W DOC AIRBUS | AMM A320F

Installation of the APU Fuel Line

TASK 28-22-47-400-001-A
Installation of the APU Fuel Line

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING: OBEY THE FUEL SAFETY PROCEDURES.
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.
1. Reason for the Job
Self Explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 1M(3 FT)
No specific
1
ACCESS PLATFORM 3M (10 FT)
No specific
1
BRUSH - BRISTLED, SOFT
No specific
AR
CAP - BLANKING
No specific
2
CONTAINER 5 L (1.32 USGAL)
No specific
1
WARNING NOTICE(S)
No specific
Torque wrench: range to between 5.31 and 4.85 m.daN (39.16 and 35.77 lbf.ft ) T
98D28207510000
1
SLIDE CONE - APU FUEL
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.01ABA1)
Turbine Fuel-- Kerosene -
(Material No.03FAB1)
Mineral Oil base Grease-- Vaseline or Petrolatum -
(Material No.04QAB2)
Coating_- Flexible Structure
(Material No.04TMM9)
Varnish-- - Structure Legacy
(Material No.06AAC1)
Polysulfide Sealant-General Purpose Interfay -
(Material No.06ABC1)
Polysulfide Sealant-Fuel Tank Interfay -
(Material No.06AEA1)
Polysulfide Sealant-Low Adhesion Brushable -
(Material No.06AEB2)
Polysulfide Sealant-Low Adhesion Fillet Structure
(Material No.14QEB1)
Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
151BW, 161AW, 161BW, 161CW, 161DW, 241HL, 312AR, 314AR, 734
151CW, 151DW, 151EW, 151HW, 151JW
151RW
151SW, 151TW, 151UW, 151VW
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
22
O-RING
AIPC 28-22-03-01-080
6
O-RING
AIPC 28-22-03-01-080
13
O-RING
AIPC 28-22-04-02-060
10
O-RING
AIPC 28-22-04-03-030
5
O-RING
AIPC 28-22-04-03-030
4
O-RING
AIPC 28-22-04-04-030
30
O-RING
AIPC 28-22-05-01-010
33
O-RING
AIPC 28-22-05-01-010
7
O-RING
AIPC 28-22-05-01-010
36
O-RING
AIPC 28-22-05-01-020
39
O-RING
AIPC 28-22-05-01-020
26
O-RING
AIPC 28-22-05-01-040
29
O-RING
AIPC 28-22-05-01-040
28
O-RING
AIPC 28-22-05-01-050
31
O-RING
AIPC 28-22-05-01-050
27
O-RING
AIPC 28-22-05-01-060
30
O-RING
AIPC 28-22-05-01-060
8
O-RING
AIPC 28-22-83-01-090
81
O-RING
AIPC 28-22-83-01-090
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 20-28-00-912-802-A
Electrical Bonding - General Maintenance Procedure
TASK 25-55-12-400-001-A
Installation of the Aft Cargo-Compartment Partition at FR65
TASK 28-00-00-910-001-A
Fuel Safety Procedures
TASK 28-10-00-910-002-A
Access to the Fuel Tanks and the Work Areas
TASK 28-22-00-710-001-A
Operational Test of the APU Fuel-Pump System on Ground to Purge the Fuel Line
TASK 28-22-00-790-001-A
Leak Test of the APU Fuel-Line Shroud
TASK 28-22-00-790-002-A
Leak Test of the APU Fuel Line
TASK 28-25-00-650-001-A
Pressure Defuel
TASK 32-12-00-010-001-A
Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A
Close the Main Gear Doors after Access
TASK 51-78-00-615-002-A
Aircraft Cleaning after a Hydraulic Fluid Leakage
TASK 52-30-00-860-001-A
Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A
Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-41-23-010-801-A
Opening of Access Door 314AR
TASK 52-41-23-410-801-A
Closing of Access Door 314AR
TASK 53-32-12-000-002-A
Removal of the Cabin Floor Panels
TASK 53-32-12-400-002-A
Installation of the Cabin Floor Panels
TASK 57-17-11-000-001-A
Removal of Access Cover 147AZ(148AZ)
TASK 57-17-11-000-001-B
Removal of Access Cover 148AZ or/and the ACT-Equipment Support Door
TASK 57-17-11-400-001-A
Installation of Access Cover 147AZ(148AZ)
TASK 57-17-11-400-001-B
Installation of Access Cover 148AZ or/and the ACT-Equipment Support-Door
F APU Fuel Line between FR36 and FR42 ** ON A/C NOT FOR ALL
F APU Fuel Line
F APU Fuel Line between FR46 and FR47 ** ON A/C NOT FOR ALL
F APU Fuel Line between FR42 and FR46
F APU Fuel Line between FR36 and FR42 ** ON A/C NOT FOR ALL
F APU Fuel Line between FR46 and FR47 ** ON A/C NOT FOR ALL
F APU Drain Line ** ON A/C NOT FOR ALL
F APU Drain Line ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 28-22-47-941-053-A
A. Safety Precautions
   (1) You must obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001) when you do work on the fuel system.
WARNING: YOU MUST PUT ON AND ATTACH A SAFETY HARNESS BEFORE YOU START WORK:
  • ON THE THS OR IN THE REAR FUSELAGE
  • ON TOP OF THE WINGS OR PYLONS.
WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.
   (2) Put on and attach a safety harness before you start work in the work area
   (3) Put a WARNING NOTICE(S) in position:
  • on the panel 40VU, to tell persons not to operate the fuel system
  • on the panel 25VU, to tell persons not to operate the APU
  • on the panel 800VU, to tell persons not to refuel the aircraft.
