W DOC AIRBUS | AMM A320F

Installation of the Fuel Tubes [CFMB]

TASK 73-11-49-400-041-A
Installation of the Fuel Tubes

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** 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
ACCESS PLATFORM 1M(3 FT)
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 25 and 20 lbf.in (0.28 and 0.23 m.daN ) T
No specific
Torque wrench: range to between 160 and 150 lbf.in (1.81 and 1.70 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CP2442)
engine oil
(Material No.CP8001)
lockwire 0.032 in. (0.8 mm) dia.
(Material No.CP8002)
lockwire 0.032 in. (0.8 mm) dia
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
45
PACKINGS
AIPC 73-11-49-01-020
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 71-00-00-710-001-B
Dry Motoring Check
TASK 71-13-00-010-040-B
Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B
Closing of the Fan Cowl Doors
F Fuel Tubes
3. Job Set-up
Subtask 73-11-49-865-051-A ** ON A/C NOT FOR ALL
A. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VUENGINE/1/HP FUEL SOV1KC1A01
FOR FIN: 1000EM2 (ENGINE2)
49VUENGINE/2/HP FUEL SOV1KC2A02
Subtask 73-11-49-865-059-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VUFUEL/LP VALVE/MOT1/ENG11QGA08
121VUFUEL/LP VALVE/MOT2/ENG13QGM25
FOR FIN: 1000EM2 (ENGINE2)
49VUFUEL/LP VALVE/MOT1/ENG22QGA09
121VUFUEL/LP VALVE/MOT2/ENG24QGM26
Subtask 73-11-49-860-051-A ** ON A/C NOT FOR ALL
C. Aircraft Maintenance Configuration
   (1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) 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(S) is in position to tell persons not to energize the FADEC 1(2).
   (3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
   (4) On the circuit breaker 1KC1(2), make sure that a WARNING NOTICE(S) is in position to tell the persons not to open it (them).
Subtask 73-11-49-010-051-A ** ON A/C NOT FOR ALL
D. Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
   (1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
   (2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
4. Procedure
Subtask 73-11-49-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Fuel Tubes
   (1) Install the fuel tubes.
     (a) Remove the protective covers from the tube coupling nuts, the fuel filter, the pressure switch, and the electrical connector 4000ELA.
     (b) Connect the upper tubes (5) to the high pressure port and (10) to the low pressure port in the pressure switch. Do not tighten the coupling nuts.
     (c) Connect the lower tubes (15) and (20) to the upper tubes (10) and (5). Do not tighten the coupling nuts.
     (d) Lubricate:
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
       1 Lubricate the packings (45) with engine oil (Material No.CP2442) .
     (e) Put the AIPC 73-11-49-01-020 PACKINGS (45) on the unions (40).
     (f) Install the unions (40) in the fuel filter.
NOTE: Make sure you install the unions (40) with the small orifice mating with the tubes.
     (g) TORQUE the unions (40) to between 160 and 150 lbf.in (1.81 and 1.70 m.daN ) T.
     (h) Connect the lower tubes (15) to the low pressure port and (20) to the high pressure port in the fuel filter. Do not tighten the coupling nuts.
     (i) Loosely attach the tubes to the brackets with the clamps (30), the bolts (25), and the nuts (35).
     (j) Loosely attach the tubes together with the clamps (30), the bolts (25), and the nuts (35).
     (k) Make sure that the tubes are aligned correctly.
     (l) TORQUE the upper tubes (5) and (10) coupling nuts to between 160 and 150 lbf.in (1.81 and 1.70 m.daN ) T.
     (m) TORQUE the lower tubes (15) and (20) coupling nuts to between 160 and 150 lbf.in (1.81 and 1.70 m.daN ) T.
     (n) Torque the coupling nuts:
CAUTION: USE A SECOND WRENCH TO APPLY COUNTER TORQUE TO THE TUBES WHEN YOU CONNECT THE LOWER TUBES TO THE UPPER TUBES.
       1 TORQUE the coupling nuts that connect the lower tubes (15) and (20) to the upper tubes (10) and (5) to between 160 and 150 lbf.in (1.81 and 1.70 m.daN ) T.
     (o) TORQUE the nuts (35) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN ) T.
     (p) Connect the electrical connector 4000ELA to the pressure switch. Tighten the connector by hand plus one-eighth turn.
   (2) Install the insulation housing as follows:
     (a) Install the insulation housing (50) on the pressure switch.
     (b) Put a loop of CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia around the capstan. Twist the lockwire around the insulation housing (50) and attach it to the capstan on the opposite side.
NOTE: Do not tighten the lockwire more than necessary to hold the insulation housing in position on the pressure switch.
Subtask 73-11-49-942-050-A ** ON A/C NOT FOR ALL
B. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the access platform(s).
   (3) Remove the WARNING NOTICE(S).
Subtask 73-11-49-865-057-A ** ON A/C NOT FOR ALL
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VUFUEL/LP VALVE/MOT1/ENG11QGA08
121VUFUEL/LP VALVE/MOT2/ENG13QGM25
FOR FIN: 1000EM2 (ENGINE2)
49VUFUEL/LP VALVE/MOT1/ENG22QGA09
121VUFUEL/LP VALVE/MOT2/ENG24QGM26
Subtask 73-11-49-710-050-A ** ON A/C NOT FOR ALL
D. Do a dry motoring check (Ref. AMM TASK 71-00-00-710-001).
5. Close-up
Subtask 73-11-49-410-050-A ** ON A/C NOT FOR ALL
A. Close Access
   (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
     (a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
     (b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 73-11-49-862-051-A ** ON A/C NOT FOR ALL
B. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.01 02:58:06 UTC
"Aviabrain" 2025