut (21) and the washer (22) which attach the clip (24) to the bracket at detail E.
(b) Remove the bolt (28), the clipnut (25), the spacer (30) and the washer (27) which attach the clips (26) and (29) to the bracket at detail G.
(c) Remove the bolt (32), the nut (34) and the washers (31) and (33) which attach the clip (35) to the lug at detail H.
(d) Remove the bolt (36), the nut (38) and the washer (40) which attach the clips (37) and (39) to the lug at detail I.
(e) Remove the bolt (46), the nut (43) the washers (42) and (45) which attach the clips (41) and (44) to the lug at detail J.
(f) Remove the bolt (49), the clipnut (47) and the washer (50) which attach the clips (48) and (51) to the bracket at detail L.
(g) Cut out and discard the lockwire which safeties the union nut of the fuel tube (61) to the fuel tube (11) at detail F.
(h) Disconnect the union nut of the fuel tube (61) from the fuel tube (11) at detail F. Use the IAE1R18003 WRENCH.
(i) Cut and discard the lockwire which safeties the union nut of the fuel tube (62) to the fuel tube (11) at detail K.
(j) Disconnect the union nut of the fuel tube (62) from the fuel tube (11) at detail K.
(k) Cut and discard the lockwire which safeties the union nut of the fuel tube (69) to the fuel tube (11) at detail D.
(l) Disconnect the union nut of the fuel tube (69) from the fuel tube (11) at detail D. Use the IAE1R18003 WRENCH.
(m) Remove the three bolts (65) which attach the fuel tube (11) to the FCOC at detail C.
(n) Remove and discard the sealing ring (68) from the fuel tube (11) at detail C.

NOTE: Do not remove the restrictor (66) and the retaining ring (67) from the fuel tube (11) at detail C.

(o) Remove the three bolts (63) which attach the fuel tube (11) to the fuel pump at detail M.
(p) Remove and discard the sealing ring (64) from the fuel tube (11) at detail M.
(q) Remove the fuel tube (11) from the fuel pump.
(2) Remove the fuel tubes (11) and (17)

Electrical Connectors and Fuel Tubes ** ON A/C NOT FOR ALL

SBE 73-0078
(a) Remove the bolt (23), the nut (21) and the washer (22) which attach the clip (24) to the bracket at detail E. Clipping point 0306.
(b) Remove the bolt (28), the clipnut (25), the spacer (30) and the washer (27) which attach the clips (26) and (29) to the bracket at detail G. Clipping point 0305.
(c) Remove the bolt (100), the spacer (102), the nut (103) and the washer (105) which attach the clips (101) and (104) to the lug at detail I. Clipping point 0304.
(d) Remove the bolt (112), the spacer (110), the nut (108) and the washers (107) and (111) which attach the clips (106) and (109) to the lug at detail J. Clipping point 0319.
(e) Remove the bolt (49), the clipnut (47) and the washer (50) which attach the clips (48) and (51) to the bracket at detail L. Clipping point 0302.
(f) Cut and discard the lockwire which safeties the union nut of the fuel tube (61) to the fuel tube (117) at detail F.
(g) Disconnect the union nut of the fuel tube (61) from the fuel tube (117) at detail F. Use IAE1R18003 WRENCH.
(h) Cut and discard the lockwire which safeties the union nut of the fuel tube (62) to the fuel tube (11) at detail K.
(i) Disconnect the union nut of the fuel tube (62) from the fuel tube (11) at detail K.
(j) Cut and discard the lockwire which safeties the union nut of the fuel tube (69) to the fuel tube (117).
(k) Disconnect the union nut of the fuel tube (69) from the fuel tube (117). Use IAE1R18003 WRENCH.
(l) Remove the three bolts (116) and three nuts (113) which attach the fuel tube (11) to the fuel tube (117).

NOTE: Do not remove the restrictor (114) and the retaining ring (118) from the fuel tube (11).

(m) Remove the three bolts (119) which attach the fuel tube (11) to the FCOC.
(n) Remove and discard the sealing rings (110) and (115) from the fuel tube (11).
(o) Remove the three bolts (120) which attach the fuel tube (117) to the fuel pump at detail M.
(p) Remove and discard the sealing ring (121) from the fuel tube (117) at detail M.
(q) Remove the fuel tube (117) from the fuel pump.

END of SBE
(3) Disconnect the rigid fuel tubes (73) and (71) from the FDRV and the fuel pump (Ref. AMM TASK 73-11-47-000-010) (Ref. AMM TASK 73-11-47-000-011).

Rigid Fuel Tubes and Fuel Flow Transmitter ** ON A/C NOT FOR ALL

Subtask 73-12-41-010-059-A ** ON A/C NOT FOR ALL

C. Removal of the Fuel Flow Transmitter
(1) Remove the fuel flow transmitter (72) (Ref. AMM TASK 73-31-17-000-010)

Rigid Fuel Tubes and Fuel Flow Transmitter ** ON A/C NOT FOR ALL

NOTE: It is necessary to remove the fuel flow transmitter to make sufficient space to remove the fuel pump.

Subtask 73-12-41-020-058-A ** ON A/C NOT FOR ALL

D. Removal of the Fuel Pump
(1) Remove the fuel pump (83).

LP/HP Fuel Pump ** ON A/C NOT FOR ALL

CAUTION: HOLD THE WEIGHT OF THE LP/HP FUEL PUMP DURING REMOVAL OF THE V-BAND CLAMP TO PREVENT DAMAGE TO THE PUMP SHAFT AND SPLINE.

(a) Remove the clamps (82).
1 Disengage the fail-safe latch of the clamp (82) with a screwdriver.
2 Remove the stiff-nut from the T-bolt.
3 Remove the clamp (82).
(b) Remove the fuel pump (83).
(c) Remove and discard the sealing rings (81) and (86).
(2) Put the applicable COVER - PROTECTION on all of the openings.

[Rev.10 from 2021] 2026.04.01 13:01:26 UTC