Subtask 28-22-47-865-052-A
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUAPU/FUEL/BLOW OFF/PUMP2QCB14
** ON A/C NOT FOR ALL
121VUAPU/FUEL/BLOW OFF/CTL1QCK39
** ON A/C ALL
121VUAPU/FUEL/LP VALVE/CTL1QFM40
121VUAPU/FUEL/LP VALVE/SPLY2QFM39
121VUAPU/FUEL/PUMP/CTL3QCM38
** ON A/C NOT FOR ALL
121VUAPU/FUEL/BLOW OFF/CTL1QCP38
Subtask 28-22-47-860-050-A ** ON A/C NOT FOR ALL
C. Aircraft Maintenance Configuration
   (1) Access to the APU fuel line between FR41 and FR42.
     (a) In the cabin compartment, make sure that the cabin floor panel 241HL is removed (Ref. AMM TASK 53-32-12-000-002).
   (2) Access to the APU fuel line between FR42 and FR70.
     (a) Make sure the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
     (b) Make sure the applicable access panels are removed for the APU fuel line:
  • Between the FR46 and FR47
    remove 151BW
  • Between the FR47 and FR49
    remove 151CW
  • Between the FR49 and FR52
    remove 151DW
  • Between the FR52 and FR55
    remove 151EW
  • Between the FR55 and FR58
    remove 151HW
  • Between the FR58 and FR59
    remove 151JW
  • Between the FR59 and FR62
    remove 161AW
  • Between the FR62 and FR63
    remove 161BW
  • Between the FR63 and FR65
    remove 161CW
  • Between the FR65 and FR70
    remove 161DW.
   (3) Access to the APU fuel line aft of FR70.
     (a) Make sure the ACCESS PLATFORM 3M (10 FT) is in position below the access door 312AR or 314AR as applicable.
     (b) Open the applicable access panels for the APU fuel line:
     (c) Set the light switch to on.
     (d) Be careful not to step on a closed access door.
   (4) Make sure there is a CONTAINER 5 L (1.32 USGAL) in position below the applicable connections.
   (5) Make sure the APU fuel line is drained.
   (6) Make sure that the bonding straps (8) and (17) are put temporarily to stowage positions with tapes.
Subtask 28-22-47-860-050-B ** ON A/C NOT FOR ALL
C. Aircraft Maintenance Configuration
   (1) Access to the APU fuel line between FR41 and FR42.
     (a) In the cabin compartment, make sure that the cabin floor panel 241HL is removed (Ref. AMM TASK 53-32-12-000-002).
   (2) Access to the APU fuel line between FR42 and FR70.
     (a) Make sure the AFT cargo compartment door is open (Ref. AMM TASK 52-30-00-860-001) .
     (b) Make sure the applicable access panels are removed for the APU fuel line:
  • Between the FR46 and FR47
    remove 151BW
  • Between the FR47 and FR47.4
    remove 151RW
  • Between the FR47.4 and FR49
    remove 151CW
  • Between the FR49 and FR52
    remove 151DW
  • Between the FR52 and FR55
    remove 151EW
  • Between the FR55 and FR58
    remove 151HW
  • Between the FR58 and FR59
    remove 151JW
  • Between the FR59 and FR62
    remove 161AW
  • Between the FR62 and FR63
    remove 161BW
  • Between the FR63 and FR65
    remove 161CW
  • Between the FR65 and FR70
    remove 161DW.
   (3) Access to the APU fuel line aft of FR70.
     (a) Make sure the ACCESS PLATFORM 3M (10 FT) is in position below the access door 312AR or 314AR as applicable.
     (b) Open the applicable access panels for the APU fuel line:
     (c) Set the light switch to on.
     (d) Be careful not to step on a closed access door.
   (4) Make sure there is a CONTAINER 5 L (1.32 USGAL) in position below the applicable connections.
   (5) Make sure the APU fuel line is drained.
   (6) Make sure that the bonding straps (8) and (17) are put temporarily to stowage positions with tapes.
Subtask 28-22-47-860-050-C ** ON A/C NOT FOR ALL
C. Aircraft Maintenance Configuration
   (1) Access to the APU fuel line between FR41 and FR42.
     (a) In the cabin compartment, make sure that the cabin floor panel 241HL is removed (Ref. AMM TASK 53-32-12-000-002).
   (2) Access to the APU fuel line between FR42 and FR70.
     (a) Make sure the AFT cargo compartment door is open (Ref. AMM TASK 52-30-00-860-001) .
     (b) Make sure the applicable access panels are removed for the APU fuel line:
  • Between the FR46 and FR53
    remove 151SW
  • Between the FR53 and FR56
    remove 151TW
  • Between the FR56 and FR58
    remove 151UW
  • Between the FR58 and FR59
    remove 151VW
  • Between the FR59 and FR62
    remove 161AW
  • Between the FR62 and FR63
    remove 161BW
  • Between the FR63 and FR65
    remove 161CW
  • Between the FR65 and FR70
    remove 161DW.
   (3) Access to the APU fuel line aft of FR70.
     (a) Make sure the ACCESS PLATFORM 3M (10 FT) is in position below the access door 312AR or 314AR as applicable.
     (b) Open the applicable access panels for the APU fuel line:
     (c) Set the light switch to on.
     (d) Be careful not to step on a closed access door.
   (4) Make sure there is a CONTAINER 5 L (1.32 USGAL) in position below the applicable connections.
   (5) Make sure the APU fuel line is drained.
   (6) Make sure that the bonding straps (8) and (17) are put temporarily to stowage positions with tapes.
Subtask 28-22-47-010-068-A
D. Get Access
   (1) Get access to the APU fuel line installed in the center tank and installed between FR42 and FR46.
     (a) You must obey the safety procedures when you do work in a fuel tank (Ref. AMM TASK 28-00-00-910-001) and (Ref. AMM TASK 28-10-00-910-002).
     (b) Make sure the center tank is defueled (Ref. AMM TASK 28-25-00-650-001).
     (c) Make sure the main door of the left main gear is open (Ref. AMM TASK 32-12-00-010-001) .
     (d) Put the ACCESS PLATFORM 2M (6FT) - ADJUSTABLE in position under the main door of the left main gear.
