(2)
Remove the temporary attachment from the disconnected electrical connector (2).
(3)
Remove the blanking caps from the electrical connectors.
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(4) Make sure that the electrical connectors are clean and in the correct
condition.
(5) Connect the electrical connector (2) to the trim air valve (1). Subtask 21-63-00-865-069
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HK, 2HK, 3HK, 4HK.
Subtask 21-63-00-810-050
C. Do the trouble shooting of the trim air valve (Ref. TSM ATA 21) and do the applicable corrective maintenance procedure(s).
5. Close-up
________ Subtask 21-63-00-410-056
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the access panels 132PW and 131NW (Ref. TASK 25-54-12-400-001).
(3)
Remove the access platform(s).
(4)
Close the FWD cargo-compartment door 825 (Ref. TASK 52-30-00-860-002).
Subtask 21-63-00-862-059
B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
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TASK 21-63-00-040-002 Deactivation of the Hot-Air Pressure-Regulating Valve 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
__________________
Refer to the MMEL TASK: 21-63-03 a)
Cockpit and Cabin Temperature Control
Hot Air Pressure Regulating Valve
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
No specific circuit breaker(s) safety clip(s)
No specific access platform 2 m (6 ft. 7 in.)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
No specific lockwire-corrosion resistant steel 0.8 mm (0.0314 in.)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 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 21-63-00-991-003 Fig. 402
3. Job Set-up
__________
(Ref. Fig. 402/TASK 21-63-00-991-003)
Subtask 21-63-00-861-052
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
Subtask 21-63-00-010-051
B. Get Access
WARNING : DO NOT OPEN OR GO NEAR PRESSURE-SEALED DOORS WHEN THE AIRCRAFT
_______ IS PRESSURIZED. A PRESSURE-SEALED DOOR THAT OPENS WHEN THE AIRCRAFT IS PRESSURIZED.
-WILL CAUSE EXPLOSIVE DECOMPRESSION.
-CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAUSE DAMAGE TO THE AIRCRAFT/EQUIPMENT.
(1)
Open the FWD cargo-compartment door 825 (Ref. TASK 52-30-00-860-001).
(2)
Put the access platform at the FWD cargo-compartment door 825.
(3)
Remove the access panel 131PW (Ref. TASK 25-54-12-000-001).
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INTENTIONALLY BLANK
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Hot-Air Pressure-Regulating Valve Figure 402/TASK 21-63-00-991-003
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