DOC AIRBUS | AMM A320FClean the Stage 7 Solenoid Valve [IAE]
TASK 75-32-51-100-015-A
Clean the Stage 7 Solenoid Valve
1. Reason for the Job
This TASK provides an extensive cleaning procedure for the stage 7, handling bleed solenoid valve and is offered as an alternative to TASK 75-32-51-100-014. Engines that operate in dusty or polluted environments will benefit from this procedure being carried out.
This TASK requires that the valve is taken off the engine and placed in a facility capable of carrying out the procedure.
It is possible for debris to accumulate on the units Retimet filters and on internal surfaces of the unit. This can cause valve malfunction. Removing the debris returns the valve to a functional condition.
This procedure allows the filter to be cleaned or replaced. If the filter is to be replaced, refer to the Component Maintenance Manual for part numbers and vendor details. This procedure also allows for internal cleaning of the unit using clean dry compressed air.
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 75-32-51-941-059-A ** ON A/C NOT FOR ALL
Subtask 75-32-51-020-059-A ** ON A/C NOT FOR ALL
Subtask 75-32-51-410-057-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:12:29 UTC
Clean the Stage 7 Solenoid Valve
1. Reason for the Job
This TASK provides an extensive cleaning procedure for the stage 7, handling bleed solenoid valve and is offered as an alternative to TASK 75-32-51-100-014. Engines that operate in dusty or polluted environments will benefit from this procedure being carried out.
This TASK requires that the valve is taken off the engine and placed in a facility capable of carrying out the procedure.
It is possible for debris to accumulate on the units Retimet filters and on internal surfaces of the unit. This can cause valve malfunction. Removing the debris returns the valve to a functional condition.
This procedure allows the filter to be cleaned or replaced. If the filter is to be replaced, refer to the Component Maintenance Manual for part numbers and vendor details. This procedure also allows for internal cleaning of the unit using clean dry compressed air.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | AIR SOURCE 2.5 TO 10 BAR (36.26 TO 145 PSI) - FILTERED |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 120 and 115 lbf.in (1.36 and 1.30 m.daN )  | |
| No specific | Torque wrench: range to between 225 and 220 lbf.in (2.54 and 2.49 m.daN ) | |
| IAE2R19437 | 1 | TEST SET - BLEED VALVE |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V01-124) | Isopropyl Alcohol, Technical grade |
| (Material No.V01-338) | Cleaning solvent |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| 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 75-32-51-000-010-A | Removal of the High Pressure Compressor (HPC) Stage 7 Solenoid Valve |
| TASK 75-32-51-400-010-A | Installation of the High Pressure Compressor (HPC) Stage 7 Solenoid Valve |
| TASK 75-32-51-700-010-A | Functional Test of the HPC Stage 7 Solenoid Valve with Test Set IAE2R19437 |
Stage 7 Solenoid ValveSubtask 75-32-51-941-059-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 75-32-51-010-062-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
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
4. Procedure(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 75-32-51-020-059-A ** ON A/C NOT FOR ALL
A. Remove the solenoid valve from the engine (Ref. AMM TASK 75-32-51-000-010).
(1) Take the solenoid valve to a maintenance shop with suitable facilities to carry out this task.
Subtask 75-32-51-020-060-A ** ON A/C NOT FOR ALL (1) Take the solenoid valve to a maintenance shop with suitable facilities to carry out this task.
B. Remove the retimet filters.
(1) Remove the circlip (2) from the servo vent port of the stage 7 solenoid valves.
(2) Remove the retimet filter (1) from the servo vent port of the stage 7 solenoid valves.
(3) Remove the circlip (3) from the exhaust vent port of the stage 7 solenoid valves.
(4) Remove the retimet filter (4) from the exhaust vent port of the stage 7 solenoid valves.
(5) Ensure that any accumulated debris within the solenoid servo vent and exhaust vent ports is removed. Use AIR SOURCE 2.5 TO 10 BAR (36.26 TO 145 PSI) - FILTERED at 100 to 150 psi. for this procedure.
(6) Remove the union (13) from the service port of the stage 7 solenoid valves.
(7) Remove the washer (12) from the service port of the stage 7 solenoid valves.
(8) Remove the circlip (11) from the service port of the stage 7 solenoid valves.
(9) Remove the retimet filter (10) from the service port of the stage 7 solenoid valves.
(10) Remove the union (14) from the inlet port of the stage 7 solenoid valves.
(11) Remove the washer (15) from the inlet port of the stage 7 solenoid valves.
(12) Remove the circlip (16) from the inlet port of the stage 7 solenoid valves.
(13) Remove the retimet filter (17) from the inlet port of the stage 7 solenoid valves.
(14) Ensure that any accumulated debris within the inlet and service ports is removed. Use AIR SOURCE 2.5 TO 10 BAR (36.26 TO 145 PSI) - FILTERED at 100 to 150 psi for this procedure.
Subtask 75-32-51-210-051-A ** ON A/C NOT FOR ALL (1) Remove the circlip (2) from the servo vent port of the stage 7 solenoid valves.
(2) Remove the retimet filter (1) from the servo vent port of the stage 7 solenoid valves.
(3) Remove the circlip (3) from the exhaust vent port of the stage 7 solenoid valves.
(4) Remove the retimet filter (4) from the exhaust vent port of the stage 7 solenoid valves.
