DOC AIRBUS | AMM A320FInstallation of the Assembly of the APU Bleed Check-Valve
TASK 36-12-51-400-002-A
Installation of the Assembly of the APU Bleed Check-Valve
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 36-12-51-860-054-A ** ON A/C NOT FOR ALL
Subtask 36-12-51-420-055-A ** ON A/C NOT FOR ALL
Subtask 36-12-51-410-052-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:15:38 UTC
Installation of the Assembly of the APU Bleed Check-Valve
WARNING:
MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING:
ALWAYS USE APPLICABLE GLOVES TO TOUCH HOT PARTS. HOT PARTS CAN CAUSE INJURY TO PERSONS.
WARNING:
BE CAREFUL WHEN THE DUCTS ARE DISCONNECTED THE TEMPERATURE OF THE EXHAUST GASES FROM THE OPEN ENDS OF THE DISCONNECTED DUCTS CAN BE AS HIGH AS 270 DEG.C (518 DEG.F). THE HOT GASES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
CAUTION:
BE VERY CAREFUL WHEN YOU DO WORK ON OR NEAR THE AIR-CONDITIONING DUCTS. THE DUCTS ARE MADE OF THIN MATERIAL AND YOU CAN EASILY BREAK THEM.
CAUTION:
DO NOT PUT YOUR WEIGHT ON THE DUCTS. IT IS VERY EASY TO BREAK THEM.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03FAB1) | Mineral Oil base Grease-- Vaseline or Petrolatum - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 150 | AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT |
| 190 | BELLY FAIR, AIR CONDITIONING & HYD COMPT |
| 211 | COCKPIT |
| 151CW, 151SW, 197BB | |
| 151BW, 151RW, 197KB |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 22 | O-RING | AIPC 21-43-04-14-070 |
| 22 | O-RING | AIPC 21-43-84-16-030 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-33-21-618-001-A-02 | Pre-conditioning with the APU |
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 21-43-00-710-003-A | Operational Test of the AFT Cargo Compartment Heating System |
| TASK 21-43-52-400-001-A | Installation of the Pressure Regulating Valve - Aft Cargo-Compartment Heating |
| TASK 25-55-11-000-001-A | Removal of the Aft Cargo-Compartment Partition at FR47 |
| TASK 25-55-11-000-003-A | Removal of the Sidewall Panels in the Aft Cargo Compartment - FR47/FR59 |
| TASK 25-55-11-400-001-A | Installation of the Aft Cargo-Compartment Partition at FR47 |
| TASK 25-55-11-400-003-A | Installation of the Sidewall Panels in the Aft Cargo Compartment - FR47/FR59 |
| TASK 29-00-00-910-004-A | General Rules for Removal and Installation Procedures in the Hydraulic Systems |
| TASK 36-22-17-400-001-A | Installation of the APU Overheat Sensing-Elements |
| 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 53-35-13-000-002-A | Removal of the Quick-Release Access Panels from the Belly Fairing Structure |
| TASK 53-35-13-400-002-A | Installation of the Quick-Release Access Panels on the Belly Fairing Structure |
Assembly of the APU Bleed Check-ValveSubtask 36-12-51-860-054-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Make sure that a WARNING NOTICE(S) are in position:
(3) Make sure that access panel 197BB is removed (Ref. AMM TASK 53-35-13-000-002).
(4) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
(5) Make sure that the sidewall panel is removed:
(a) If installed, sidewall panel 151CW (Ref. AMM TASK 25-55-11-000-003), or
(b) If installed, sidewall panel 151SW (Ref. AMM TASK 25-55-11-000-003).
Subtask 36-12-51-860-054-C ** ON A/C NOT FOR ALL (1) Make sure that a WARNING NOTICE(S) are in position:
- in the cockpit on engine control-panel 115VU to tell persons not to start the engine(s)
- in the cockpit on the AIR COND overhead-control-panel 30VU to tell persons not to push in the APU BLEED pushbutton switch
- on the HP ground connector to tell persons not to pressurize the pneumatic system.
