Clean and/or Replace the Stage 7 Solenoid Valve Servo Vent and Exhaust Vent Retimet Filters [IAE]

TASK 75-32-51-100-014-A
Clean and/or Replace the Stage 7 Solenoid Valve Servo Vent and Exhaust Vent Retimet Filters

1. Reason for the Job
This TASK is for the stage 7, handling bleed solenoid valve.
It is possible for debris to accumulate on the internal face of the Servo Vent and Exhaust Vent Retimet filters. 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.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	BRUSH - BRISTLED
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-338)	Cleaning solvent

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Referenced Information

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)
CMM 753251
Stage 7 Solenoid Valve

3. Job Set-up
Subtask 75-32-51-941-056-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 75-32-51-010-059-A ** ON A/C NOT FOR ALL

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
Subtask 75-32-51-020-057-A ** ON A/C NOT FOR ALL

A. Remove the solenoid servo vent and exhaust vent retimet filters.

Stage 7 Solenoid Valve ** ON A/C NOT FOR ALL

CAUTION: THE COMPONENT PARTS REMOVED IN THIS PROCEDURE ARE VERY SMALL. EXTREME CARE MUST BE TAKEN WHEN REMOVING/INSTALLING THESE ITEMS, TO PREVENT FOD HAZARD.

(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 than any accumulated debris within the solenoid servo vent and exhaust vent ports is removed. Use a soft BRUSH - BRISTLED or Vacuum Equipment cleaner for this procedure.

Subtask 75-32-51-210-050-A ** ON A/C NOT FOR ALL

B. Inspect and clean the servo vent and exhaust vent retimet filters.
(1) Inspect the internal 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) for 5 minutes.
(3) Remove the filters from the solvent and throughly dry with clean air blast.
(4) Inspect the filters. If the filters cannot be cleaned satisfactorily replace the filters CMM 753251.

Subtask 75-32-51-420-054-A ** ON A/C NOT FOR ALL

C. Install the servo vent and exhaust vent retimet filters.

Stage 7 Solenoid Valve ** ON A/C NOT FOR ALL

(1) Install the retimet filter (1) to the servo vent port of the stage 7 solenoid valves.
(2) Install the retimet filter (4) to the exhaust vent port of the stage 7 solenoid valves.
(3) Install the circlip (2) to the servo vent port of the stage 7 solenoid valves.
(4) Install the circlip (3) to the exhaust vent port of the stage 7 solenoid valves.

5. Close-up
Subtask 75-32-51-410-056-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 WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:12:28 UTC