Subtask 12-36-29-860-090
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. 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. 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. TASK 29-14-00-614-002).
(4)
De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
Subtask 12-36-29-410-084
B. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
CLose the left main landing gear door (Ref. TASK 32-12-00-010-001).
(3)
Close the access door 197CB.
TASK 12-36-29-615-002
Clean the Fluid in the Yellow Hydraulic System
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES._______
R R R 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.
1. Reason for the Job__________________
To remove water, chlorinated solvent and particles from the hydraulic fluid of the Yellow hydraulic system.
2. Job Set-up Information______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific HSPA181-380J container 5.0 l (1.3208 USgal)1 HYDRAULIC PURIFIER
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R Material No. 02-003 F NSA 307110 TYPE 4 HYDRAULIC FLUID (PHOSPHATE ESTER BASE) (Ref. 20-31-00)
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 29-10-00-864-002 Depressurize the Yellow 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) 12-36-29-991-017 Fig. 317
3. Job Set-up
__________
Subtask 12-36-29-860-091
A. Aircraft Maintenance Configuration
(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(2)
Depressurize the Yellow hydraulic system (Ref. TASK 29-10-00-864-002).
(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 Yellow 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 12-36-29-010-098
B. Get Access
(1)
Open the access door 198CB.
(2)
Open the access door 196BB.
4. Procedure
_________
(Ref. Fig. 317/TASK 12-36-29-991-017) Subtask 12-36-29-615-051
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