DOC AIRBUS | AMM A320FInstallation of the Transient Bleed Valve [CFMB]
TASK 75-26-10-400-001-A
Installation of the Transient Bleed Valve
1. Reason for the Job
This task is applicable for /P, /3 and /3 PIP engines.
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 75-26-10-860-050-A ** ON A/C NOT FOR ALL
Subtask 75-26-10-420-050-A ** ON A/C NOT FOR ALL
Subtask 75-26-10-410-052-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:10:22 UTC
Installation of the Transient Bleed Valve
1. Reason for the Job
This task is applicable for /P, /3 and /3 PIP engines.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2101) | graphite grease |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 461AL, 462AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 170 | SEAL | AIPC 73-11-40-19-020 |
| 160 | SEAL | AIPC 73-11-40-19-070 |
| 160 | SEAL | AIPC 73-11-40-19-080 |
| 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 71-00-00-710-006-B | Minimum Idle 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 |
| TASK 73-29-00-710-040-B | Operational Test of the FADEC on the Ground (with Engine Motoring) |
| TASK 73-29-00-710-040-B-02 | Operational Test of the FADEC on the Ground (with Engine Non motoring) |
| TASK 78-30-00-081-041-B | Make the Thrust Reverser Serviceable after Maintenance |
| TASK 78-30-00-481-041-B | Make the Thrust Reverser Unserviceable for Maintenance |
| TASK 78-36-00-010-040-B | Opening of the Thrust Reverser Doors |
| TASK 78-36-00-410-040-B | Closing of the Thrust Reverser Doors |
Transient Bleed Valve - Removal/InstallationSubtask 75-26-10-860-050-A ** ON A/C NOT FOR ALL
A. 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) On the overhead panel 20VU, make sure that the ENG1(2) FIRE pushbutton switch is released.
(4) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
Subtask 75-26-10-010-052-A ** ON A/C NOT FOR ALL (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) On the overhead panel 20VU, make sure that the ENG1(2) FIRE pushbutton switch is released.
(4) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
B. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open: (Ref. AMM TASK 78-36-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 75-26-10-040-051-A ** ON A/C NOT FOR ALL 4. Procedure(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open: (Ref. AMM TASK 78-36-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 75-26-10-420-050-A ** ON A/C NOT FOR ALL
A. Install the Transient Bleed Valve (TBV).
PRE CFM SB 72-0255
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the protective caps from the fuel inlet and drain ports of the TBV and from the air inlet and outlet ports of the TBV.
(4) Lubricate the threads of the bolts (60) with graphite grease (Material No.CP2101) .
(5) Put the TBV (10) in position on the forward bracket so that the three mounting holes align with the three mounting holes on the forward bracket.
(6) Loosely install the bolts (60) with your hands to put the TBV (10) in position on the TBV forward bracket.
(7) Lubricate the threads of the bolts (80) with graphite grease (Material No.CP2101) .
(8) Install the bolts (80) that attach the TBV (10) to the bracket (70) on the core engine.
(9) TORQUE the bolts (80) to between 68 and 62 lbf.in (0.77 and 0.70 m.daN )
.
(10) TORQUE the bolts (60) to between 68 and 62 lbf.in (0.77 and 0.70 m.daN ).
(11) Install the fuel manifolds as follows:
(a) Remove the protective caps on the outlet of the fuel manifold (40).
(b) Position the fuel manifold (40) to the forward face of the TBV (10).
(c) Lubricate the threads of the four bolts (25) and (26) with graphite grease (Material No.CP2101) .
(d) Install the seal gasket (50) between the pad of the fuel manifold (40) and the forward face of the TBV (10).
(e) Align the CJ13 harness bracket (31) over the holes of the fuel manifold (40).
(f) Install the four bolts (25) and (26) and tighten by hand on the holes which attach the fuel manifold (40) and gasket (50) to the TBV (10).
(g) TORQUE the bolts (25) and (26) to between 68 and 62 lbf.in (0.77 and 0.70 m.daN ).
(12) Install the TBV air inlet and air outlet tubes as follows:
(a) Remove the protective caps from the TBV air inlet and air outlet tubes (3) and (2).
(b) Install the new AIPC 73-11-40-19-070 SEAL (160) between the TBV air inlet tube (3) and the inlet port of the TBV (10).
(c) Install and tighten the V retainer coupling (100) that attaches the TBV air inlet tube (3) to the inlet port of the TBV (10).
(d) Install the new AIPC 73-11-40-19-020 SEAL (170) between the TBV air outlet tube (2) and the outlet port of the TBV (10).
(e) Install and tighten the V retainer coupling (110) that attaches the TBV air outlet tube (2) to the outlet port of the TBV (10).
(13) Install the electrical connectors as follows:
(a) Remove the blanking caps from the electrical connectors (130) and (140) and from the electrical connectors on the TBV (10).
(b) Connect the electrical connectors (130) and (140) to the electrical connectors on the TBV (10). Tighten the connectors with your hand plus one-eighth of a turn. If necessary, use the PLIERS - JAWED, SOFT.