(3) Make sure that access panel 197BB is removed (Ref. AMM TASK 53-35-13-000-002).
(4) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
(5) Make sure that the sidewall panel is removed:
(a) If installed, sidewall panel 151CW (Ref. AMM TASK 25-55-11-000-003), or
(b) If installed, sidewall panel 151SW (Ref. AMM TASK 25-55-11-000-003).
A. Aircraft Maintenance Configuration
(1) Make sure that a WARNING NOTICE(S) are in position:
(3) Make sure that access panel 197KB is removed (Ref. AMM TASK 53-35-13-000-002).
(4) Make sure that aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
(5) In the aft cargo compartment:
(a) Make sure that sidewall panel 151RW is removed (Ref. AMM TASK 25-55-11-000-003).
(b) Make sure that partition panel 151BW is removed (Ref. AMM TASK 25-55-11-000-001).
Subtask 36-12-51-865-057-A (1) Make sure that a WARNING NOTICE(S) are in position:
- In the cockpit, on engine control-panel 115VU to tell persons not to start the engine(s)
- In the cockpit, on AIR COND overhead-control-panel 30VU to tell persons not to push (in) the APU BLEED pushbutton switch
- On the HP ground connector to tell persons not to pressurize the pneumatic system.
(3) Make sure that access panel 197KB is removed (Ref. AMM TASK 53-35-13-000-002).
(4) Make sure that aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
(5) In the aft cargo compartment:
(a) Make sure that sidewall panel 151RW is removed (Ref. AMM TASK 25-55-11-000-003).
(b) Make sure that partition panel 151BW is removed (Ref. AMM TASK 25-55-11-000-001).
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AIR BLEED/ENG 1/CTL | 3HA1 | D12 |
| 49VU | AIR BLEED/ENG 1/MONG | 2HA1 | D11 |
| ** ON A/C ALL | |||
| 49VU | AIR BLEED/X FEED/VALVE/BAT | 2HV | D13 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | AIR BLEED/ENG 2/MONG | 3HA2 | D12 |
| 49VU | AIR BLEED/ENG 1/CTL | 2HA1 | D11 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR BLEED/ENG 2/CTL | 3HA2 | Z23 |
| 122VU | AIR BLEED/ENG 2/MONG | 2HA2 | Z22 |
| ** ON A/C ALL | |||
| 122VU | AIR BLEED/X FEED VALVE/NORM | 1HV | Z20 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR BLEED/ENG 1/MONG | 3HA1 | Z23 |
| 122VU | AIR BLEED/ENG 2/CTL | 2HA2 | Z22 |
Subtask 36-12-51-420-055-A ** ON A/C NOT FOR ALL
A. Installation of the Assembly of the APU Bleed Check-Valve
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Install the seal (15).
(5) Put the APU bleed-check-valve assembly (14) in the installation position.
(6) Hold the APU bleed-check-valve assembly (14) and install the bolts (13), the washers (16) and the nuts (17).
(7) TORQUE the nuts (17) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.
(8) Install the clamp (12) on the bleed air duct (11):
(a) Do not tighten the clamp at this time.
(9) Carefully move the bleed air duct (11) to its correct installation position.
(10) Move the clamp (12) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (11).
(11) TORQUE the bolt of the clamp (12) to between 50 and 40 lbf.in (0.57 and 0.45 m.daN ).
(12) Install the clamp (18) on the bleed air duct (2):
(a) Do not tighten the clamp at this time.
(13) Carefully move the bleed air duct (2) to its correct installation position.
(14) Move the clamp (18) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (2).
(15) TORQUE the bolt of the clamp (18) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in ).
(16) Install the connecting rods (3) with the bolts (1), the washers (6) and the nuts (7) on the bleed air ducts (2) and (9).
(17) TORQUE the nuts (7) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(18) If necessary, adjust the bleed air ducts (9) and (2) with the connecting rods (3):
(a) Make sure that there is no tension on the bleed air ducts (9) and (2).
