VALVE - PRESSURE REGULATING (11HC) - REMOVAL/INSTALLATION
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TASK 21-43-52-000-001
Removal of the Pressure Regulating Valve - Aft Cargo-Compartment Heating
WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM
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FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE.
HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
1.
Reason for the Job
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Self Explanatory
2.
Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific blanking caps
No specific blanking plugs
No specific circuit breaker(s) safety clip(s)
No specific access platform 2 m (6 ft. 7 in.)
B. Referenced Information
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REFERENCE DESIGNATION
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24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power
53-35-13-000-002 Removal of the Quick-Release Access Panels from the Belly Fairing Structure
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
21-43-52-991-001 Fig. 401
**ON A/C 301-399,
21-43-52-991-001-A Fig. 401A **ON A/C ALL
3. Job Set-up
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Subtask 21-43-52-861-050
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002). Subtask 21-43-52-865-050
B. Open, safety and tag this(these) circuit breaker(s):
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PANEL DESIGNATION IDENT. LOCATION
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R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
122VU AIR COND/AFT CARGO VENT/FAN 30HN S22 R **ON A/C ALL
Subtask 21-43-52-865-055
C. Open, safety and tag this(these) circuit breaker(s):
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PANEL DESIGNATION FIN LOCATION
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122VU AIR COND/AFT CARGO VENT/CTL AND/MONG 31HN 20 S
or alternative location :-
49VU AIR COND/AFT CARGO/VENT/CTL & MONG 31HN 07 C
Subtask 21-43-52-941-050
D. Safety Precautions
(1)
On the panel 30VU:
(a)
Make sure that:
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the APU BLEED pushbutton switch is in the off position (the ON legend is off) and,
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the ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in the off position (the OFF legends are on).released.
(b)
Put a warning notice in position to tell persons not to operate these switches.
(2)
On the HP ground connector put a warning notice in position to tell persons not to supply the ground air.
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
Subtask 21-43-52-010-050
E. Get Access
(1) Put the access platform in position at the access panel 197BB.
(2) Remove the access panel 197BB (Ref. TASK 53-35-13-000-002).
**ON A/C 301-399,
Subtask 21-43-52-010-050-A
E. Get Access
(1) Put the access platform in position at the access panel 197KB.
(2) Remove the access panel 197KB (Ref. TASK 53-35-13-000-002).
**ON A/C ALL
4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
(Ref. Fig. 401/TASK 21-43-52-991-001)
**ON A/C 301-399,
(Ref. Fig. 401A/TASK 21-43-52-991-001-A)
Pressure Regulating Valve - Component Location Figure 401/TASK 21-43-52-991-001- 12 (SHEET 1)
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 21-43-52Page 404 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1
Pressure Regulating Valve - Component Location Figure 401/TASK 21-43-52-991-001- 22 (SHEET 2)
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 21-43-52Page 405 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1R Pressure Regulating Valve - Component Location R Figure 401A/TASK 21-43-52-991-001-A12 (SHEET 1)
R 1EFF : 301-399, 1 21-43-52Page 406 1 1 May 01/04 1 1 1CES 1R Pressure Regulating Valve - Component Location R Figure 401A/TASK 21-43-52-991-001-A22 (SHEET 2)
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