DOC AIRBUS | AMM A320FInstallation of the Pressure Raising Valve (PRV) and Tubes [IAE]
TASK 73-11-47-400-012-A
Installation of the Pressure Raising Valve (PRV) and Tubes
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 73-11-47-860-052-A ** ON A/C NOT FOR ALL
Subtask 73-11-47-420-054-A ** ON A/C NOT FOR ALL
Subtask 73-11-47-410-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 12:56:04 UTC
Installation of the Pressure Raising Valve (PRV) and Tubes
WARNING:
DO NOT TOUCH ANY OF THE ENGINE COMPONENTS OR TUBES FOR A SHORT TIME AFTER THE ENGINE IS SHUTDOWN. THE ENGINE COMPONENTS STAY HOT FOR SOME TIME AND CAN CAUSE INJURY.
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.
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.V02-126) | lockwire |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-710-012-B | Test No.3 : Idle Leak Check |
| TASK 71-00-00-710-045-A | Test No.1 : Dry Motor Leak Check |
| TASK 71-13-00-010-010-A | Opening of the Fan Cowls 437AL(447AL),438AR(448AR) |
| TASK 71-13-00-410-010-A | Closing of the Fan Cowls 437AL(447AL),438AR(448AR) |
| TASK 73-11-47-000-012-A | Removal of the Pressure Raising Valve (PRV) and Tubes |
Pressure Raising Valve and Tube (Sheet 1 thru 9)Subtask 73-11-47-860-052-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 is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
Subtask 73-11-47-010-061-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 is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
B. Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 73-11-47-630-052-A ** ON A/C NOT FOR ALL (1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
C. Remove the applicable CAP - BLANKING, COVER - PROTECTION and PLUG - BLANKING on all the openings.
4. ProcedureSubtask 73-11-47-420-054-A ** ON A/C NOT FOR ALL
A. Installation of the fuel tube (1)
(1) Install the tube assembly (1) to the four way connector (12) with the new packing (11) at position D.
(2) Install the bolt (18), the washer (22) and the nut (23) that attach the clips (19) and (21) to the lug on the tube at position C.
(3) TORQUE the nut on the tube (1) to between 475 and 425 lbf.in (5.37 and 4.80 m.daN )
.
(4) Safety the tube nut with the lockwire (Material No.V02-126) .
(5) TORQUE the nut (23) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ).
Subtask 73-11-47-420-055-A ** ON A/C NOT FOR ALL (1) Install the tube assembly (1) to the four way connector (12) with the new packing (11) at position D.
(2) Install the bolt (18), the washer (22) and the nut (23) that attach the clips (19) and (21) to the lug on the tube at position C.
(3) TORQUE the nut on the tube (1) to between 475 and 425 lbf.in (5.37 and 4.80 m.daN )
. (4) Safety the tube nut with the lockwire (Material No.V02-126) .
(5) TORQUE the nut (23) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN )
. B. Installation of the adaptor (7) to the bifurcation panel (9)
(1) Install the adaptor (7) to the bifurcation panel (9) with the two bolts (6) and the two nuts (8) at position G.
(2) TORQUE the two nuts (8) to between 105 and 85 lbf.in (1.19 and 0.96 m.daN ).
Subtask 73-11-47-420-056-A ** ON A/C NOT FOR ALL (1) Install the adaptor (7) to the bifurcation panel (9) with the two bolts (6) and the two nuts (8) at position G.
(2) TORQUE the two nuts (8) to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )
. C. Installation of the fuel tube (2)
(1) Install the tube assembly (2) to the outlet of the VSV actuator with the new packing (11) at position U.
(2) Install the tube assembly (2) to the adaptor (7) on the bifurcation panel (9) at position G.
(3) Install the spacer (27) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (24), the washer (25), the spacer (27) and the nut (28) that attach the clip (26) to the lug on the tube at position A.
(4) Install the spacer (14) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (13), the spacer (14), the washer (16) and the nut (17) that attach the clip (15) to the lug on the tube (1) at position B.
(5) Install the bolt (29), the washer (32) and the nut (33) that attach the clip (31) to the lug on the tube (2) at position E.
(6) Install the bolt (34), the washer (36) and the nut (37) that attach the clip (35) to the lug on the tube (2) at position F.
(7) Make sure the tube (2) is positioned correctly and TORQUE the tube nuts to between 360 and 330 lbf.in (4.07 and 3.73 m.daN ).