     (e) Make sure the manhole cover 147AZ is removed (Ref. AMM TASK 57-17-11-000-001).
4. Procedure
Subtask 28-22-47-210-050-A
A. Preparation for Installation
   (1) Remove the PLUG-BLANKING from each disconnected line end.
   (2) Clean the component interfaces and the adjacent area.
   (3) Do an inspection of the component interfaces and the adjacent area.
Subtask 28-22-47-420-052-A ** ON A/C NOT FOR ALL
B. Installation of the APU fuel line
   (1) Install the pipe (32) and the elbow (28) as follows:
F APU Fuel Line between FR36 and FR42 ** ON A/C NOT FOR ALL
NOTE: To do this task, one person must be in the tank and the other person must stay near the tank.
     (a) Lubricate the O-rings (29), (30), (31) and (33) with the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
     (b) Carefully put the pipe (32) into the fuel tank.
     (c) Install the new AIPC 28-22-05-01-040 O-RING (29) on the elbow (28).
     (d) Install the new AIPC 28-22-05-01-060 O-RING (30) on the elbow (28).
     (e) Install the new AIPC 28-22-05-01-050 O-RING (31) on the elbow (28).
     (f) Install the new AIPC 28-22-05-01-010 O-RING (33) on the pipe (32).
     (g) Put the elbow (28) over the pipe (32).
     (h) Attach the elbow (28) to the upper box with the bolts (27), the washers (23) and the nuts (22).
     (i) Attach the bonding lead (24) to the elbow (28) with the washer (25) and the bolt (26) (Ref. AMM TASK 20-28-00-912-802).
   (2) Install the pipe assembly (14) and the elbow (6) as follows:
F APU Fuel Line between FR36 and FR42 ** ON A/C NOT FOR ALL
     (a) Hold the pipe assembly (14) in position and tighten the nut (15).
     (b) Lubricate the O-ring (7) with the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
     (c) Lubricate the O-ring (39) with the Turbine Fuel-- Kerosene - (Material No.01ABA1) .
     (d) Install the new AIPC 28-22-05-01-010 O-RING (7) on the elbow (6).
     (e) Install the new AIPC 28-22-05-01-020 O-RING (39) on the elbow (6).
     (f) Hold the elbow (6) in position and tighten the nut (36).
     (g) Attach the elbow (6) to the APU LP fuel valve with the nuts (1).
     (h) Connect the bonding lead (3) to the elbow (6) and install the bolt (37) and the nut (38) (Ref. AMM TASK 20-28-00-912-802).
     (i) Apply a thin layer of the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the inner surface of the clamps (4), (10), (12) and (21).
     (j) Install the clamps (4), (10), (12) and (21) as follows:
  • The clamp (4) on the elbow (6)
  • The clamps (10) and (12) on the pipe assembly (14)
  • The clamp (21) on the pipe (32).
     (k) Connect the bonding lead (17) to the clamp (21) and install:
     (l) Connect the bonding lead (34) to the clamp (12) and install the bolt (35) and the nut (13) (Ref. AMM TASK 20-28-00-912-802).
     (m) Connect the bonding lead (9) to the clamp (10) and install the bolt (8) and the nut (11) (Ref. AMM TASK 20-28-00-912-802).
     (n) Connect the bonding leads (3) and (9) to the clamp (4) and install the bolt (2) and the nut (5) (Ref. AMM TASK 20-28-00-912-802).
   (3) Install the inner hose assembly (2) between FR41 and FR48 as follows:
CAUTION: YOU MUST USE TWO WRENCHES AND HOLD THE COMPONENT WHEN YOU REMOVE/INSTALL THE PIPE COUPLINGS AND/OR UNIONS. THIS PREVENTS DAMAGE TO THE COMPONENT.
     (a) Connect the APU fuel line between FR47 and FR48 as follows:
F APU Fuel Line ** ON A/C NOT FOR ALL
NOTE: The procedure to connect the APU fuel line between FR47 and FR48 is given. This procedure is typical for the other sections of the APU fuel line until FR70.
       1 Put the APU fuel line in position and hand tighten the nut (2).
       2 TORQUE the nuts (2) to between 5.31 and 4.85 m.daN (39.16 and 35.77 lbf.ft ) T.
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
       3 Safety the nuts (2) with the 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
       4 Remove the CONTAINER 5 L (1.32 USGAL).
       5 Apply a thin layer of the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the inner surface of the clamps (12) and (16).
       6 Install the clamps (12) and (16) on the fuel hose components (11) with:
  • The bolts (13)
  • The washers (15)
  • The nuts (14).
     (b) Install the 98D28207510000 SLIDE CONE - APU FUEL on the other end of the inner hose assembly (2).
     (c) Install the inner hose assembly (2) through FR47 until FR46 as follows:
F APU Fuel Line between FR46 and FR47 ** ON A/C NOT FOR ALL
       1 Along the inner hose assembly (2) install:
     (d) Install the inner hose assembly (2) through FR46 until FR42 as follows:
F APU Fuel Line between FR42 and FR46 ** ON A/C NOT FOR ALL
       1 At FR42, install the attachment ring (3) along the inner hose assembly (2).
     (e) Install the inner hose assembly (2) through FR42 until FR41 as follows:
F APU Fuel Line between FR42 and FR46 ** ON A/C NOT FOR ALL
       1 Install the outer hose assembly (1) along the inner hose assembly (2) through FR42 until FR46.
       2 Lubricate the O-ring (13) with the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
       3 Install the new AIPC 28-22-04-02-060 O-RING (13) on the outer hose assembly (1).
       4 Install the reducing sleeve (7) on the outer hose assembly (1).
       5 Make sure that the outer hose assembly (1) goes 20 +3 mm or -3 mm (0.7874 +0.1181 in. or -0.1181 in.) into the reducing sleeve (7).
