DOC AIRBUS | AMM A320FRemoval/Installation of an O-ring (Hydraulic Systems)
TASK 20-29-00-911-002-A
Removal/Installation of an O-ring (Hydraulic Systems)
This procedure is applicable only for the installation of an O-ring on a manifold plug or on an another plug-in component (for example, of an equipment) of hydraulic systems.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 20-29-00-869-050-A
Subtask 20-29-00-911-052-A Subtask 20-29-00-911-053-A
[Rev.10 from 2021]
2026.04.01 04:47:46 UTC
Removal/Installation of an O-ring (Hydraulic Systems)
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobThis procedure is applicable only for the installation of an O-ring on a manifold plug or on an another plug-in component (for example, of an equipment) of hydraulic systems.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| 98A29103000000 | 1 | ASSEMBLY TOOL-HYDRAULIC SEALS |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-21-12-911-001-A | Tightening Torques for Pipe Unions (not for OXYGEN Unions) |
Installation of the O-ring SealSubtask 20-29-00-869-050-A
A. Not Applicable
4. ProcedureSubtask 20-29-00-911-052-A Subtask 20-29-00-911-053-A
B. Removal of the O-ring
(2) Discard the O-ring.
Subtask 20-29-00-911-054-A CAUTION:
DO NOT USE POINTED, SHARP OR METAL TOOLS TO REMOVE THE O-RING. SHARP EDGES CAN CAUSE DAMAGE TO THE GROOVES OR SEAL CONTACT SURFACES OF THE PLUG-IN COMPONENT.
(1) Use spoon-type removal tools or a wedge-type removal tool with a hook to remove the O-ring. (2) Discard the O-ring.
C. Installation of the O-ring
(a) Before the installation, make sure that the Part Number (P/N) of the O-ring is correct. Refer to the applicable Illustrated Parts Catalog (IPC) references.
(b) Make sure that the parts you install are clean and not damaged.
(c) Before you install the O-ring, make sure that the plug-in component is not damaged.
(a) Get the O-ring installation tool applicable to the diameter of the plug-in component.
(b) Install the sleeve (1) on the plug-in component.
(c) Lubrication
2 Lightly apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the conical end of the sleeve (1).
(d) Put the O-ring on the sleeve (1) until it touches the conical end of the sleeve (1).
(e) Move the pusher (2) on the sleeve (1) until it touches the O-ring.
(f) Push the pusher until the O-ring is in the correct position in the groove of the plug-in component.
(g) Make sure that the O-ring is in the correct position without torsion or damage.
(h) Remove the tool.
Subtask 20-29-00-911-055-A CAUTION:
DO NOT INSTALL THE REMOVED O-RING AGAIN. YOU MUST ALWAYS INSTALL A NEW O-RING BEFORE YOU INSTALL A REMOVED PLUG-IN COMPONENT AGAIN. A COMPRESSED SEAL WILL NOT GO BACK TO ITS INITIAL CONDITION.
(1) Safety precautions (a) Before the installation, make sure that the Part Number (P/N) of the O-ring is correct. Refer to the applicable Illustrated Parts Catalog (IPC) references.
(b) Make sure that the parts you install are clean and not damaged.
(c) Before you install the O-ring, make sure that the plug-in component is not damaged.
- Discard the plug-in component if it has scratches or the groove of the O-ring is damaged.
(a) Get the O-ring installation tool applicable to the diameter of the plug-in component.
(b) Install the sleeve (1) on the plug-in component.
(c) Lubrication
CAUTION:
ONLY USE HYDRAULIC FLUID MATERIAL NO. 02ABA1. OTHER LUBRICANTS CAN CAUSE DAMAGE TO THE O-RING.
1 Put the O-ring fully into Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) for a maximum of 30 minutes (this is to make sure that the wet surfaces of the seals are clean and no particle is stuck) before you install it on the sleeve (1). 2 Lightly apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the conical end of the sleeve (1).
(d) Put the O-ring on the sleeve (1) until it touches the conical end of the sleeve (1).
(e) Move the pusher (2) on the sleeve (1) until it touches the O-ring.
(f) Push the pusher until the O-ring is in the correct position in the groove of the plug-in component.
(g) Make sure that the O-ring is in the correct position without torsion or damage.
(h) Remove the tool.
D. Installation of the Plug-in Component on the Equipment Port or on the Manifold Port
(1) Lubricate only the thread of the housing with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
Do not lubricate the external thread of the plug-in component (O-ring side) because the lubricant can push out the O-ring from the plug-in component during the assembly.
(2) Install the plug-in component on the equipment or manifold and tighten manually.
(1) Lubricate only the thread of the housing with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
Do not lubricate the external thread of the plug-in component (O-ring side) because the lubricant can push out the O-ring from the plug-in component during the assembly.
(2) Install the plug-in component on the equipment or manifold and tighten manually.
NOTE: The plug-in component must turn freely in the equipment or manifold port.
(3) TORQUE the plug-in component to the applicable value (Ref. AMM TASK 20-21-12-911-001).