DOC AIRBUS | AMM A320FInstallation of the Burner Selection Valve (BSV) for DAC Engines [CFMB]
TASK 73-11-70-400-002-A-01
Installation of the Burner Selection Valve (BSV) for DAC Engines
1. Reason for the Job
This TASK is applicable for DAC Engines.
This task is only applicable for engines that have the burner selection valve (BSV) system installed (CFM56-5B SB 73-0112 and CFM56-5B SB 73-0114). Service Bulletins deleted the BSV system.
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 73-11-70-860-054-A ** ON A/C NOT FOR ALL
Subtask 73-11-70-420-056-A ** ON A/C NOT FOR ALL
Subtask 73-11-70-410-058-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:58:17 UTC
Installation of the Burner Selection Valve (BSV) for DAC Engines
1. Reason for the Job
This TASK is applicable for DAC Engines.
This task is only applicable for engines that have the burner selection valve (BSV) system installed (CFM56-5B SB 73-0112 and CFM56-5B SB 73-0114). Service Bulletins deleted the BSV system.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2101) | graphite grease |
| (Material No.CP2854) | vaseline |
| 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 | GASKET | AIPC 73-11-70-01-040 |
| 110 | GASKET | AIPC 73-11-70-01-050 |
| 100 | GASKET | AIPC 73-11-70-01-060 |
| 250 | GASKET | AIPC 73-11-70-01-070 |
| 130 | O-RING | AIPC 73-11-70-01-090 |
| REFERENCE | DESIGNATION |
|---|---|
| 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 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 |
Removal/Installation of the Burner Selection Valve (BSV) Pre SB CFM56-5B 72-181Subtask 73-11-70-860-054-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) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
Subtask 73-11-70-010-064-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) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE 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 73-11-70-040-059-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 73-11-70-420-056-A ** ON A/C NOT FOR ALL
A. Installation of the Burner Selection Valve (BSV)
(1) Remove the protective plug from the drain port of the BSV.
(2) Install a AIPC 73-11-70-01-090 O-RING (130) lubricated with vaseline (Material No.CP2854) on the drain plug (140).
(3) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the drain plug (140).
(4) Install the drain plug (140) in the drain port of the BSV (120). TORQUE the drain plug (140) to between 147.5 and 137.5 lbf.in (1.67 and 1.55 m.daN )
.
(5) Remove the protective covers from the BSV (120) and the manifolds and tubes (60, 80, 190, 220).
(6) Apply a thin layer graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (50, 40, 200, 160).
(7) Install the BSV (120) on the brackets (10, 210, 150) with bolts (50, 40, 200, 160). TORQUE the bolts (50, 40, 200, 160) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN ).
(8) Install a serviceable AIPC 73-11-70-01-070 GASKET (250) between the PCR fuel tube (220) and the BSV (120).
(9) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (260).
(10) Install the bolts (260) that attach the PCR fuel tube (220) to the BSV (120). TORQUE the bolts (260) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN ).
(11) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (230).
(12) Install the bolts (230) that attach the bracket (240) to the BSV (120). TORQUE the bolts (230) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN ).
(13) Install a serviceable AIPC 73-11-70-01-040 GASKET (170) between the fuel supply manifold (190) and the BSV (120).
(14) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (180).
(15) Install the bolts (180) that attach the fuel supply manifold (190) to the BSV (120). TORQUE the bolts (180) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN ).
(16) Install a serviceable AIPC 73-11-70-01-060 GASKET (100) between the fuel supply tube (80) and the BSV (120).
(17) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (90).
(18) Install the bolts (90) that attach the fuel supply tube (80) to the BSV (120). TORQUE the bolts (90) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN ).
(19) Install a serviceable AIPC 73-11-70-01-050 GASKET (110) between the signal manifold (60) and the BSV (120).
(20) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (70).
(21) Install the bolts (70) that attach the signal manifold (60) to the BSV (120). TORQUE the bolts (70) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN ).
(22) Remove the protective caps from the electrical connectors.
(23) Connect the electrical connectors, Channel A (30) and Channel B (20), to the BSV (120). Tighten the connectors by hand, plus one-eighth of a turn.
(24) Perform a minimum idle leak check (Ref. AMM TASK 71-00-00-710-006) and check on CFDS if no fault is present concerning the BSV.
5. Close-up(1) Remove the protective plug from the drain port of the BSV.
(2) Install a AIPC 73-11-70-01-090 O-RING (130) lubricated with vaseline (Material No.CP2854) on the drain plug (140).
(3) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the drain plug (140).
(4) Install the drain plug (140) in the drain port of the BSV (120). TORQUE the drain plug (140) to between 147.5 and 137.5 lbf.in (1.67 and 1.55 m.daN )
. (5) Remove the protective covers from the BSV (120) and the manifolds and tubes (60, 80, 190, 220).
(6) Apply a thin layer graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (50, 40, 200, 160).
(7) Install the BSV (120) on the brackets (10, 210, 150) with bolts (50, 40, 200, 160). TORQUE the bolts (50, 40, 200, 160) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (8) Install a serviceable AIPC 73-11-70-01-070 GASKET (250) between the PCR fuel tube (220) and the BSV (120).
(9) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (260).
(10) Install the bolts (260) that attach the PCR fuel tube (220) to the BSV (120). TORQUE the bolts (260) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (11) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (230).
(12) Install the bolts (230) that attach the bracket (240) to the BSV (120). TORQUE the bolts (230) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (13) Install a serviceable AIPC 73-11-70-01-040 GASKET (170) between the fuel supply manifold (190) and the BSV (120).
(14) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (180).
(15) Install the bolts (180) that attach the fuel supply manifold (190) to the BSV (120). TORQUE the bolts (180) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (16) Install a serviceable AIPC 73-11-70-01-060 GASKET (100) between the fuel supply tube (80) and the BSV (120).
(17) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (90).
(18) Install the bolts (90) that attach the fuel supply tube (80) to the BSV (120). TORQUE the bolts (90) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (19) Install a serviceable AIPC 73-11-70-01-050 GASKET (110) between the signal manifold (60) and the BSV (120).
(20) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (70).
(21) Install the bolts (70) that attach the signal manifold (60) to the BSV (120). TORQUE the bolts (70) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (22) Remove the protective caps from the electrical connectors.
(23) Connect the electrical connectors, Channel A (30) and Channel B (20), to the BSV (120). Tighten the connectors by hand, plus one-eighth of a turn.
(24) Perform a minimum idle leak check (Ref. AMM TASK 71-00-00-710-006) and check on CFDS if no fault is present concerning the BSV.
Subtask 73-11-70-410-058-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
(3) Remove the access platform(s).
Subtask 73-11-70-440-054-A ** ON A/C NOT FOR ALL Subtask 73-11-70-410-059-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
(3) Remove the access platform(s).