END PRE CFM SB 72-0255
Subtask 75-26-10-420-051-A ** ON A/C NOT FOR ALL PRE CFM SB 72-0255
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the protective caps from the fuel inlet and drain ports of the TBV and from the air inlet and outlet ports of the TBV.
(4) Lubricate the threads of the bolts (60) with graphite grease (Material No.CP2101) .
(5) Put the TBV (10) in position on the forward bracket so that the three mounting holes align with the three mounting holes on the forward bracket.
(6) Loosely install the bolts (60) with your hands to put the TBV (10) in position on the TBV forward bracket.
(7) Lubricate the threads of the bolts (80) with graphite grease (Material No.CP2101) .
(8) Install the bolts (80) that attach the TBV (10) to the bracket (70) on the core engine.
(9) TORQUE the bolts (80) to between 68 and 62 lbf.in (0.77 and 0.70 m.daN )
. (10) TORQUE the bolts (60) to between 68 and 62 lbf.in (0.77 and 0.70 m.daN )
. (11) Install the fuel manifolds as follows:
(a) Remove the protective caps on the outlet of the fuel manifold (40).
(b) Position the fuel manifold (40) to the forward face of the TBV (10).
(c) Lubricate the threads of the four bolts (25) and (26) with graphite grease (Material No.CP2101) .
(d) Install the seal gasket (50) between the pad of the fuel manifold (40) and the forward face of the TBV (10).
(e) Align the CJ13 harness bracket (31) over the holes of the fuel manifold (40).
(f) Install the four bolts (25) and (26) and tighten by hand on the holes which attach the fuel manifold (40) and gasket (50) to the TBV (10).
(g) TORQUE the bolts (25) and (26) to between 68 and 62 lbf.in (0.77 and 0.70 m.daN )
. (12) Install the TBV air inlet and air outlet tubes as follows:
(a) Remove the protective caps from the TBV air inlet and air outlet tubes (3) and (2).
(b) Install the new AIPC 73-11-40-19-070 SEAL (160) between the TBV air inlet tube (3) and the inlet port of the TBV (10).
(c) Install and tighten the V retainer coupling (100) that attaches the TBV air inlet tube (3) to the inlet port of the TBV (10).
(d) Install the new AIPC 73-11-40-19-020 SEAL (170) between the TBV air outlet tube (2) and the outlet port of the TBV (10).
(e) Install and tighten the V retainer coupling (110) that attaches the TBV air outlet tube (2) to the outlet port of the TBV (10).
(13) Install the electrical connectors as follows:
(a) Remove the blanking caps from the electrical connectors (130) and (140) and from the electrical connectors on the TBV (10).
(b) Connect the electrical connectors (130) and (140) to the electrical connectors on the TBV (10). Tighten the connectors with your hand plus one-eighth of a turn. If necessary, use the PLIERS - JAWED, SOFT.
END PRE CFM SB 72-0255
B. Install the Transient Bleed Valve (TBV).
POST CFM SB 72-0255
(1) Clean and examine the component interface and/or the adjacent area of the transient bleed valve.
(2) Remove the protective caps from the fuel inlet and drain ports of the TBV and from the air inlet and outlet ports of the TBV.
(3) Apply graphite grease (Material No.CP2101) to the threads of the bolts (60).
(4) Align the TBV (10) on the forward bracket to make the three mounting holes align with the three mounting holes on the forward bracket.
(5) Install the bolts (60) that attach the TBV (10) to the forward bracket on the core engine. TORQUE the bolts to between 70 and 60 lbf.in (0.79 and 0.68 m.daN ).
(6) Apply graphite grease (Material No.CP2101) to the threads of the bolts (80).
(7) Install the bolts (80) that attach the TBV (10) to the transient bleed-valve bracket (70) on the core engine. TORQUE the bolts to between 70 and 60 lbf.in (0.79 and 0.68 m.daN ).
(8) Install the fuel transient bleed-valve manifold.
(a) Remove the protective caps from the outlet of the fuel transient bleed valve manifold (40).
(b) Align the fuel manifold (40) with the forward face of the TBV (10).
(c) Apply graphite grease (Material No.CP2101) to the threads of the bolts (25) and (26).
(d) Install the seal gasket (50) between the pad of the fuel manifold (40) and the forward face of the TBV (10).
(e) Align the CJ13 harness bracket (31) over the holes of the fuel manifold (40).
(f) Install the four bolts (25) and (26) and tighten by hand on the holes which attach the fuel manifold (40) and gasket (50) to the TBV (10).
(g) TORQUE the bolts (25) and (26) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN ).
(9) Install the air transient bleed valve inlet tube.
(a) Apply graphite grease (Material No.CP2101) to the threads and friction surface of the V retainer coupling (100).
(b) Install the new AIPC 73-11-40-19-080 SEAL (160) between the inlet tube (3) and the inlet port of the TBV (10).