       6 Remove the 98D28207510000 SLIDE CONE - APU FUEL from the inner hose assembly (2).
       7 Hold the inner hose assembly (2) in position and hand tighten the nut (6).
       8 TORQUE the nut (6) to between 5.31 and 4.85 m.daN (39.16 and 35.77 lbf.ft ) T.
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
       9 Safety the nut (6) with 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
       10 Attach the reducing sleeve (7) to the elbow (28) in the upper box.
Subtask 28-22-47-420-052-C ** ON A/C NOT FOR ALL
B. Installation of the APU fuel line
   (1) Install the pipe (29) and the elbow (25) as follows:
F APU Fuel Line between FR36 and FR42 ** ON A/C NOT FOR ALL
F APU Fuel Line between FR36 and FR42 ** ON A/C NOT FOR ALL
NOTE: To do this task, one person must be in the tank and the other person must stay near the tank.
     (a) Lubricate the O-rings (26), (27), (28), and (30) with the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
     (b) Carefully put the pipe (29) into the fuel tank.
     (c) Install the new AIPC 28-22-05-01-040 O-RING (26) on the elbow (25).
     (d) Install the new AIPC 28-22-05-01-060 O-RING (27) on the elbow (25).
     (e) Install the new AIPC 28-22-05-01-050 O-RING (28) on the elbow (25).
     (f) Install the new AIPC 28-22-05-01-010 O-RING (30) on the pipe (29).
     (g) Put the elbow (25) over the pipe (29).
     (h) Attach the elbow (25) to the upper box with the bolts (24), the washers (23) and the nuts (22).
   (2) Install the pipe assembly (14) and the elbow (6) as follows:
F APU Fuel Line between FR36 and FR42 ** ON A/C NOT FOR ALL
F APU Fuel Line between FR36 and FR42 ** ON A/C NOT FOR ALL
     (a) Hold the pipe assembly (14) in position and tighten the nut (15).
     (b) Lubricate the O-ring (7) with the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
     (c) Lubricate the O-ring (36) with the Turbine Fuel-- Kerosene - (Material No.01ABA1) .
     (d) Install the new AIPC 28-22-05-01-010 O-RING (7) on the elbow (6).
     (e) Install the new AIPC 28-22-05-01-020 O-RING (36) on the elbow (6).
     (f) Hold the elbow (6) in position and tighten the nut (33).
     (g) Attach the elbow (6) to the APU LP fuel valve with the nuts (1).
     (h) Connect the bonding lead (3) to the elbow (6) and install the bolt (34) and the nut (35) (Ref. AMM TASK 20-28-00-912-802).
     (i) Apply a thin layer of the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the inner surface of the clamps (4), (10), (12) and (21).
     (j) Install the clamps (4), (10), (12) and (21) as follows:
  • The clamp (4) on the elbow (6)
  • The clamps (10) and (12) on the pipe assembly (14)
  • The clamp (21) on the pipe (29).
     (k) Connect the bonding lead (17) to the clamp (21) and install the:
     (l) Connect the bonding lead (31) to the clamp (12) and install the bolt (32) and the nut (13) (Ref. AMM TASK 20-28-00-912-802).
     (m) Connect the bonding lead (9) to the clamp (10) and install the bolt (8) and the nut (11) (Ref. AMM TASK 20-28-00-912-802).
     (n) Connect the bonding leads (3) and (9) to the clamp (4) and install bolt (2) and the nut (5) (Ref. AMM TASK 20-28-00-912-802).
   (3) Install the inner hose assembly (2) between FR41 and FR48 as follows:
CAUTION: YOU MUST USE TWO WRENCHES AND HOLD THE COMPONENT WHEN YOU REMOVE/INSTALL THE PIPE COUPLINGS AND/OR UNIONS. THIS PREVENTS DAMAGE TO THE COMPONENT.
     (a) Connect the APU fuel line between FR47 and FR48 as follows:
F APU Fuel Line ** ON A/C NOT FOR ALL
NOTE: The procedure to connect the APU fuel line between FR47 and FR48 is given. This procedure is typical for the other sections of the APU fuel line until FR70.
       1 Move the coupling sleeves (17) along the APU fuel line components (11).
       2 Put the APU fuel line in position and hand tighten the nut (2).
       3 TORQUE the nuts (2) to between 5.31 and 4.85 m.daN (39.16 and 35.77 lbf.ft ) T.
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
       4 Safety the nuts (2) with the 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
       5 Remove the CONTAINER 5 L (1.32 USGAL).
       6 Apply a thin layer of the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the inner surface of the clamps (12) and (16).
       7 Install the clamps (12) and (16) on the fuel hose components (11) with:
  • The bolts (13)
  • The washers (15)
  • The nuts (14).
     (b) Install the 98D28207510000 SLIDE CONE - APU FUEL on the other end of the inner hose assembly (2).
     (c) Install the inner hose assembly (2) through FR47 until FR46 as follows:
F APU Fuel Line between FR46 and FR47 ** ON A/C NOT FOR ALL
F APU Fuel Line between FR46 and FR47 ** ON A/C NOT FOR ALL
       1 Along the inner hose assembly (2) put:
     (d) Install the inner hose assembly (2) through FR46 until FR42 as follows:
F APU Fuel Line between FR42 and FR46 ** ON A/C NOT FOR ALL
       1 At FR42, install the attachment ring (3) along the inner hose assembly (2).
     (e) Install the inner hose assembly (2) through FR42 until FR41 as follows:
F APU Fuel Line between FR42 and FR46 ** ON A/C NOT FOR ALL
       1 Install the outer hose assembly (1) along the inner hose assembly (2) through FR42 until FR46.
       2 Lubricate the O-ring (13) with the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
       3 Install the new AIPC 28-22-04-02-060 O-RING (13) on the outer hose assembly (1).
       4 Install the reducing sleeve (7) on the outer hose assembly (1).
       5 Make sure that the outer hose assembly (1) goes 20 +3 mm or -3 mm (0.7874 +0.1181 in. or -0.1181 in.) into the reducing sleeve (13).