(5) Ensure that any accumulated debris within the solenoid servo vent and exhaust vent ports is removed. Use AIR SOURCE 2.5 TO 10 BAR (36.26 TO 145 PSI) - FILTERED at 100 to 150 psi. for this procedure.
(6) Remove the union (13) from the service port of the stage 7 solenoid valves.
(7) Remove the washer (12) from the service port of the stage 7 solenoid valves.
(8) Remove the circlip (11) from the service port of the stage 7 solenoid valves.
(9) Remove the retimet filter (10) from the service port of the stage 7 solenoid valves.
(10) Remove the union (14) from the inlet port of the stage 7 solenoid valves.
(11) Remove the washer (15) from the inlet port of the stage 7 solenoid valves.
(12) Remove the circlip (16) from the inlet port of the stage 7 solenoid valves.
(13) Remove the retimet filter (17) from the inlet port of the stage 7 solenoid valves.
(14) Ensure that any accumulated debris within the inlet and service ports is removed. Use AIR SOURCE 2.5 TO 10 BAR (36.26 TO 145 PSI) - FILTERED at 100 to 150 psi for this procedure.
C. Inspect and clean the retimet filters.
(1) Inspect the internal and external face of the filter and remove deposits of contamination.
(2) Place the removed filters in a small amount of Cleaning solvent (Material No.V01-338) orV01-124 Isopropyl Alcohol, Technical grade
(3) Remove the filters from the solvent or alcohol and thoroughly dry with a clean air blast.
(4) Inspect the filters. If the filters cannot be cleaned satisfactorily replace the filtersCMM 753251 .
Subtask 75-32-51-420-056-A ** ON A/C NOT FOR ALL (1) Inspect the internal and external face of the filter and remove deposits of contamination.
(2) Place the removed filters in a small amount of Cleaning solvent (Material No.V01-338) or
(3) Remove the filters from the solvent or alcohol and thoroughly dry with a clean air blast.
(4) Inspect the filters. If the filters cannot be cleaned satisfactorily replace the filters
D. Install the servo vent and exhaust vent retimet filters.
(1) Install the retimet filter (4) to the exhaust vent port of the stage 7 solenoid valves.
(2) Install the circlip (3) to the exhaust vent port of the stage 7 solenoid valves.
(3) Install the retimet filter (1) to the servo vent port of the stage 7 solenoid valves.
(4) Install the circlip (2) to the servo vent port of the stage 7 solenoid valves.
Subtask 75-32-51-420-057-A ** ON A/C NOT FOR ALL (1) Install the retimet filter (4) to the exhaust vent port of the stage 7 solenoid valves.
(2) Install the circlip (3) to the exhaust vent port of the stage 7 solenoid valves.
(3) Install the retimet filter (1) to the servo vent port of the stage 7 solenoid valves.
(4) Install the circlip (2) to the servo vent port of the stage 7 solenoid valves.
E. Install the inlet and service union retimet filters.
(1) Install the retimet filter (10) to the service port of the stage 7 solenoid valves.
(2) Install the circlip (11) to the service port of the stage 7 solenoid valves.
(3) Install the washer (12) to the service port of the stage 7 solenoid valves.
(4) Install the union (13) to the service port of the stage 7 solenoid valves. Use a torque spanner and a socket to torque load the service union to between 120 and 115 lbf.in (1.36 and 1.30 m.daN ).
(5) Install the retimet filter (17) to the inlet port of the stage 7 solenoid valves.
(6) Install the circlip (16) to the inlet port of the stage 7 solenoid valves.
(7) Install the washer (15) to the inlet port of the stage 7 solenoid valves.
(8) Install the union (14) to the inlet port of the stage 7 solenoid valves. Use a torque spanner and a socket to torque load the inlet union to between 225 and 220 lbf.in (2.54 and 2.49 m.daN ).
Subtask 75-32-51-420-058-A ** ON A/C NOT FOR ALL Subtask 75-32-51-710-053-A ** ON A/C NOT FOR ALL (1) Install the retimet filter (10) to the service port of the stage 7 solenoid valves.
(2) Install the circlip (11) to the service port of the stage 7 solenoid valves.
(3) Install the washer (12) to the service port of the stage 7 solenoid valves.
(4) Install the union (13) to the service port of the stage 7 solenoid valves. Use a torque spanner and a socket to torque load the service union to between 120 and 115 lbf.in (1.36 and 1.30 m.daN )
. (5) Install the retimet filter (17) to the inlet port of the stage 7 solenoid valves.
(6) Install the circlip (16) to the inlet port of the stage 7 solenoid valves.
(7) Install the washer (15) to the inlet port of the stage 7 solenoid valves.
(8) Install the union (14) to the inlet port of the stage 7 solenoid valves. Use a torque spanner and a socket to torque load the inlet union to between 225 and 220 lbf.in (2.54 and 2.49 m.daN )
. G. Test the stage 7 solenoid for operation.
(1) Test the stage 7 solenoid valve for operation (Ref. AMM TASK 75-32-51-700-010). If sufficient time is available exercise the solenoid valve for a minimum of five times.
5. Close-up(1) Test the stage 7 solenoid valve for operation (Ref. AMM TASK 75-32-51-700-010). If sufficient time is available exercise the solenoid valve for a minimum of five times.
NOTE: THIS TASK REQUIRES THE USE OF THE BLEED VALVE TEST SET IAE2R19437 TEST SET - BLEED VALVE.
Subtask 75-32-51-410-057-A ** ON A/C NOT FOR ALL