VALVE - BLEED PRESSURE REGULATOR (4001HA) - REMOVAL/INSTALLATION
________________________________________________________________
TASK 36-11-52-000-042
Removal of the Bleed Pressure Regulator Valve (4001HA)
WARNING : BE CAREFUL WHEN YOU WORK ON THE ENGINE COMPONENTS IMMEDIATELY AFTER
_______ THE ENGINE IS SHUTDOWN. THE ENGINE COMPONENTS CAN STAY HOT FOR UP TO ONE HOUR.
WARNING : MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START
_______ WORK ON THE PNEUMATIC SYSTEM.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking plugs No specific circuit breaker(s) safety clip(s) No specific protective covers No specific warning notice No specific access platform 0.5 m (1 ft. 8 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
External Power 71-13-00-010-040 Opening of the Fan Cowl Doors 78-30-00-481-041 Make the Thrust Reverser Unserviceable for
Maintenance 78-36-00-010-040 Opening of the Thrust Reverser Doors 36-11-52-991-300 Fig. 401
3. Job Set-up
__________
Subtask 36-11-52-861-057
A. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 36-11-52-941-067
B. Safety Precautions
(1)
Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(2)
On the AIR COND panel 30VU:
-make sure that the ENG 1(2) BLEED pushbutton switch is released
(the OFF legend is on), R - make sure that the APU BLEED pushbutton switch is released (the ON R legend is off),
-put a warning notice to tell persons not to operate the pneumatic system.
(3)
On the ENG panel 115VU:
-put a warning notice to tell persons not to start the engine 1(2).
(4)
On the HP ground connector:
-Put a warning notice to tell persons not to pressurize the pneumatic system.
(5)
On the ENG section of the maintenance panel 50VU:
-make sure that the ON legend of the ENG/FADEC GND PWR 1(2) pushbutton switch is off,
-put a warning notice to tell persons not to energize the FADEC 1(2).
Subtask 36-11-52-865-066
C. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR BLEED/ENG 1/CTL 3HA1 D12 49VU AIR BLEED/ENG 1/MONG 2HA1 D11 122VU AIR BLEED/ENG 2/CTL 3HA2 Z23 122VU AIR BLEED/ENG 2/MONG 2HA2 Z22
Subtask 36-11-52-010-051
D. Get Access
(1) Open the fan cowl doors (Ref. TASK 71-13-00-010-040):
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(2)
Put the access platform in position. Subtask 36-11-52-040-053
E.
Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041). Subtask 36-11-52-010-064
F. Open the thrust reverser doors (Ref. TASK 78-36-00-010-040):
FOR 1000EM1
451AL, 452AR
FOR 1000EM2
461AL, 462AR
4. Procedure
_________
(Ref. Fig. 401/TASK 36-11-52-991-300) Subtask 36-11-52-020-055
A. Removal of the Bleed Pressure-Regulator Valve
(1)
Disconnect the electrical connector 4001HA-A from the bleed pressure-regulator valve (30).
(2)
Disconnect the sense hose (35) from the bleed pressure-regulator valve (30).
(3)
Disconnect the HP sense tube (25) from the bleed pressure-regulator valve (30).
(4)
Remove the couplings (20) and the E-seals (15) that attach the valve
(30) to the interface duct (5) and the mid stage tee-duct (10).
(5)
Put blanking plugs on the two ends of the bleed pressure-regulator valve (30) and on the ducts (5) and (10).
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