       6 Remove the 98D28207510000 SLIDE CONE - APU FUEL from the inner hose assembly (2).
       7 Hold the inner hose assembly (2) in position and hand tighten the nut (6).
       8 TORQUE the nut (6) to between 5.31 and 4.85 m.daN (39.16 and 35.77 lbf.ft ) T.
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
       9 Safety the nut (6) with 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
       10 Attach the reducing sleeve (7) to the elbow (25) in the upper box.
Subtask 28-22-47-420-055-A ** ON A/C NOT FOR ALL
C. Installation of the APU Drain Line
F APU Drain Line ** ON A/C NOT FOR ALL
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
   (1) Remove the CAP - BLANKING from the disconnected line ends.
   (2) Lubricate the new AIPC 28-22-03-01-080 O-RING (22) with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
   (3) Install the new O-ring (22) on the union (21).
   (4) Install the union (21).
   (5) Put the drain pipe (5) in position and tighten the nut (20) on the union (21).
   (6) Apply a layer of Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) and Varnish-- - Structure Legacy (Material No.04TMM9) to the union (21).
   (7) Install the clamps (16) on the drain pipe (5) as follows:
     (a) Put the clamps (16) in position and install the bolts (14) and the washers (15).
     (b) Tighten the bolts (14).
   (8) Put the drain pipe (4) in position and tighten the nut (25) on the union (23) of the drain pipe (5).
   (9) Install the clamps (16) on the drain pipe (4) as follows:
     (a) Put the applicable spacers (18) and (19) and the clamps (16) in position and install the bolts (14), the washers (15) and the applicable nut (17).
     (b) Tighten the bolts (14) and the applicable nut (17).
   (10) Put the drain pipe (3) in position and tighten the nut (25) of the drain pipe (4) on the union (23) of the drain pipe (3).
   (11) Install the clamps (16) on the drain pipe (3) as follows:
     (a) Put the clamps (16) in position and install the bolts (14), the washers (15) and the nuts (17).
     (b) Tighten the nuts (17).
   (12) Put the drain pipe (2) in position and tighten the nut (25) of the drain pipe (3) on the union (23) of the drain pipe (2).
   (13) Put the union (10), the washer (11) and the nut (12) in position and tighten the nut (12).
   (14) Install the clamp (16) on the drain pipe (2) as follows:
     (a) Put the clamp (16) in position and install the bolt (14), the washer (15) and the nut (17).
     (b) Tighten the nut (17).
   (15) Tighten the nut (13) of the drain pipe (2) on the union (10).
   (16) Lubricate the new AIPC 28-22-03-01-080 O-RING (6) with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
   (17) Install the new O-ring (6) on the union (7).
   (18) Install the union (7).
   (19) Put the drain pipe (1) in position and tighten the nut (9) on the union (10).
   (20) Apply a layer of Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) and Varnish-- - Structure Legacy (Material No.04TMM9) to the union (10).
   (21) Tighten the nut (8) on the union (7).
Subtask 28-22-47-420-055-B ** ON A/C NOT FOR ALL
C. Installation of the APU Drain Line
F APU Drain Line ** ON A/C NOT FOR ALL
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
   (1) Remove the CAP - BLANKING from the disconnected line ends.
   (2) Lubricate the new AIPC 28-22-83-01-090 O-RING (81) with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
   (3) Install the O-ring (81) on the union (80).
   (4) Install the union (80) to the drainmast.
   (5) Install the clamp (72) on the drain pipe (6) as follows:
     (a) Put the drain pipe (6) and the clamp (72) in position and install the bolt (70) and the washer (71).
     (b) Tighten the bolt (70).
   (6) Tighten the nut (79) of the drain pipe (6) on the union (80).
   (7) Apply a layer of Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) and Varnish-- - Structure Legacy (Material No.04TMM9) to the union (80).
   (8) Install the bonding lead (74) on the drain pipe (6) as follows:
     (a) Put the clamp (77) in position on the drain pipe (6).
     (b) Install the bonding lead (74) with the bolt (76) and the washers (75) and (78) and the nut (73) (Ref. AMM TASK 20-28-00-912-802).
     (c) Tighten the nut (73).
   (9) Tighten the nut (65) of the drain pipe (6) on the union (67).
   (10) Install the clamps (72) on the drain pipe (5) as follows:
     (a) Put the drain pipe (5) and the clamps (72) in position and install the bolts (70) and the washers (71).
     (b) Tighten the bolts (70).
   (11) Tighten the nut (69) of the drain pipe (5) on the union (67).
   (12) Install the bonding lead (61) on the drain pipes (5) and (6) as follows:
     (a) Put the clamp (55) in position on the drain pipe (5).
     (b) Put the clamp (60) in position on the drain pipe (6).
     (c) Install the bonding lead (61) with (Ref. AMM TASK 20-28-00-912-802):
  • The bolts (53) and (63)
  • The washers (54), (56), (59) and (62)
  • The nuts (57) and (58).
     (d) Tighten the nuts (57) and (58).
   (13) Tighten the nut (64) of the drain pipe (5) on the union (66).
   (14) Install the clamps (50) on the drain pipe (4) as follows:
     (a) Put the drain pipe (4), the clamps (50) and the spacers (51) and (52) in position.
     (b) Install the bolts (47) and (48).
     (c) Tighten the bolts (47) and (48).
   (15) Tighten the nut (68) of the drain pipe (4) on the union (66).
   (16) Install the bonding lead (61) on the drain pipes (4) and (5) as follows:
     (a) Put the clamp (55) in position on the drain pipe (4).
     (b) Put the clamp (60) in position on the drain pipe (5).
     (c) Install the bonding lead (61) with (Ref. AMM TASK 20-28-00-912-802):
  • The bolts (53) and (63)
  • The washers (54), (56), (59) and (62)
  • The nuts (57) and (58).
     (d) Tighten the nuts (57) and (58).