(19) Connect the bonding strap (8) to the bleed air duct (2) with the bolt (10), the washer (5) and the nut (4).
(20) TORQUE the nut (4) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in ).
(21) Install the clamp (23) on the bleed air duct (9).
(22) TORQUE the screw of the clamp (23) to between 3.1 and 2.5 m.N (27.43 and 22.12 lbf.in ).
(23) Install the washers (21) and the bolts (22) to the bracket (20).
(24) TORQUE the bolts (22) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(26) If the hydraulic pipe is removed, install it (Ref. AMM TASK 29-00-00-910-004).
(27) Do the electrical bonding procedure (Ref. AMM TASK 20-28-00-912-802).
Subtask 36-12-51-420-055-B ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Install the seal (15).
(5) Put the APU bleed-check-valve assembly (14) in the installation position.
(6) Hold the APU bleed-check-valve assembly (14) and install the bolts (13), the washers (16) and the nuts (17).
(7) TORQUE the nuts (17) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.(8) Install the clamp (12) on the bleed air duct (11):
(a) Do not tighten the clamp at this time.
(9) Carefully move the bleed air duct (11) to its correct installation position.
(10) Move the clamp (12) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (11).
(11) TORQUE the bolt of the clamp (12) to between 50 and 40 lbf.in (0.57 and 0.45 m.daN )
. (12) Install the clamp (18) on the bleed air duct (2):
(a) Do not tighten the clamp at this time.
(13) Carefully move the bleed air duct (2) to its correct installation position.
(14) Move the clamp (18) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (2).
(15) TORQUE the bolt of the clamp (18) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )
. (16) Install the connecting rods (3) with the bolts (1), the washers (6) and the nuts (7) on the bleed air ducts (2) and (9).
(17) TORQUE the nuts (7) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.(18) If necessary, adjust the bleed air ducts (9) and (2) with the connecting rods (3):
(a) Make sure that there is no tension on the bleed air ducts (9) and (2).
(19) Connect the bonding strap (8) to the bleed air duct (2) with the bolt (10), the washer (5) and the nut (4).
(20) TORQUE the nut (4) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
.(21) Install the clamp (23) on the bleed air duct (9).
(22) TORQUE the screw of the clamp (23) to between 3.1 and 2.5 m.N (27.43 and 22.12 lbf.in )
.(23) Install the washers (21) and the bolts (22) to the bracket (20).
(24) TORQUE the bolts (22) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.CAUTION:
REMOVE OR INSTALL THE SENSING ELEMENTS CAREFULLY. DO NOT TWIST, BEND OR CAUSE KINKS IN THE SENSING ELEMENTS. IF YOU DO, YOU CAN CAUSE DAMAGE TO THEM.
(25) Install the APU overheat sensing-elements (19) on the bleed air duct (2) (Ref. AMM TASK 36-22-17-400-001).(26) If the hydraulic pipe is removed, install it (Ref. AMM TASK 29-00-00-910-004).
(27) Do the electrical bonding procedure (Ref. AMM TASK 20-28-00-912-802).
A. Installation of the Assembly of the APU Bleed Check-Valve
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Install the seal (15).
(5) Put the APU bleed-check-valve assembly (14) in the installation position:
(a) If there is metallic noise in the APU bleed-check-valve assembly (14) installed in its vertical position, you can turn it 90 deg (90 deg) to its horizontal position.
(6) Hold the APU bleed-check-valve assembly (14) and install the bolts (13), the washers (16) and the nuts (17).
(7) TORQUE the nuts (17) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(8) Install the clamp (12) on the bleed air duct (11):
(a) Do not tighten the clamp at this time.
(9) Carefully move the bleed air duct (11) to its correct installation position.
(10) Move the clamp (12) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (11).
(11) TORQUE the bolt of the clamp (12) to between 50 and 40 lbf.in (0.57 and 0.45 m.daN ).
(12) Install the clamp (18) on the bleed air duct (2):
(a) Do not tighten the clamp at this time.
