Clean the Fluid in the Green Hydraulic System

TASK 12-36-29-615-001-A
Clean the Fluid in the Green Hydraulic System

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:

FLUSH IT AWAY WITH CLEAN WATER
GET MEDICAL AID.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

1. Reason for the Job
To remove water, chlorinated solvent and particles from the hydraulic fluid of the Green hydraulic system.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
HSPA181-380J	1	HYDRAULIC PURIFIER
HSPA181J	1	HYDRAULIC PURIFIER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
197CB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 12-32-29-281-001-A	Analyze Hydraulic Fluid
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
TASK 29-23-00-860-001-A	Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 29-23-00-860-002-A	Connection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access

3. Job Set-up
Subtask 12-36-29-860-089-A

A. Aircraft Maintenance Configuration

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001).
(3) To isolate the PTU:

Disconnect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-001) or
On panel 40VU at the overhead panel, push the PTU pushbutton switch (OFF light comes on).

(4) Look at the quantity indicator on the hydraulic reservoir and make sure:

That the fluid level is correct, add fluid as necessary (Ref. AMM TASK 12-12-29-611-001).

(5) Look at the air pressure gage on the hydraulic reservoir and make sure:

That the air pressure in the reservoir of the Green System is 50 psi, pressurize the hydraulic reservoir as necessary (Ref. AMM TASK 29-14-00-614-002).

(6) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 12-36-29-010-097-A

B. Get Access
(1) Open the left main landing gear door (Ref. AMM TASK 32-12-00-010-001).
(2) Open the access door 197CB.

4. Procedure
Subtask 12-36-29-615-057-A

A. Clean the Fluid in the Green Hydraulic System

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Prepare the HSPA181-380J HYDRAULIC PURIFIER or the HSPA181J HYDRAULIC PURIFIER.
(2) Connect the HSPA181-380J HYDRAULIC PURIFIER or the HSPA181J HYDRAULIC PURIFIER to the aircraft connectors:

1006GM suction
1008GM delivery.

and do the cleaning procedure of the Green hydraulic system.
(3) Disconnect the HSPA181-380J HYDRAULIC PURIFIER or the HSPA181J HYDRAULIC PURIFIER from the aircraft connectors.

Subtask 12-36-29-615-050-A

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Subtask 12-36-29-615-050-C

DELETED

Subtask 12-36-29-615-050-D

DELETED

Subtask 12-36-29-615-050-E

DELETED

5. Close-up
Subtask 12-36-29-860-090-A

A. Put the aircraft back to the serviceable condition.
(1) To connect the PTU (refer to the job set-up):

Connect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-002) or
On panel 40VU at the overhead panel, push and release the PTU pushbutton switch (OFF light goes off).

(2) Look at the quantity indicator on the hydraulic reservoir and make sure:

That the fluid level is correct, add fluid as necessary (Ref. AMM TASK 12-12-29-611-001).

(3) Look at the air pressure gage on the hydraulic reservoir and make sure:

That the air pressure in the reservoir of the Green System is 50 psi, pressurize the hydraulic reservoir as necessary (Ref. AMM TASK 29-14-00-614-002).

(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(5) Collect a fluid sample between 1 to 5 Flight Cycles after fluid replacement and send it for analysis (Ref. AMM TASK 12-32-29-281-001).

NOTE: The A/C can be released into service for 14 days, waiting for positive sampling results.

Subtask 12-36-29-410-084-A

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) CLose the left main landing gear door (Ref. AMM TASK 32-12-00-010-001).
(3) Close the access door 197CB.

[Rev.10 from 2021] 2026.04.01 04:44:10 UTC