Replacement of the O-ring Seal of the Filling Valve

TASK 52-10-00-610-002-A
Replacement of the O-ring Seal of the Filling Valve

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	1	BRUSH - NON METALLIC, SOFT
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	Torque wrench: range to between 3.15 and 2.85 m.daN (23.23 and 21.02 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BBC1)	Non Aqueous Cleaner-- Naphta based and Alcohol -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	PACKING-PREFORMED BUY	AIPC 52-11-14-01-065
2	PACKING-PREFORMED BUY	AIPC 52-11-14-02-180

D. Referenced Information

REFERENCE	DESIGNATION
TASK 25-23-46-000-001-A	Removal of the Door Linings from the Forward Passenger/Crew Doors
TASK 25-23-46-000-002-A	Removal of the Door Linings from the Aft Passenger/Crew Doors
TASK 25-23-46-400-001-A	Installation of the Door Linings on the Forward Passenger/Crew Doors
TASK 25-23-46-400-002-A	Installation of the Door Linings on the Aft Passenger/Crew Doors
TASK 52-10-00-010-001-A	Opening of the Passenger/Crew Door
TASK 52-10-00-614-001-A	Discharging/Charging of the Door Damper and Emergency Operation Cylinder of the Passenger/Crew Doors
TASK 52-10-00-860-001-A	Special Precautions before Work on the Passenger/Crew Door
TASK 52-10-00-860-002-A	Special Precautions after Work on the Passenger/Crew Door
Replacement of the Filling Valve and the O-ring Seal

3. Job Set-up
Subtask 52-10-00-941-073-A

A. Get Access

WARNING: DO NOT OPEN THE PASSENGER/CREW DOOR IF THE WIND SPEED IS MORE THAN 65 KNOTS.

WARNING: BEFORE YOU START WORK ON THE DOOR, MAKE SURE THAT:

THE EMERGENCY CONTROL HANDLE IS IN THE DISARMED POSITION WITH THE SAFETY PIN INSTALLED.
THE PERCUSSION LEVER OF THE DOOR-DAMPER AND EMERGENCY-OPERATION CYLINDER IS IN THE DISARMED POSITION WITH THE SAFETY PIN INSTALLED.

IF YOU DO NOT OBEY THESE INSTRUCTIONS, THE DOOR CAN OPEN WITH FORCE OR THE ESCAPE SLIDE CAN DEPLOY SUDDENLY. THIS CAN CAUSE INJURY AND/OR DAMAGE.

WARNING: STOP THE OPENING PROCEDURE IF THE RED WARNING LIGHT FLASHES. IF THE RED WARNING LIGHT FLASHES, REMAINING PRESSURE CAN CAUSE THE DOOR TO OPEN SUDDENLY AND CAN:

KILL OR CAUSE SERIOUS INJURY TO PERSONS
CAUSE DAMAGE TO THE AIRCRAFT.

(1) Put an ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position at zone 831 (841) or 832 (842).
(2) Open the passenger/crew door 831 (841) or 832 (842) (Ref. AMM TASK 52-10-00-010-001).
(3) Obey the special precautions before you start work on the door (Ref. AMM TASK 52-10-00-860-001).

Subtask 52-10-00-865-095-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	EIS/SLIDES/ARM AND WARN/FLT	15WN	P11
121VU	EIS/SLIDES/ARM AND WARN/GND	13WN	P10
121VU	EIS/SDAC1 AND 2/DOOR/DET/PAX	48WV	P05

Subtask 52-10-00-020-064-A

C. Removal of the Components
(1) Remove the lining panels 831FZ (841FZ) and 831GZ (841GZ) (Ref. AMM TASK 25-23-46-000-001) or 832FZ (842FZ) and 832GZ (842GZ) (Ref. AMM TASK 25-23-46-000-002).
(2) Bleed the pressurized bottle with the valve (3) until the pressure gage shows "0".