   (17) Install the clamps (30) on the drain pipe (3) as follows:
     (a) Put the drain pipe (3) and the clamps (30) in position and install the bolts (28), the washers (29) and the nuts (31).
     (b) Tighten the nuts (31).
   (18) Tighten the nut (46) of the drain pipe (4) to the union (44).
   (19) Install the bonding lead (40) on the drain pipes (3) and (4) with (Ref. AMM TASK 20-28-00-912-802):
  • The bolts (32) and (42)
  • The washers (33), (35), (38) and (41)
  • The nuts (36) and (37).
     (a) Tighten the nuts (36) and (37).
   (20) Install the clamp (30) on the drain pipe (2) as follows:
     (a) Put the drain pipe (2) and the clamp (30) in position and install the bolt (28), the washer (29) and the nut (31).
     (b) Tighten the nut (31).
   (21) Tighten the nut (45) of the drain pipe (3) to the union (43).
   (22) Install the bonding lead (40) on the drain pipes (2) and (3) with (Ref. AMM TASK 20-28-00-912-802):
  • The bolts (32) and (42)
  • The washers (33), (35), (38) and (41)
  • The nuts (36) and (37).
     (a) Tighten the nuts (36) and (37).
   (23) Install the union (18) with the washer (19) and the nut (20).
   (24) Tighten the nut (20).
   (25) Tighten the nut (21) of the drain pipe (2) on the union (18).
   (26) Install the bonding lead (25) on the drain pipe (2) as follows:
     (a) Put the clamp (22) in position on the drain pipe (2).
     (b) Install the bonding lead (25) with the bolt (27), the washers (24) and (26) and the nut (23) (Ref. AMM TASK 20-28-00-912-802).
     (c) Tighten the nut (23).
   (27) Lubricate the new AIPC 28-22-83-01-090 O-RING (8) with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
   (28) Install the O-ring (8) on the union (9).
   (29) Install the union (9) to the elbow (7).
   (30) Put the drain pipe (1) in position and install:
  • The nut (17) of the drain pipe (1) on the union (18).
  • The nut (10) of the drain pipe (1) on the union (9).
   (31) Apply a layer of Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) and Varnish-- - Structure Legacy (Material No.04TMM9) to the unions (9) and (18).
   (32) Install the bonding lead (13) on the drain pipe (1) as follows:
     (a) Put the clamp (14) in position on the drain pipe (1).
     (b) Install the bonding lead (13) with the bolt (11), the washers (12) and (15) and the nut (16) (Ref. AMM TASK 20-28-00-912-802).
     (c) Tighten the nut (16).
Subtask 28-22-47-865-053-A
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUAPU/FUEL/BLOW OFF/PUMP2QCB14
** ON A/C NOT FOR ALL
121VUAPU/FUEL/BLOW OFF/CTL1QCK39
** ON A/C ALL
121VUAPU/FUEL/LP VALVE/CTL1QFM40
121VUAPU/FUEL/LP VALVE/SPLY2QFM39
121VUAPU/FUEL/PUMP/CTL3QCM38
** ON A/C NOT FOR ALL
121VUAPU/FUEL/BLOW OFF/CTL1QCP38
Subtask 28-22-47-790-050-A
E. Leak Test of the APU Fuel Line
   (1) Do an operational test of the APU fuel pump system to purge the fuel line (Ref. AMM TASK 28-22-00-710-001).
   (2) Do the leak test of the APU fuel line (Ref. AMM TASK 28-22-00-790-002).
     (a) Examine the connections of the APU fuel line for leaks.
NOTE: Leaks are not permitted.
If you find leaks, replace the items of the fuel line as necessary.
Subtask 28-22-47-420-054-A ** ON A/C NOT FOR ALL
F. Connection of the Shroud
   (1) Install the outer hose assembly (1) through FR42 and FR46 as follows:
F APU Fuel Line between FR42 and FR46 ** ON A/C NOT FOR ALL
     (a) Attach the reducing sleeve (7) to the structure with the bolts (14), the washers (15) and the nuts (16).
     (b) Connect the bonding lead (10) to the reducing sleeve (7) and install:
     (c) At FR42, attach the attachment ring (3) to the outer hose assembly (1) with the washers (4) and the bolts (5).
     (d) Seal the head of the bolts (5) with the Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) or Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) .
     (e) At the interface of the outer hose assembly (1) and FR42:
       1 Apply a layer of the Polysulfide Sealant-General Purpose Interfay - (Material No.06AAC1) or Polysulfide Sealant-Fuel Tank Interfay - (Material No.06ABC1) with BRUSH - BRISTLED, SOFT.
       2 Make sure that the sealant at the interface of the outer hose assembly (1) and FR42 is dry.
       3 Apply a layer of the Varnish-- - Structure Legacy (Material No.04TMM9) or Coating_- Flexible Structure (Material No.04QAB2) on the dried sealant surface.
     (f) Install the clamps (20) and (30) on the outer hose assembly (1) between the FR42 and FR46.
     (g) Install the bonding straps (24) on the clamps (20) (Ref. AMM TASK 20-28-00-912-802).
     (h) Attach the clamps (20) to the angle assemblies (23) with the bolts (21) and the washers (22).
     (i) Attach the clamps (30) to the angle assemblies (33) with the bolts (31) and the washers (32).
   (2) Install the elbow assemblies (9) and (17) between FR46 and FR47 as follows:
F APU Fuel Line between FR46 and FR47 ** ON A/C NOT FOR ALL
     (a) Install the attachment ring (3) and the bush (4) on the outer hose assembly (1).
     (b) Lubricate the O-rings (5) and (10) with the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
     (c) Install the new AIPC 28-22-04-03-030 O-RING (5) on the outer hose assembly (1).
     (d) Install the outer hose assembly (1) into the elbow assembly (9).
     (e) Attach the attachment ring (3) and the bush (4) to the elbow assembly (9) with:
  • The washers (6)
  • The bolts (7).
