1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific warning notices
 B. Consumable Materials
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
R Material No. 02-003 F NSA 307110 TYPE 4 HYDRAULIC FLUID (PHOSPHATE ESTER BASE) (Ref. 20-31-00) Material No. 05-004 USA MIL-L-25567 TYPE I OXYGEN LEAK DETECTOR (Ref. 20-31-00)
 C. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
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29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
 Configuration before Maintenance Action 29-00-00-910-002 Safety Procedures of the Hydraulic System 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
 the Ground Connector
 29-14-43-991-001 Fig. 401

 3. Job Set-up
__________
 Subtask 29-14-43-860-051
 A. Aircraft Maintenance Configuration
 WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
 (1)
 Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).

 (2)
 Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration. (Ref. TASK 29-00-00-864-001).

 (3)
 Make sure that the reservoirs of the Green, Blue and Yellow hydraulic systems are depressurized (Ref. TASK 29-14-00-614-001).

 (4)
 Make sure that the warning notices are in position to tell persons not to pressurize the Green, Blue and Yellow hydraulic systems:

 -in the cockpit on the hydraulic section 40VU of the overhead panel,
 - on the ground service panel of the Green, Blue and Yellow hydraulic systems.
 (5) Make sure that the access panel 195BB is open.
 Subtask 29-14-43-865-051
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU HYD/HYD PWR/B WARN/& CTL 2702GJ C12 121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41 121VU HYDRAULIC/HYD POWER/Y 3803GX N30 121VU HYDRAULIC/G HYD/PUMP ENG1/CTL 1701GK R35 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34 123VU B HYD/ELEC PUMP 2701GJ AB09 123VU Y HYD/ELEC/PUMP 3802GX AB06
R 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03 4. Procedure

_________
 (Ref. Fig. 401/TASK 29-14-43-991-001) Subtask 29-14-43-420-050
 A. Installation of the Pressure Reducing Valve
 (1)
 Remove the blanking plugs from the pressure reducing valve (1) and the reservoir pressurization unit (4).

 (2)
 Apply HYDRAULIC FLUIDS (Material No. 02-003) to the O-ring (3).

 (3)
 Put the O-ring (3) in position on the pressure reducing valve (1).

 (4)
 Put the pressure reducing valve (1) in position and install the bolts (2).

 Subtask 29-14-43-790-050
 B. Test
 (1) Pressurize the reservoirs of the Green, Blue and Yellow hydraulic systems (Ref. TASK 29-14-00-614-002).
 NOTE : Monitor the pressure gage 1383GM, 2383GM or 3383GM and make
____ sure that the pressure does not become more than 51.5 psi.
 (2) Apply SPECIAL MATERIALS (Material No. 05-004) to the interface of the pressure reducing valve (1) and the reservoir pressurization unit (4) and make sure that there are no leaks.
 5. Close-up
________ Subtask 29-14-43-860-052
 A. Put the aircraft back to the serviceable condition.
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Remove the warning notices from the cockpit and from the ground serice panels of the Green, Blue and Yellow hydraulic systems.

 Subtask 29-14-43-410-050
 B. Close the access panel 195BB.

 Subtask 29-14-43-865-052
 C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD, 1701GK, 1702GK, 2701GJ, 2702GJ, 3801GX, 3802GX, 3803GX.
　
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