(c) Install and tighten the V retainer coupling (100). TORQUE the V retainer coupling to between 70 and 60 lbf.in (0.79 and 0.68 m.daN ).
(10) Install the air transient bleed valve air outlet tube.
(a) Apply graphite grease (Material No.CP2101) to the threads and friction surface of the V retainer coupling (110).
(b) Install the new AIPC 73-11-40-19-020 SEAL (170) between the air outlet tube (2) and the outlet port of the TBV (10).
(c) Install and tighten the V retainer coupling (110). TORQUE the V retainer coupling to between 70 and 60 lbf.in (0.79 and 0.68 m.daN ).
(11) Install the electrical connectors as follows:
(a) Remove the blanking caps from the electrical connectors (130) and (140) and from the electrical connectors on the TBV (10).
(b) Connect the electrical connectors (130) and (140) to the electrical connectors on the TBV (10). Tighten the connectors with your hand plus one-eighth of a turn.
END POST CFM SB 72-0255
5. Close-upPOST CFM SB 72-0255
(1) Clean and examine the component interface and/or the adjacent area of the transient bleed valve.
(2) Remove the protective caps from the fuel inlet and drain ports of the TBV and from the air inlet and outlet ports of the TBV.
(3) Apply graphite grease (Material No.CP2101) to the threads of the bolts (60).
(4) Align the TBV (10) on the forward bracket to make the three mounting holes align with the three mounting holes on the forward bracket.
(5) Install the bolts (60) that attach the TBV (10) to the forward bracket on the core engine. TORQUE the bolts to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )
. (6) Apply graphite grease (Material No.CP2101) to the threads of the bolts (80).
(7) Install the bolts (80) that attach the TBV (10) to the transient bleed-valve bracket (70) on the core engine. TORQUE the bolts to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )
. (8) Install the fuel transient bleed-valve manifold.
(a) Remove the protective caps from the outlet of the fuel transient bleed valve manifold (40).
(b) Align the fuel manifold (40) with the forward face of the TBV (10).
(c) Apply graphite grease (Material No.CP2101) to the threads of the bolts (25) and (26).
(d) Install the seal gasket (50) between the pad of the fuel manifold (40) and the forward face of the TBV (10).
(e) Align the CJ13 harness bracket (31) over the holes of the fuel manifold (40).
(f) Install the four bolts (25) and (26) and tighten by hand on the holes which attach the fuel manifold (40) and gasket (50) to the TBV (10).
(g) TORQUE the bolts (25) and (26) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )
. (9) Install the air transient bleed valve inlet tube.
(a) Apply graphite grease (Material No.CP2101) to the threads and friction surface of the V retainer coupling (100).
(b) Install the new AIPC 73-11-40-19-080 SEAL (160) between the inlet tube (3) and the inlet port of the TBV (10).
(c) Install and tighten the V retainer coupling (100). TORQUE the V retainer coupling to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )
. (10) Install the air transient bleed valve air outlet tube.
(a) Apply graphite grease (Material No.CP2101) to the threads and friction surface of the V retainer coupling (110).
(b) Install the new AIPC 73-11-40-19-020 SEAL (170) between the air outlet tube (2) and the outlet port of the TBV (10).
(c) Install and tighten the V retainer coupling (110). TORQUE the V retainer coupling to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )
. (11) Install the electrical connectors as follows:
(a) Remove the blanking caps from the electrical connectors (130) and (140) and from the electrical connectors on the TBV (10).
(b) Connect the electrical connectors (130) and (140) to the electrical connectors on the TBV (10). Tighten the connectors with your hand plus one-eighth of a turn.
END POST CFM SB 72-0255
Subtask 75-26-10-410-052-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) Close the thrust reverser doors (Ref. AMM TASK 78-36-00-410-040).
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 75-26-10-440-051-A ** ON A/C NOT FOR ALL Subtask 75-26-10-860-052-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors (Ref. AMM TASK 78-36-00-410-040).
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
C. On the overhead panel 20VU, push the ENG1(2) FIRE pushbutton switch.
Lower the guard on the pushbutton switch.
Subtask 75-26-10-865-053-A ** ON A/C NOT FOR ALL Lower the guard on the pushbutton switch.
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 75-26-10-710-051-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FUEL/LP VALVE/MOT1/ENG2 | 2QG | A09 |
| 49VU | FUEL/LP VALVE/MOT1/ENG1 | 1QG | A08 |
E. Do a test of the TBV.
(1) Do an operational test of the FADEC on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040).
(2) Do a minimum idle leak check (Ref. AMM TASK 71-00-00-710-006).
Subtask 75-26-10-410-051-A ** ON A/C NOT FOR ALL (1) Do an operational test of the FADEC on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040).
(2) Do a minimum idle leak check (Ref. AMM TASK 71-00-00-710-006).
F. Close Access
(1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
Subtask 75-26-10-862-050-A ** ON A/C NOT FOR ALL (1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).