(13) Carefully move the bleed air duct (2) to its correct installation position.
(14) Move the clamp (18) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (2).
(15) TORQUE the bolt of the clamp (18) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in ).
(16) Install the connecting rods (3) with the bolts (1), the washers (6) and the nuts (7) on the bleed air ducts (2) and (9).
(17) TORQUE the nuts (7) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(18) If necessary, adjust the bleed air ducts (9) and (2) with the connecting rods (3):
(a) Make sure that there is no tension on the bleed air ducts (9) and (2).
(19) Connect the bonding strap (8) to the bleed air duct (2) with the bolt (10), the washer (5) and the nut (4).
(20) TORQUE the nut (4) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in ).
(21) Install the clamp (23) on the bleed air duct (9).
(22) TORQUE the screw of the clamp (23) to between 3.1 and 2.5 m.N (27.43 and 22.12 lbf.in ).
(23) Install the washers (21) and the bolts (22) to the bracket (20).
(24) TORQUE the bolts (22) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(26) If the hydraulic pipe is removed, install it (Ref. AMM TASK 29-00-00-910-004).
(27) Do the electrical bonding procedure (Ref. AMM TASK 20-28-00-912-802).
Subtask 36-12-51-420-055-D ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Install the seal (15).
(5) Put the APU bleed-check-valve assembly (14) in the installation position:
(a) If there is metallic noise in the APU bleed-check-valve assembly (14) installed in its vertical position, you can turn it 90 deg (90 deg) to its horizontal position.
(6) Hold the APU bleed-check-valve assembly (14) and install the bolts (13), the washers (16) and the nuts (17).
(7) TORQUE the nuts (17) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.(8) Install the clamp (12) on the bleed air duct (11):
(a) Do not tighten the clamp at this time.
(9) Carefully move the bleed air duct (11) to its correct installation position.
(10) Move the clamp (12) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (11).
(11) TORQUE the bolt of the clamp (12) to between 50 and 40 lbf.in (0.57 and 0.45 m.daN )
. (12) Install the clamp (18) on the bleed air duct (2):
(a) Do not tighten the clamp at this time.
(13) Carefully move the bleed air duct (2) to its correct installation position.
(14) Move the clamp (18) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (2).
(15) TORQUE the bolt of the clamp (18) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )
. (16) Install the connecting rods (3) with the bolts (1), the washers (6) and the nuts (7) on the bleed air ducts (2) and (9).
(17) TORQUE the nuts (7) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.(18) If necessary, adjust the bleed air ducts (9) and (2) with the connecting rods (3):
(a) Make sure that there is no tension on the bleed air ducts (9) and (2).
(19) Connect the bonding strap (8) to the bleed air duct (2) with the bolt (10), the washer (5) and the nut (4).
(20) TORQUE the nut (4) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
.(21) Install the clamp (23) on the bleed air duct (9).
(22) TORQUE the screw of the clamp (23) to between 3.1 and 2.5 m.N (27.43 and 22.12 lbf.in )
.(23) Install the washers (21) and the bolts (22) to the bracket (20).
(24) TORQUE the bolts (22) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.CAUTION:
REMOVE OR INSTALL THE SENSING ELEMENTS CAREFULLY. DO NOT TWIST, BEND OR CAUSE KINKS IN THE SENSING ELEMENTS. IF YOU DO, YOU CAN CAUSE DAMAGE TO THEM.
(25) Install the APU overheat sensing-elements (19) on the bleed air duct (2) (Ref. AMM TASK 36-22-17-400-001).(26) If the hydraulic pipe is removed, install it (Ref. AMM TASK 29-00-00-910-004).
(27) Do the electrical bonding procedure (Ref. AMM TASK 20-28-00-912-802).
A. Installation of the Assembly of the APU Bleed Check-Valve
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Install the seal (15).
(5) Put the APU bleed-check-valve assembly (14) in the installation position.