(8) Safety the tube nuts with the lockwire (Material No.V02-126) .
(9) TORQUE the four nuts (17), (28), (33) and (37) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ).
Subtask 73-11-47-420-057-A ** ON A/C NOT FOR ALL (1) Install the tube assembly (2) to the outlet of the VSV actuator with the new packing (11) at position U.
(2) Install the tube assembly (2) to the adaptor (7) on the bifurcation panel (9) at position G.
(3) Install the spacer (27) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (24), the washer (25), the spacer (27) and the nut (28) that attach the clip (26) to the lug on the tube at position A.
(4) Install the spacer (14) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (13), the spacer (14), the washer (16) and the nut (17) that attach the clip (15) to the lug on the tube (1) at position B.
(5) Install the bolt (29), the washer (32) and the nut (33) that attach the clip (31) to the lug on the tube (2) at position E.
(6) Install the bolt (34), the washer (36) and the nut (37) that attach the clip (35) to the lug on the tube (2) at position F.
(7) Make sure the tube (2) is positioned correctly and TORQUE the tube nuts to between 360 and 330 lbf.in (4.07 and 3.73 m.daN )
. (8) Safety the tube nuts with the lockwire (Material No.V02-126) .
(9) TORQUE the four nuts (17), (28), (33) and (37) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN )
. D. Installation of the fuel tube (3)
(1) Install the tube assembly (3) to the adaptor (7) on the bifurcation panel (9) at position G.
(2) Install the Pressure Raising Valve (PRV) (10) to the tube assembly (3) at position M.
(3) Install the bolt (38), the washer (39) and the nut (41) that attach the clip (40) to the lug on the tube (3) at position H.
(4) Install the bolt (42), the two washers (43) and (46) and the nut (47) that attach the clips (44) and (45) to the lug on the tube at position J.
(5) Install the spacer (51) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (48), the washer (49), the spacer (51), the washer (53) and the nut (54) that attach the clips (50) and (52) to the lug on the tube at position K.
PRE SBE 71-0288
(6) Install the spacer (59) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (55), the spacer (59), the washer (61) and the nut (62) that attach the clips (57), (58) and (60) to the lug on the tube at position L.
END OF PRE SBE 71-0288
POST SBE 71-0288
(7) Install the spacer (59) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (55), the washer (56), the spacer (59), the washer (61) and the nut (62) that attach the clips (57), (58) and (60) to the lug on the tube at position L.
END OF POST SBE 71-0288
(8) Make sure the tube (3) is positioned correctly and TORQUE the tube nuts to between 177 and 159 lbf.in (2.00 and 1.80 m.daN ).
(9) Safety the tube nuts with the lockwire (Material No.V02-126) .
(10) TORQUE the four nuts (41), (47), (54) and (62) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ).
Subtask 73-11-47-420-058-A ** ON A/C NOT FOR ALL (1) Install the tube assembly (3) to the adaptor (7) on the bifurcation panel (9) at position G.
(2) Install the Pressure Raising Valve (PRV) (10) to the tube assembly (3) at position M.
(3) Install the bolt (38), the washer (39) and the nut (41) that attach the clip (40) to the lug on the tube (3) at position H.
(4) Install the bolt (42), the two washers (43) and (46) and the nut (47) that attach the clips (44) and (45) to the lug on the tube at position J.
(5) Install the spacer (51) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (48), the washer (49), the spacer (51), the washer (53) and the nut (54) that attach the clips (50) and (52) to the lug on the tube at position K.
PRE SBE 71-0288
(6) Install the spacer (59) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (55), the spacer (59), the washer (61) and the nut (62) that attach the clips (57), (58) and (60) to the lug on the tube at position L.
END OF PRE SBE 71-0288
POST SBE 71-0288
(7) Install the spacer (59) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (55), the washer (56), the spacer (59), the washer (61) and the nut (62) that attach the clips (57), (58) and (60) to the lug on the tube at position L.
END OF POST SBE 71-0288
(8) Make sure the tube (3) is positioned correctly and TORQUE the tube nuts to between 177 and 159 lbf.in (2.00 and 1.80 m.daN )
. (9) Safety the tube nuts with the lockwire (Material No.V02-126) .
(10) TORQUE the four nuts (41), (47), (54) and (62) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN )
. E. Installation of the fuel tube (4)
(1) Install the tube assembly (4) to the PRV (10) at position M.
