-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-33-21-618-001 Pre-conditioning through the HP Ground Connection 12-33-21-618-001 Pre-conditioning with the APU 20-28-00-912-004 Electrical Bonding of Components With Conductive
 Bolts and Screws and Bonding Straps in the Fuselage and in the Wings (this does not include the tanks)-21-63-00-710-004 Operational Test of the Cockpit and Cabin Temperature Control with CFDS/MCDU 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
 **ON A/C 001-049, 051-061, 101-105, 151-152, 201-204,
 21-63-51-991-001 Fig. 401
R **ON A/C 062-099, 106-149, 153-199, 205-299, 301-399, 401-499,
 21-63-51-991-001-A Fig. 401A **ON A/C ALL

 3. Job Set-up
__________
 Subtask 21-63-51-860-050

 A. Aircraft Maintenance Configuration
 (1) Make sure that:
 (a)
 The aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).

 (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 access panels 131NW and 131PW are removed (Ref. TASK 25-54-12-000-001).

 Subtask 21-63-51-865-051
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R **ON A/C 401-499,
 49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC 52HH D08 R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 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

R  -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------**ON A/C 401-499,
R R  122VU AIR COND/TEMP CTL SYS 2/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 2/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 1/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 1/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/115VAC 122VU AIR COND/TEMP CTL SYS 1/CHAN B/115VAC  53HH 55HH 49HH 51HH 56HH 54HH 50HH  W22W21X22X21 Y21Y20Y18 
**ON A/C ALL
 4. Procedure_________
 **ON A/C 001-049, 051-061, 101-105, 151-152, 201-204,
 (Ref. Fig. 401/TASK 21-63-51-991-001) 
R  **ON A/C 062-099, 106-149, 153-199, 205-299, 301-399, 401-499,
 (Ref. Fig. 401A/TASK 21-63-51-991-001-A)
 **ON A/C ALL
 Subtask 21-63-51-420-050
 A. Installation of the Trim Air Valve
 (1) FOR 11HK
 (a) Remove the blanking plugs from the duct flange (17), the trim air valve (8) and the duct assembly (11),
 (b) Clean the component interface and/or the adjacent area.
 (c) Make sure that the parts retained from the removed component are clean and in the correct condition.

 (d)
 Make sure that the O-rings (15) are in a good condition. If necessary replace the O-rings (15).

 (e)
 Put the O-ring (15) in position on the trim air valve (8).

 (f)
 Put the trim air valve (8) in position on the duct flange (17) and install the clamp (14).

 (g)
 Make sure that the trim air valve is in the correct position.

 (h)
 TORQUE the clamp (14) to between 0.491 and 0.546 m.daN (43.45 and

 48.31 lbf.in).
 NOTE : The electrical actuator of the trim air valve (8) must

____
 face in a forward direction.

 (i)
 Put the O-ring (15) in position on the duct assembly (11).

 (j)
 Move the duct assembly (11) downwards and into position on the trim air valve (8).

 (k)
 Install the clamp (22).

 (l)
 TORQUE the clamp (22) to between 0.491 and 0.546 m.daN (43.45 and
　
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