(6) Hold the APU bleed-check-valve assembly (14) and install the bolts (13), the washers (16) and the nuts (17).
(7) TORQUE the nuts (17) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(8) Install the clamp (12) on the bleed air duct (11):
(a) Do not tighten the clamp at this time.
(9) Carefully move the bleed air duct (11) to its correct installation position.
(10) Move the clamp (12) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (11).
(11) TORQUE the bolt of the clamp (12) to between 50 and 40 lbf.in (0.57 and 0.45 m.daN ).
(12) Install the clamp (18) on the bleed air duct (2):
(a) Do not tighten the clamp at this time.
(13) Carefully move the bleed air duct (2) to its correct installation position.
(14) Move the clamp (18) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (2).
(15) TORQUE the bolt of the clamp (18) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in ).
(16) Install the connecting rods (3) with the bolts (1), the washers (6) and the nuts (7) on the bleed air ducts (2) and (9).
(17) TORQUE the nuts (7) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(18) If necessary, adjust the bleed air ducts (9) and (2) with the connecting rods (3):
(a) Make sure that there is no tension on the bleed air ducts (9) and (2).
(19) Connect the bonding strap (8) to the bleed air duct (2) with the bolt (10), the washer (5) and the nut (4).
(20) TORQUE the nut (4) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in ).
(21) Install the clamp (26) on the bleed air duct (9).
(22) TORQUE the screw of the clamp (26) to between 3.1 and 2.5 m.N (27.43 and 22.12 lbf.in ).
(23) If the Pressure Regulating Valve (PRV) (20) is removed, install it (Ref. AMM TASK 21-43-52-400-001).
(24) Lubricate the new AIPC 21-43-04-14-070 O-RING (22) or AIPC 21-43-84-16-030 O-RING (22) with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
(25) Install the new O-ring (22) in position on the bleed air duct (2).
(26) Install the clamp (21) on the bleed air duct (2).
(27) Connect the bleed air duct (2) to the PRV (20).
(28) Move the clamp (21) to its correct installation position on the PRV (20) and the bleed air duct (2).
(29) TORQUE the bolt of the clamp (21) to between 0.57 and 0.51 m.daN (50.44 and 45.13 lbf.in ).
(30) Install the washers (24) and the bolts (25) to the bracket (23).
(31) TORQUE the bolts (25) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(33) If the hydraulic pipe is removed, install it (Ref. AMM TASK 29-00-00-910-004).
(34) Do the electrical bonding procedure (Ref. AMM TASK 20-28-00-912-802).
Subtask 36-12-51-420-055-F ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Install the seal (15).
(5) Put the APU bleed-check-valve assembly (14) in the installation position.
(6) Hold the APU bleed-check-valve assembly (14) and install the bolts (13), the washers (16) and the nuts (17).
(7) TORQUE the nuts (17) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.(8) Install the clamp (12) on the bleed air duct (11):
(a) Do not tighten the clamp at this time.
(9) Carefully move the bleed air duct (11) to its correct installation position.
(10) Move the clamp (12) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (11).
(11) TORQUE the bolt of the clamp (12) to between 50 and 40 lbf.in (0.57 and 0.45 m.daN )
. (12) Install the clamp (18) on the bleed air duct (2):
(a) Do not tighten the clamp at this time.
(13) Carefully move the bleed air duct (2) to its correct installation position.
(14) Move the clamp (18) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (2).
(15) TORQUE the bolt of the clamp (18) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )
. (16) Install the connecting rods (3) with the bolts (1), the washers (6) and the nuts (7) on the bleed air ducts (2) and (9).
(17) TORQUE the nuts (7) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.(18) If necessary, adjust the bleed air ducts (9) and (2) with the connecting rods (3):
(a) Make sure that there is no tension on the bleed air ducts (9) and (2).
(19) Connect the bonding strap (8) to the bleed air duct (2) with the bolt (10), the washer (5) and the nut (4).
(20) TORQUE the nut (4) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
.(21) Install the clamp (26) on the bleed air duct (9).