     (f) Install the new AIPC 28-22-04-03-030 O-RING (10) on the elbow assembly (9).
     (g) Install the elbow assembly (9) into the elbow assembly (17).
     (h) Install the retaining spring (11) between the elbow assembly (9) and (17).
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
     (i) Safety the retaining spring (11) with the 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -
     (j) Attach the elbow assembly (17) to the bracket assembly (15) with the bolts (16), the washers (14) and the nuts (13).
     (k) Apply a thin layer of the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the inner surface of the clamps (8), (12) and (18).
     (l) Install the clamps (8), (12) and (18) as follows:
       1 The clamp (8) on the elbow assembly (9).
       2 The clamps (12) and (18) on the elbow assembly (17).
     (m) Connect the bonding lead (21) to the clamp (18) and install:
     (n) Connect the bonding lead (26) to the clamp (12) and install:
     (o) Connect the bonding lead (26) to the clamp (8) and install:
   (3) Between FR47 and FR48, connect the elbow assembly (1) and coupling sleeve (17) as follows:
F APU Fuel Line ** ON A/C NOT FOR ALL
     (a) Lubricate the O-ring (4) with the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
     (b) Install the new AIPC 28-22-04-04-030 O-RING (4) on the elbow assembly (1).
     (c) Move the coupling sleeve (17) in position.
NOTE: Make sure the distance 'x' between the elbow assembly (1), the fuel line component (11) and the coupling sleeve (17) is 4.0 +2.0 mm or -2.0 mm (0.1575 +0.0787 in. or -0.0787 in.).
     (d) Install the retaining spring (6) between the elbow assembly (1) and the coupling sleeve (17).
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
     (e) Safety the retaining spring (6) with the 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
NOTE: Make sure the distance 'y' between the legs of the retaining springs is 24.0 +2.0 mm or -2.0 mm (0.9449 +0.0787 in. or -0.0787 in.).
     (f) Connect the bonding leads (8) to the coupling sleeve (17) and install:
Subtask 28-22-47-420-054-D ** ON A/C NOT FOR ALL
F. Connection of the Shroud
   (1) Install the outer hose assembly (1) through FR42 and FR46 as follows:
F APU Fuel Line between FR42 and FR46 ** ON A/C NOT FOR ALL
     (a) Attach the reducing sleeve (7) to the structure with the bolts (14), the washers (15) and the nuts (16).
     (b) Connect the bonding lead (10) to the reducing sleeve (7) and install:
     (c) At FR42, attach the attachment ring (3) to the outer hose assembly (1) with the washers (4) and the bolts (5).
     (d) Seal the head of the bolts (5) with the Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) or Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) .
     (e) At the interface of the outer hose assembly (1) and FR42:
       1 Apply a layer of the Polysulfide Sealant-General Purpose Interfay - (Material No.06AAC1) or Polysulfide Sealant-Fuel Tank Interfay - (Material No.06ABC1) with BRUSH - BRISTLED, SOFT.
       2 Make sure that the sealant at the interface of the outer hose assembly (1) and FR42 is dry.
       3 Apply a layer of the Varnish-- - Structure Legacy (Material No.04TMM9) or Coating_- Flexible Structure (Material No.04QAB2) on the dried sealant surface.
     (f) Install the clamps (20) and (30) on the outer hose assembly (1) between the FR42 and FR46.
     (g) Install the bonding straps (24) on the clamps (20) (Ref. AMM TASK 20-28-00-912-802).
     (h) Attach the clamps (20) to the angle assemblies (23) with the bolts (21) and the washers (22).
     (i) Attach the clamps (30) to the angle assemblies (33) with the bolts (31) and the washers (32).
   (2) Install the elbow assemblies (9) and (17) between FR46 and FR47 as follows:
F APU Fuel Line between FR46 and FR47 ** ON A/C NOT FOR ALL
     (a) Install the attachment ring (3) and the bush (4) on the outer hose assembly (1).
     (b) Lubricate the O-rings (5) and (10) with the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
     (c) Install the new AIPC 28-22-04-03-030 O-RING (5) on the outer hose assembly (1).
     (d) Install the outer hose assembly (1) into the elbow assembly (9).
     (e) Attach the attachment ring (3) and the bush (4) to the elbow assembly (9) with:
  • The washers (6)
  • The bolts (7).
     (f) Install the new AIPC 28-22-04-03-030 O-RING (10) on the elbow assembly (9).
     (g) Install the elbow assembly (9) into the elbow assembly (17).
     (h) Install the retaining spring (11) between the elbow assembly (9) and (17).
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
     (i) Safety the retaining spring (11) with the 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
     (j) Attach the elbow assembly (17) to the bracket assembly (15) with the bolts (16), the washers (14) and the nuts (13).
     (k) Connect the bonding lead (20) to the elbow assembly (17) and install:
     (l) Apply a thin layer of the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the inner surface of the clamps (8) and (12).
     (m) Install the clamps (8) on the elbow assembly (9).
     (n) Install the clamps (12) on the elbow assembly (17).
     (o) Connect the bonding lead (23) to the clamp (12) and install:
     (p) Connect the bonding lead (23) to the clamp (8) and install:
   (3) Between FR47 and FR48, attach the elbow assembly (1) and coupling sleeve (17) as follows:
F APU Fuel Line ** ON A/C NOT FOR ALL
     (a) Lubricate the O-ring (4) with the Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
     (b) Install the new AIPC 28-22-04-04-030 O-RING (4) on the elbow assembly (1).
     (c) Move the coupling sleeve (17) in position.
NOTE: Make sure the distance 'x' between the elbow assembly (1), the fuel line component (11) and the coupling sleeve (17) is 4.0 +2.0 mm or -2.0 mm (0.1575 +0.0787 in. or -0.0787 in.).
     (d) Install the retaining springs (6) between the elbow assembly (1) and the coupling sleeve (17).