(2) Install the tube assembly (4) to the tube (5).
(3) Install the bolt (63), the washer (64) and the nut (66) that attach the clip (65) to the lug on the tube (4) at position N.
(4) Install the bolt (67), the two washers (68) and (71) and the nut (72) that attach the clips (69) and (70) to the lug on the tube at position P.
PRE SBE 71-0288
(5) Install the two spacers (84) and (86) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (81), the washer (82), the two spacers (84) and (86), the washer (88) and the nut (89) that attach the clips (83), (85) and (87) to the lug on the tube at position Q.
END OF PRE SBE 71-0288
POST SBE 71-0288
(6) Install the two spacers (84) and (86) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (81), the two spacers (84) and (86), the washer (88) and the nut (89) that attach the clips (83), (85) and (87) to the lug on the tube at position Q.
END OF POST SBE 71-0288
(7) Install the two spacers (76) and (78) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (73), the washer (74) and the two spacers (76) and (78) that attach the clips (75), (77) and (79) to the bracket (80) at position R.
(8) Make sure the tube (4) is positioned correctly and TORQUE the tube nuts to between 248 and 230 lbf.in (2.80 and 2.60 m.daN ).
(9) Safety the tube nuts with the lockwire (Material No.V02-126) .
(10) TORQUE the three nuts (66), (72) and (89) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ).
(11) TORQUE the bolt (73) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ).
SBE73-0224
SBE73-0235
(12) Install the blanking plug (90) on the fuel tube (5) at position T.
(13) TORQUE the nut to between 248 and 230 lbf.in (2.80 and 2.60 m.daN ).
(14) Installation of the lockwire
END OF SBE73-0224
END OF SBE73-0235
5. Close-up(1) Install the tube assembly (4) to the PRV (10) at position M.
(2) Install the tube assembly (4) to the tube (5).
(3) Install the bolt (63), the washer (64) and the nut (66) that attach the clip (65) to the lug on the tube (4) at position N.
(4) Install the bolt (67), the two washers (68) and (71) and the nut (72) that attach the clips (69) and (70) to the lug on the tube at position P.
PRE SBE 71-0288
(5) Install the two spacers (84) and (86) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (81), the washer (82), the two spacers (84) and (86), the washer (88) and the nut (89) that attach the clips (83), (85) and (87) to the lug on the tube at position Q.
END OF PRE SBE 71-0288
POST SBE 71-0288
(6) Install the two spacers (84) and (86) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (81), the two spacers (84) and (86), the washer (88) and the nut (89) that attach the clips (83), (85) and (87) to the lug on the tube at position Q.
END OF POST SBE 71-0288
(7) Install the two spacers (76) and (78) at the position noted during removal (Ref. AMM TASK 73-11-47-000-012). Install the bolt (73), the washer (74) and the two spacers (76) and (78) that attach the clips (75), (77) and (79) to the bracket (80) at position R.
(8) Make sure the tube (4) is positioned correctly and TORQUE the tube nuts to between 248 and 230 lbf.in (2.80 and 2.60 m.daN )
. (9) Safety the tube nuts with the lockwire (Material No.V02-126) .
(10) TORQUE the three nuts (66), (72) and (89) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN )
. (11) TORQUE the bolt (73) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN )
. SBE73-0224
SBE73-0235
(12) Install the blanking plug (90) on the fuel tube (5) at position T.
(13) TORQUE the nut to between 248 and 230 lbf.in (2.80 and 2.60 m.daN )
. (14) Installation of the lockwire
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.
(a) Safety the tube nut on the tube assembly (16) with lockwire (Material No.V02-126) . END OF SBE73-0224
END OF SBE73-0235
Subtask 73-11-47-410-053-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 fan cowls (Ref. AMM TASK 71-13-00-410-010).
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
Subtask 73-11-47-790-052-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 fan cowls (Ref. AMM TASK 71-13-00-410-010).
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
B. Test Requirements
(1) Do an idle leak check (Ref. AMM TASK 71-00-00-710-012).
(1) Do an idle leak check (Ref. AMM TASK 71-00-00-710-012).
NOTE: A dry motor leak check (Ref. AMM TASK 71-00-00-710-045) may be used to check for leaks, but this must be followed by an idle leak check (Ref. AMM TASK 71-00-00-710-012).