(22) TORQUE the screw of the clamp (26) to between 3.1 and 2.5 m.N (27.43 and 22.12 lbf.in )
.(23) If the Pressure Regulating Valve (PRV) (20) is removed, install it (Ref. AMM TASK 21-43-52-400-001).
(24) Lubricate the new AIPC 21-43-04-14-070 O-RING (22) or AIPC 21-43-84-16-030 O-RING (22) with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
(25) Install the new O-ring (22) in position on the bleed air duct (2).
(26) Install the clamp (21) on the bleed air duct (2).
(27) Connect the bleed air duct (2) to the PRV (20).
(28) Move the clamp (21) to its correct installation position on the PRV (20) and the bleed air duct (2).
(29) TORQUE the bolt of the clamp (21) to between 0.57 and 0.51 m.daN (50.44 and 45.13 lbf.in )
. (30) Install the washers (24) and the bolts (25) to the bracket (23).
(31) TORQUE the bolts (25) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.CAUTION:
REMOVE OR INSTALL THE SENSING ELEMENTS CAREFULLY. DO NOT TWIST, BEND OR CAUSE KINKS IN THE SENSING ELEMENTS. IF YOU DO, YOU CAN CAUSE DAMAGE TO THEM.
(32) Install the APU overheat sensing-elements (19) on the bleed air duct (2) (Ref. AMM TASK 36-22-17-400-001).(33) If the hydraulic pipe is removed, install it (Ref. AMM TASK 29-00-00-910-004).
(34) Do the electrical bonding procedure (Ref. AMM TASK 20-28-00-912-802).
A. Installation of the Assembly of the APU Bleed Check-Valve
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Install the seal (15).
(5) Put the APU bleed-check-valve assembly (14) in the installation position:
(a) If there is metallic noise in the APU bleed-check-valve assembly (14) installed in its vertical position, you can turn it 90 deg (90 deg) to its horizontal position.
(6) Hold the APU bleed-check-valve assembly (14) and install the bolts (13), the washers (16) and the nuts (17).
(7) TORQUE the nuts (17) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(8) Install the clamp (12) on the bleed air duct (11):
(a) Do not tighten the clamp at this time.
(9) Carefully move the bleed air duct (11) to its correct installation position.
(10) Move the clamp (12) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (11).
(11) TORQUE the bolt of the clamp (12) to between 50 and 40 lbf.in (0.57 and 0.45 m.daN ).
(12) Install the clamp (18) on the bleed air duct (2):
(a) Do not tighten the clamp at this time.
(13) Carefully move the bleed air duct (2) to its correct installation position.
(14) Move the clamp (18) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (2).
(15) TORQUE the bolt of the clamp (18) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in ).
(16) Install the connecting rods (3) with the bolts (1), the washers (6) and the nuts (7) on the bleed air ducts (2) and (9).
(17) TORQUE the nuts (7) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(18) If necessary, adjust the bleed air ducts (9) and (2) with the connecting rods (3):
(a) Make sure that there is no tension on the bleed air ducts (9) and (2).
(19) Connect the bonding strap (8) to the bleed air duct (2) with the bolt (10), the washer (5) and the nut (4).
(20) TORQUE the nut (4) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in ).
(21) Install the clamp (26) on the bleed air duct (9).
(22) TORQUE the screw of the clamp (26) to between 3.1 and 2.5 m.N (27.43 and 22.12 lbf.in ).
(23) If the Pressure Regulating Valve (PRV) (20) is removed, install it (Ref. AMM TASK 21-43-52-400-001).
(24) Lubricate the new AIPC 21-43-04-14-070 O-RING (22) or AIPC 21-43-84-16-030 O-RING (22) with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
(25) Install the new O-ring (22) in position on the bleed air duct (2).
(26) Install the clamp (21) on the bleed air duct (2).
(27) Connect the bleed air duct (2) to the PRV (20).
(28) Move the clamp (21) to its correct installation position on the PRV (20) and the bleed air duct (2).
