4. Procedure
_________
(Ref. Fig. 401/TASK 21-63-52-991-001) Subtask 21-63-52-020-050
A. Removal of the Pressure Regulating Valve
(1)
Disconnect the electrical connectors (1), (2) and (3).
(2)
Put blanking caps on the disconnected electrical connectors.
(3)
Disconnect the sense lines (4) and (5).
(4)
Put blanking plugs on the disconnected line ends.
(5)
Remove the nut (10), the washer (9), the screw (6), the washer (7) and disconnect the bonding strap (8).
(6)
Remove the clamps (26) and (28) and the duct assembly (27).
(7)
Remove the O-ring (25).
(8)
Put blanking plugs on the open ends of the duct flange (29) and the duct assembly (27).
(9)
Hold the pressure regulating valve (30) and remove the clamp (31).
(10)
Remove the pressure regulating valve (30) and the O-ring (25).
(11)
Put blanking plugs on the open ends of the duct flange (24) and the pressure regulating valve (30).
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Pressure Regulating Valve
Figure 401/TASK 21-63-52-991-001- 12 (SHEET 1)
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1 1 Feb 01/98
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Pressure Regulating Valve
Figure 401/TASK 21-63-52-991-001- 22 (SHEET 2)
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TASK 21-63-52-400-001 Installation of the Pressure Regulating Valve 14HK WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM
_______
FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE.
HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform 2 m (6 ft. 7 in.) R No specific Torque Wrench : range 0.00 to 1.20 m.daN R (0.00 to 9.00 lbf.ft)
B. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
25 O-rings 21-63-03 05 -090A 25 O-rings 21-63-03 05A-090 C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-33-21-618-001 Pre-conditioning through the HP Ground Connection 12-33-21-618-001 Pre-conditioning with the APU 20-28-00-912-004 Electrical Bonding of Components With Conductive
Bolts and Screws and Bonding Straps in the Fuselage R and in the Wings (this does not include the tanks)-21-63-00-720-001 Functional Test of the Cockpit and Cabin Temperature Control without CFDS/MCDU. 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
from the External Power 25-54-12-000-001 Removal of the FWD Cargo Compartment Partition FR34 25-54-12-400-001 Installation of the FWD Cargo Compartment Partition
FR34 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 21-63-52-991-001 Fig. 401
3. Job Set-up
__________
Subtask 21-63-52-860-050
A. Aircraft Maintenance Configuration
(1) Make sure that:
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