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
     (e) Safety the retaining spring (6) with the 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
NOTE: Make sure the distance 'y' between the legs of the retaining springs is 24.0 +2.0 mm or -2.0 mm (0.9449 +0.0787 in. or -0.0787 in.).
     (f) Connect the bonding leads (8) to the coupling sleeve (17) and install:
Subtask 28-22-47-790-051-A
G. Leak Test of the Fuel Line Shroud
   (1) Do the leak test of the APU fuel line shroud (Ref. AMM TASK 28-22-00-790-001).
NOTE: Leaks are not permitted.
If you find leaks, replace the items of the fuel line shroud as necessary.
5. Close-up
Subtask 28-22-47-410-051-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the manhole cover 147AZ (Ref. AMM TASK 57-17-11-400-001).
Subtask 28-22-47-410-050-A ** ON A/C NOT FOR ALL
B. Close Access
   (1) If fuel fell on aircraft components or the structure, do the procedure for cleaning after a fuel leakage (Ref. AMM TASK 51-78-00-615-002).
   (2) Make sure that the work area is clean and clear of tools and other items.
   (3) For the APU fuel line between FR41 and FR42.
     (a) Install the floor panel 241HL (Ref. AMM TASK 53-32-12-400-002).
   (4) For the APU fuel line between FR42 and FR46.
     (a) Remove the ACCESS PLATFORM 1M(3 FT).
     (b) Close the LH main landing-gear door 734 (Ref. AMM TASK 32-12-00-410-001).
   (5) For the APU fuel line between FR46 and FR70.
     (a) Install the applicable access panels for the APU fuel line:
  • between the FR46 and FR47
    install 151BW
  • between the FR47 and FR49
    install 151CW
  • between the FR49 and FR52
    install 151DW
  • between the FR52 and FR55
    install 151EW
  • between the FR55 and FR58
    install 151HW
  • between the FR58 and FR59
    install 151JW
  • between the FR59 and FR62
    install 161AW
  • between the FR62 and FR63
    install 161BW
  • between the FR63 and FR65
    install 161CW
  • between the FR65 and FR70
    install 161DW (Ref. AMM TASK 25-55-12-400-001)
   (6) For the APU fuel line between FR46 and FR70.
     (a) Close the AFT cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
   (7) For the APU fuel line aft of FR70.
     (a) Set the light switch to off.
     (b) Close the applicable access panels for the APU fuel line:
   (8) Remove the WARNING NOTICE(S).
   (9) Remove the access platform(s).
   (10) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
Subtask 28-22-47-410-050-B ** ON A/C NOT FOR ALL
B. Close Access
   (1) If fuel fell on aircraft components or the structure, do the procedure for cleaning after a fuel leakage (Ref. AMM TASK 51-78-00-615-002).
   (2) Make sure that the work area is clean and clear of tools and other items.
   (3) For the APU fuel line between FR41 and FR42.
     (a) Install the floor panel 241HL (Ref. AMM TASK 53-32-12-400-002).
   (4) For the APU fuel line between FR42 and FR46.
     (a) Remove the ACCESS PLATFORM 1M(3 FT).
     (b) Close the LH main landing-gear door 734 (Ref. AMM TASK 32-12-00-410-001).
   (5) For the APU fuel line between FR46 and FR70.
     (a) Install the applicable access panels for the APU fuel line:
  • between the FR46 and FR47
    install 151BW
  • between the FR47 and FR47.4
    install 151RW
  • between the FR47.4 and FR49
    install 151CW
  • between the FR49 and FR52
    install 151DW
  • between the FR52 and FR55
    install 151EW
  • between the FR55 and FR58
    install 151HW
  • between the FR58 and FR59
    install 151JW
  • between the FR59 and FR62
    install 161AW
  • between the FR62 and FR63
    install 161BW
  • between the FR63 and FR65
    install 161CW
  • between the FR65 and FR70
    install 161DW (Ref. AMM TASK 25-55-12-400-001)
   (6) For the APU fuel line between FR46 and FR70.
     (a) Close the AFT cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
   (7) For the APU fuel line aft of FR70.
     (a) Set the light switch to off.
     (b) Close the applicable access panels for the APU fuel line:
   (8) Remove the WARNING NOTICE(S).
   (9) Remove the access platform(s).
   (10) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
Subtask 28-22-47-410-050-C ** ON A/C NOT FOR ALL
B. Close Access
   (1) If fuel fell on aircraft components or the structure, do the procedure for cleaning after a fuel leakage (Ref. AMM TASK 51-78-00-615-002).
   (2) Make sure that the work area is clean and clear of tools and other items.
   (3) For the APU fuel line between FR41 and FR42.
     (a) Install the floor panel 241HL (Ref. AMM TASK 53-32-12-400-002).
   (4) For the APU fuel line between FR42 and FR46.
     (a) Remove the ACCESS PLATFORM 1M(3 FT).
     (b) Close the LH main landing-gear door 734 (Ref. AMM TASK 32-12-00-410-001).
   (5) For the APU fuel line between FR46 and FR70.
     (a) Install the applicable access panels for the APU fuel line:
  • between the FR46 and FR47
    install 151BW
  • between the FR47 and FR53
    install 151SW
  • between the FR53 and FR56
    install 151TW
  • between the FR56 and FR58
    install 151UW
  • between the FR58 and FR59
    install 151VW
  • between the FR59 and FR62
    install 161AW
  • between the FR62 and FR63
    install 161BW
  • between the FR63 and FR65
    install 161CW
  • between the FR65 and FR70
    install 161DW (Ref. AMM TASK 25-55-12-400-001)
   (6) For the APU fuel line between FR46 and FR70.
     (a) Close the AFT cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
   (7) For the APU fuel line aft of FR70.
     (a) Set the light switch to off.
     (b) Close the applicable access panels for the APU fuel line:
   (8) Remove the WARNING NOTICE(S).
   (9) Remove the access platform(s).
   (10) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.02 06:17:32 UTC
"WTRUIB" 2025