4. Procedure
Subtask 52-10-00-020-065-A

WARNING: DO NOT LET COMPRESSED GAS TOUCH YOUR SKIN. THE GAS CAN GO THROUGH THE SKIN AND MAKE BUBBLES IN THE BLOOD. THIS CONDITION CAN KILL YOU.

CAUTION: MAKE SURE THAT THE TOOLS AND SPARE PARTS ARE CLEAN AND IN THE CORRECT CONDITION. CLEAN OR REPLACE THEM IF NECESSARY. IF THE TOOLS AND SPARE PARTS ARE DIRTY, CONTAMINATION CAN GO INTO THE FILLING VALVE AND NITROGEN CYLINDER AND CAUSE A NITROGEN LEAK.

A. Removal of the O-ring Seal

Replacement of the Filling Valve and the O-ring Seal

(1) Remove the blanking plug (4) from the filling valve (3).
(2) Remove the filling valve (3) from the damper and emergency operation cylinder (1).
(3) Remove the O-ring seal (2).

Subtask 52-10-00-420-064-A

WARNING: DO NOT FILL THE DOOR DAMPER AND EMERGENCY OPERATION CYLINDER TO A PRESSURE OF MORE THAN 120 BAR (1740 PSI). TOO MUCH PRESSURE WHEN YOU FILL THE CYLINDER CAN CAUSE INJURY AND/OR DAMAGE.

B. Installation of the O-ring Seal

Replacement of the Filling Valve and the O-ring Seal

(1) Clean the parts you removed with a BRUSH - NON METALLIC, SOFT and a lint-free cotton cloth Textile-Lint free Cotton - (Material No.14SBA1) .
(2) Clean the parts you removed with Non Aqueous Cleaner-- Naphta based and Alcohol - (Material No.08BBC1) .
(3) Dry the parts with dry compressed air.
(4) Install the new AIPC 52-11-14-02-180 PACKING-PREFORMED BUY (2) or AIPC 52-11-14-01-065 PACKING-PREFORMED BUY (2) (referred to in this procedure as the 0-ring seal).
(5) Install the filling valve (3) on the damper and emergency operation cylinder (1).

CAUTION: DO NOT APPLY MORE THAN THE SPECIFIED TORQUE TO THE SCREWS OF THE GUIDE. OVERTORQUE WILL CAUSE DAMAGE TO THE DIAPHRAGM AND WILL THUS CAUSE LEAKAGE OF NITROGEN FROM THE CYLINDER.

(6) TORQUE the filling valve to between 3.15 and 2.85 m.daN (23.23 and 21.02 lbf.ft )

.
(7) Installation of the blanking plug.

CAUTION: MAKE SURE THAT THE BLANKING PLUG IS INSTALLED ON THE FILLING VALVE OF THE DOOR-DAMPER ACTUATOR CYLINDER. IF THERE IS NO BLANKING PLUG, CONTAMINATION CAN GO INTO THE FILLING VALVE AND NITROGEN CYLINDER AND CAUSE A NITROGEN LEAK.

(a) Install the blanking plug (4) on the filling valve (3).
(8) Fill the nitrogen bottle through the filling valve (3) to the correct pressure (Ref. AMM TASK 52-10-00-614-001).

5. Close-up
Subtask 52-10-00-420-071-A

A. Installation of the Components
(1) Install the lining panels 831FZ (841FZ) and 831GZ (841GZ) (Ref. AMM TASK 25-23-46-400-001) or 832FZ (842FZ) and 832GZ (842GZ) (Ref. AMM TASK 25-23-46-400-002).

Subtask 52-10-00-865-096-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	EIS/SLIDES/ARM AND WARN/FLT	15WN	P11
121VU	EIS/SLIDES/ARM AND WARN/GND	13WN	P10
121VU	EIS/SDAC1 AND 2/DOOR/DET/PAX	48WV	P05

Subtask 52-10-00-942-076-A

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Obey the special precautions after the work on the door (Ref. AMM TASK 52-10-00-860-002).
(3) Close the passenger/crew door 831 (841) or 832 (842) (Ref. AMM TASK 52-10-00-860-002).
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 07:21:51 UTC