EXCHANGER - BLEED AIR PRECOOLER (7150HM1,7150HM2) - REMOVAL/INSTALLATION
________________________________________________________________________ TASK 36-11-42-000-001 Removal of the Bleed-Air Precooler Exchanger (7150HM1,7150HM2) WARNING : MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START
_______ WORK ON THE PNEUMATIC SYSTEM.
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.
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 warning notice No specific access platform 3.4 m (11 ft. 2 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 36-11-42-991-001 Fig. 401
3. Job Set-up
__________ Subtask 36-11-42-861-051
A. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 36-11-42-941-051
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 36-11-42-010-050
C. Get Access
(1)
Put the access platform in position below the engine.
(2)
Open the access panel:
FOR 7150HM1
413DL
FOR 7150HM2
423DL
4. Procedure
_________
(Ref. Fig. 401/TASK 36-11-42-991-001) Subtask 36-11-42-020-050
A. Removal of the Bleed-Air Precooler Exchanger
(1)
Remove the clamps (1) and (4).
(2)
Remove the precooler (5) with the handles (6) and (7).
(3)
Remove the seals (2) and (8) and discard them.
(4)
Put blanking plugs on the disconnected line ends.
Bleed Air Precooler Exchanger
Figure 401/TASK 36-11-42-991-001
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TASK 36-11-42-400-001
Installation of the Bleed-Air Precooler Exchanger (7150HM1,7150HM2)
WARNING : MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START
_______
WORK ON THE PNEUMATIC SYSTEM.
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.
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 notice
No specific access platform 3.4 m (11 ft. 2 in.)
B. Expendable Parts
-------------------------------------------------------------------------------
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