(2)
 Open the left MLG door (Ref. TASK 32-12-00-010-001).

 (3)
 Make sure that there is no hydraulic fluid leakage from the check valve(s).

 5. Close-up
________ Subtask 32-31-36-410-050
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Apply corrosion protection to the check valve(s), the pipe connections and the adjacent areas (Ref. TASK 51-75-13-916-002).

 (3)
 Close the left MLG door (Ref. TASK 32-12-00-410-001).

 (4)
 Remove the ground support and maintenance equipment, the special and standard tools and all other items.

 1EFF : ALL 1 32-31-36Page 412 1 1 Feb 01/98 1 1 1CES 1 CHECK VALVE - RETURN ISOLATION (2748GM) - REMOVAL/INSTALLATION

______________________________________________________________
 TASK 32-31-37-000-001
 Removal of the Check Valve 2748GM
 WARNING : MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE
_______
 YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT.

 WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______
 START A TASK ON OR NEAR:

 -
THE FLIGHT CONTROLS

 -
THE FLIGHT CONTROL SURFACES

 -
THE LANDING GEAR AND THE RELATED DOORS

 -COMPONENTS THAT MOVE.
 WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking plugs
 No specific circuit breaker(s) safety clip(s)
 No specific warning notices
 No specific access platform 1 m (3 ft. 3 in.)
 No specific container 5 l (1.3208 USgal)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
 External Power 29-00-00-910-002 Safety Procedures of the Hydraulic System 29-10-00-864-001 Depressurize the Green Hydraulic System 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power
 Transfer Unit (PTU) R 32-00-00-860-001 Flight Configuration Precautions with Electrical R Power
 32-12-00-010-001 Open the Main Gear Doors for Access
 1EFF : ALL 1 32-31-37Page 401 1 1 Feb 01/05 1 1 1CES 1 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------

32-31-37-991-001 Fig. 401
 3. Job Set-up
__________ Subtask 32-31-37-860-050
 A. Aircraft Maintenance Configuration
 (1) Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002)
 (2)
 Depressurize the Green hydraulic system (Ref. TASK 29-10-00-864-001). Subtask 32-31-37-010-050

 B. Get Access

 (1)
 Open the left MLG door (Ref. TASK 32-12-00-010-001). Subtask 32-31-37-869-050

 C. Disconnection of the PTU Isolation Coupling
 (1)
 Depressurize the reservoir of the Green hydraulic system (Ref. TASK 29-14-00-614-001).

 (2)
 Disconnect the PTU isolation coupling (Ref. TASK 29-23-00-860-001).

 (3)
 Obey the flight configuration precautions (Ref. TASK 32-00-00-860-001).

 (4)
 Put the access platform in position.

 1EFF : ALL 1 32-31-37Page 402 1 1 Feb 01/05R 1 1 1CES 1

 (5) Put the container below the check valve 2748GM to collect the hydraulic fluid leakage.
 Subtask 32-31-37-865-050
 D. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
 -------------------------------------------------------------------------------
R 49VU L/G/LGCIU/SYS1/NORM 1GA C09 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34 121VU HYDRAULIC/G HYD/PUMP ENG1/CTL 1701GK R35 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34
 Subtask 32-31-37-941-050
 E. Safety Precautions
　
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