(b)
The FWD cargo-compartment door 825 is open (Ref. TASK 52-30-00-860-001),
(c)
The access platform is in position at the FWD cargo-compartment door 825,
(d)
The accesss panel 131PW is removed (Ref. TASK 25-54-12-000-001).
Subtask 21-63-18-865-051
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
122VU AIR COND/ZONE TEMP CTL/28VDC/SYS2 4HK V20 122VU AIR COND/ZONE TEMP CTL/28VDC/SYS1 3HK V19 122VU AIR COND/ZONE TEMP CTL/115VAC/SYS2 2HK V18 122VU AIR COND/ZONE TEMP CTL/115VAC/SYS1 1HK V17
4. Procedure
_________
(Ref. Fig. 401/TASK 21-63-18-991-001) Subtask 21-63-18-420-050
A. Installation of the Duct-Overheat Temperature Sensor
(1)
Clean the component interface and/or the adjacent area.
(2)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(3)
Make sure that the O-ring (3) is in a good condition. If necessary replace the O-ring (3).
(4)
Install the O-ring (3) and the duct overheat-temperature sensor (1) in the air supply duct (4).
(5)
TORQUE the duct overheat-temperature sensor (1) to between 0.5 and
1.0 m.daN (44.24 and 88.49 lbf.in).
(6)
Safety with MISCELLANEOUS (Material No. 19-009).
(7)
Remove the blanking cap from the electrical connector (2).
(8)
Make sure that the electrical connectors are clean and in the correct condition.
(9)
Connect the electrical connector (2).
Subtask 21-63-18-865-052
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HK, 2HK, 3HK, 4HK.
Subtask 21-63-18-710-050
C. Do the operational test of the cockpit and cabin temperature control system (Ref. TASK 21-63-00-710-004).
5. Close-up
________ Subtask 21-63-18-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the access panel 131PW (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 21-63-18-862-050
B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
PRESSURE SWITCH - HOT AIR (26HK) - REMOVAL/INSTALLATION
_______________________________________________________ TASK 21-63-19-000-001 Removal of the Hot Air-Pressure Switch 26HK 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 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
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
External Power 25-54-12-000-001 Removal of the FWD Cargo Compartment Partition FR34 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the
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