(29) TORQUE the bolt of the clamp (21) to between 0.57 and 0.51 m.daN (50.44 and 45.13 lbf.in ).
(30) Install the washers (24) and the bolts (25) to the bracket (23).
(31) TORQUE the bolts (25) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(33) If the hydraulic pipe is removed, install it (Ref. AMM TASK 29-00-00-910-004).
(34) Do the electrical bonding procedure (Ref. AMM TASK 20-28-00-912-802).
Subtask 36-12-51-865-058-A (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Install the seal (15).
(5) Put the APU bleed-check-valve assembly (14) in the installation position:
(a) If there is metallic noise in the APU bleed-check-valve assembly (14) installed in its vertical position, you can turn it 90 deg (90 deg) to its horizontal position.
(6) Hold the APU bleed-check-valve assembly (14) and install the bolts (13), the washers (16) and the nuts (17).
(7) TORQUE the nuts (17) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.(8) Install the clamp (12) on the bleed air duct (11):
(a) Do not tighten the clamp at this time.
(9) Carefully move the bleed air duct (11) to its correct installation position.
(10) Move the clamp (12) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (11).
(11) TORQUE the bolt of the clamp (12) to between 50 and 40 lbf.in (0.57 and 0.45 m.daN )
. (12) Install the clamp (18) on the bleed air duct (2):
(a) Do not tighten the clamp at this time.
(13) Carefully move the bleed air duct (2) to its correct installation position.
(14) Move the clamp (18) to its correct installation position on the APU bleed-check-valve assembly (14) and the bleed air duct (2).
(15) TORQUE the bolt of the clamp (18) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )
. (16) Install the connecting rods (3) with the bolts (1), the washers (6) and the nuts (7) on the bleed air ducts (2) and (9).
(17) TORQUE the nuts (7) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.(18) If necessary, adjust the bleed air ducts (9) and (2) with the connecting rods (3):
(a) Make sure that there is no tension on the bleed air ducts (9) and (2).
(19) Connect the bonding strap (8) to the bleed air duct (2) with the bolt (10), the washer (5) and the nut (4).
(20) TORQUE the nut (4) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
.(21) Install the clamp (26) on the bleed air duct (9).
(22) TORQUE the screw of the clamp (26) to between 3.1 and 2.5 m.N (27.43 and 22.12 lbf.in )
.(23) If the Pressure Regulating Valve (PRV) (20) is removed, install it (Ref. AMM TASK 21-43-52-400-001).
(24) Lubricate the new AIPC 21-43-04-14-070 O-RING (22) or AIPC 21-43-84-16-030 O-RING (22) with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
(25) Install the new O-ring (22) in position on the bleed air duct (2).
(26) Install the clamp (21) on the bleed air duct (2).
(27) Connect the bleed air duct (2) to the PRV (20).
(28) Move the clamp (21) to its correct installation position on the PRV (20) and the bleed air duct (2).
(29) TORQUE the bolt of the clamp (21) to between 0.57 and 0.51 m.daN (50.44 and 45.13 lbf.in )
. (30) Install the washers (24) and the bolts (25) to the bracket (23).
(31) TORQUE the bolts (25) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
.CAUTION:
REMOVE OR INSTALL THE SENSING ELEMENTS CAREFULLY. DO NOT TWIST, BEND OR CAUSE KINKS IN THE SENSING ELEMENTS. IF YOU DO, YOU CAN CAUSE DAMAGE TO THEM.
(32) Install the APU overheat sensing-elements (19) on the bleed air duct (2) (Ref. AMM TASK 36-22-17-400-001).(33) If the hydraulic pipe is removed, install it (Ref. AMM TASK 29-00-00-910-004).
