C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-12-29-611-001 Fill the Hydraulic Fluid Reservoir with a Hand Pump 12-32-29-281-001 Hydraulic Fluid Sample of Green,Blue and Yellow Systems for Analysis 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 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 29-10-00-864-001 Depressurize the Green Hydraulic System 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
the Ground Connector 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU) 29-23-00-860-002 Connection of the Isolation Coupling of the Power
Transfer Unit (PTU) 32-12-00-010-001 Open the Main Gear Doors for Access 12-36-29-991-017 Fig. 317
3. Job Set-up
__________
Subtask 12-36-29-860-089
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)
To isolate the PTU:
-disconnect the isolation coupling of the PTU (Ref. 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. 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. TASK 29-14-00-614-002).
(6)
Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 12-36-29-010-097
B. Get Access
(1)
Open the left main landing gear door (Ref. TASK 32-12-00-010-001).
(2)
Open the access door 197CB.
4. Procedure
_________
(Ref. Fig. 317/TASK 12-36-29-991-017) Subtask 12-36-29-615-050
A. Clean the Fluid in the Green Hydraulic System WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE
_______
LANDING GEAR.
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES
_______ ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
(1)
Prepare the HYDRAULIC PURIFIER (HSPA181-380J) as given in the subsequent steps:
(a)
Make sure that the hydraulic fluid content indicator (2) shows the maximum fill level.
-If necessary fill the reservoir of the HYDRAULIC PURIFIER (HSPA181-380J) with HYDRAULIC FLUIDS (Material No. 02-003) through the fill connection (21).
(b)
Connect the electrical connection (20) of the HYDRAULIC PURIFIER (HSPA181-380J).
(c)
Set the main switch (15) to the ON position:
-The white power on light (19) comes on.
(d)
Make sure that the red light (18) does not come on.
-If the red light (18) comes on, the rotary direction of the internal electrical pump is not correct. Change two phases of the electrical connection.
(e)
Turn the switch (14) to the START position.
(f)
Set the switch (16) to the ON position.
(g)
Fill the reservoir of the HYDRAULIC PURIFIER (HSPA181-380J) with HYDRAULIC FLUIDS (Material No. 02-003) through the fill connection (21) until the hydraulic fluid quantity is in the middle between the MIN and MAX mark of the hydraulic fluid content indicator (2).
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