-
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 Green hydraulic system after a failure in that part of the THS actuator 9CE.
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 m (6 ft. 7 in.)
No specific access platform 4.0 m (13 ft. 1 in.)
No specific containers 5 l (1.3208 USgal)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
No specific corrosion-resistant steel lockwire 0.8 mm (0.032 in) dia
C. 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 29-10-00-863-001 Pressurize the Green Hydraulic System 29-10-00-864-001 Depressurize the Green Hydraulic System 29-11-44-610-001 Servicing of the LP-Filter (1002GM) 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 12-36-29-991-012 Fig. 312
3. Job Set-up
__________
(Ref. Fig. 312/TASK 12-36-29-991-012)
Subtask 12-36-29-860-083
A. Aircraft Maintenance Configuration
(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(2)
Depressurize the Green hydraulic system (Ref. TASK 29-10-00-864-001).
(3)
Depressurize the reservoir of the Green hydraulic system (Ref. TASK 29-14-00-614-001).
(4)
De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
(5)
Put the warning notices in position.
(6)
Put the safety barriers in position.
Green Hydraulic System of the THS Actuator 9CE - Flushing Schematic
Figure 312/TASK 12-36-29-991-012
(7)
Put the access platform in position at the Zone 310. Subtask 12-36-29-010-095
B. Get Access
(1)
Open the access door 312AR.
(2)
Open the left MLG door (Ref. TASK 32-12-00-010-001).
(3)
Open the access door 197CB. Subtask 12-36-29-860-084
C. Preparation for the Flushing Procedure
(1)
Put the access platform in position at Zone 147.
(2)
Put the containers in position to collect the hydraulic fluid below:
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the THS actuator 9CE,
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the LP manifold 1003GM.
(3)
Remove and discard the lockwire from the hydraulic connections of the valve block (of the Green hydraulic system) at the THS actuator 9CE.
(4)
Disconnect the pressure line from the valve block.
(5)
Disconnect the return line from the valve block.
(6)
Disconnect the return line from the LP manifold 1003GM.
(7)
Connect the pressure line to the return line at the THS actuator 9CE with an union.
CAUTION : MAKE SURE THAT THE FLOW RATE AND THE SUPPLY PRESSURE ON THE
_______ GROUND HYDRAULIC CART ARE SET TO A MINIMUM.
(8)
Put the hydraulic power cart in position as necessary.
(9)
Connect the pressure hose of the hydraulic power cart to the delivery connector 1008GM with an adaptor.
(10)
Connect the return hose of the hydraulic power cart to the return line at the LP manifold 1003GM with an adaptor.