(34) Do the electrical bonding procedure (Ref. AMM TASK 20-28-00-912-802).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 36-12-51-790-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AIR BLEED/ENG 1/CTL | 3HA1 | D12 |
| 49VU | AIR BLEED/ENG 1/MONG | 2HA1 | D11 |
| ** ON A/C ALL | |||
| 49VU | AIR BLEED/X FEED/VALVE/BAT | 2HV | D13 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | AIR BLEED/ENG 2/MONG | 3HA2 | D12 |
| 49VU | AIR BLEED/ENG 1/CTL | 2HA1 | D11 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR BLEED/ENG 2/CTL | 3HA2 | Z23 |
| 122VU | AIR BLEED/ENG 2/MONG | 2HA2 | Z22 |
| ** ON A/C ALL | |||
| 122VU | AIR BLEED/X FEED VALVE/NORM | 1HV | Z20 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR BLEED/ENG 1/MONG | 3HA1 | Z23 |
| 122VU | AIR BLEED/ENG 2/CTL | 2HA2 | Z22 |
C. Leak Test of the Pneumatic Connections
(1) Do the ground air pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001).
(2) Make sure that there are no leaks between:
(a) The APU bleed-check-valve assembly (14) and the bleed air duct (2).
(b) The APU bleed-check-valve assembly (14) and the bleed air duct (11).
Subtask 36-12-51-790-050-C ** ON A/C NOT FOR ALL (1) Do the ground air pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001).
(2) Make sure that there are no leaks between:
(a) The APU bleed-check-valve assembly (14) and the bleed air duct (2).
(b) The APU bleed-check-valve assembly (14) and the bleed air duct (11).
C. Leak test
(1) Do the ground air pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001).
(2) Make sure that there is no leak between:
(a) The APU bleed-check-valve assembly (14) and the bleed air duct (2).
(b) The APU bleed-check-valve assembly (14) and the bleed air duct (11).
(c) The bleed air duct (2) and the PRV (20).
(3) After a minimum of 15 minutes, stop the pre-conditioning (Ref. AMM TASK 12-33-21-618-001).
(4) Do the operation test of the AFT-cargo-compartment heating system (Ref. AMM TASK 21-43-00-710-003).
5. Close-up(1) Do the ground air pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001).
(2) Make sure that there is no leak between:
(a) The APU bleed-check-valve assembly (14) and the bleed air duct (2).
(b) The APU bleed-check-valve assembly (14) and the bleed air duct (11).
(c) The bleed air duct (2) and the PRV (20).
(3) After a minimum of 15 minutes, stop the pre-conditioning (Ref. AMM TASK 12-33-21-618-001).
(4) Do the operation test of the AFT-cargo-compartment heating system (Ref. AMM TASK 21-43-00-710-003).
Subtask 36-12-51-410-052-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panel 197BB (Ref. AMM TASK 53-35-13-400-002).
(3) In the aft cargo compartment, install the sidewall panel:
(a) If removed, install sidewall panel 151CW (Ref. AMM TASK 25-55-11-400-003), or
(b) If removed, install sidewall panel 151SW (Ref. AMM TASK 25-55-11-400-003).
(4) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
Subtask 36-12-51-410-052-C ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panel 197BB (Ref. AMM TASK 53-35-13-400-002).
(3) In the aft cargo compartment, install the sidewall panel:
(a) If removed, install sidewall panel 151CW (Ref. AMM TASK 25-55-11-400-003), or
(b) If removed, install sidewall panel 151SW (Ref. AMM TASK 25-55-11-400-003).
(4) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panel 197KB (Ref. AMM TASK 53-35-13-400-002).
(3) In the aft cargo compartment:
(a) Install sidewall panel 151RW (Ref. AMM TASK 25-55-11-400-003).
(b) Install partition panel 151BW (Ref. AMM TASK 25-55-11-400-001).
(4) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
Subtask 36-12-51-942-055-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panel 197KB (Ref. AMM TASK 53-35-13-400-002).
(3) In the aft cargo compartment:
(a) Install sidewall panel 151RW (Ref. AMM TASK 25-55-11-400-003).
(b) Install partition panel 151BW (Ref. AMM TASK 25-55-11-400-001).
(4) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
B. Put the aircraft back to the serviceable condition.
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).