_______
GROUND HYDRAULIC CART ARE SET TO A MINIMUM.
(10)
Connect the pressure hose of the hydraulic power cart to the delivery connector 1008GM with an adaptor.
(11)
Connect the return hose of the hydraulic power cart to the manifold end of the case drain line with an adaptor.
(12)
Put blanking plugs on the disconnected line ends.
4. Procedure
_________
(Ref. Fig. 304/TASK 12-36-29-991-004) Subtask 12-36-29-170-053
A. Flush the Green hydraulic system.
(1) Operate the hydraulic power cart for 20 s at 20 bar (290.0754 psi).
(2) Stop the hydraulic power cart. Subtask 12-36-29-960-053
B. Replace the LP filter element (Ref. TASK 29-11-44-610-001).
5. Close-up
________ Subtask 12-36-29-860-061
A. Put the system back to the serviceable condition.
(1)
Disconnect the return hose of the hydraulic power cart and the adaptor from the case drain line.
(2)
Disconnect the pressure hose of the hydraulic power cart and the adaptor from the delivery connector 1008GM.
(3)
Disconnect and remove the union from the pressure line and the case drain line.
(4)
Remove the hydraulic power cart.
(5)
Remove the blanking plugs.
(6)
Connect the case drain line to the PTU 1088GM.
(7)
Connect the pressure line of the PTU 1088GM.
(8)
Connect the case drain line to the LP manifold 1003GM.
Subtask 12-36-29-790-053
B. Leak Test of the Components which were Disconnected
(1)
Pressurize the Green hydraulic system (Ref. TASK 29-10-00-863-001).
(2)
Make sure that there is no hydraulic fluid leakage.
(3)
Depressurize the Green hydraulic system (Ref. TASK 29-10-00-864-001). Subtask 12-36-29-942-092
C. Put the aircraft back to its initial configuration.
(1)
Remove the containers.
(2)
Remove the safety barriers.
(3)
Remove the access platform(s).
(4)
Remove the warning notice(s). Subtask 12-36-29-410-074
D. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the left MLG door (Ref. TASK 32-12-00-410-001).
(3)
Close the access door 197CB.
(4)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
TASK 12-36-29-170-005
Flushing of the Yellow Hydraulic System of the Power Transfer Unit (PTU) 1088GM
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.
_______
R WARNING : DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:
_______ R - FLUSH IT AWAY WITH CLEAN WATER R - GET MEDICAL AID.
1. Reason for the Job
__________________
To flush the Yellow hydraulic system after a failure in that part of the PTU 1088GM
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific adaptor
No specific blanking plugs
No specific hydraulic power cart
No specific safety barriers
No specific union
No specific warning notices
No specific access platform 2.5 m (8 ft. 2 in.)
No specific containers 5 l (1.3208 USgal)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
from the External Power 29-00-00-910-002 Safety Procedures of the Hydraulic System 29-10-00-863-002 Pressurize the Yellow Hydraulic System 29-10-00-864-002 Depressurize the Yellow Hydraulic System 29-13-44-610-001 Servicing of the LP-Filter (3002GM) 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 32-12-00-010-001 Open the Main Gear Doors for Access 32-12-00-410-001 Close the Main Gear Doors after Access 12-36-29-991-005 Fig. 305
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