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25-55-12-000-002 Removal of the Ceiling Panels in the AFT Cargo Compartment - FR59/FR65 25-55-12-000-003 Removal of the Sidewall Panels in the AFT Cargo Compartment - FR59/FR65 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the
 Yellow Electric Pump 53-32-12-000-002 Removal of the Cabin Floor Panels 21-20-00-991-001 Fig. 201 21-20-00-991-002 Fig. 202 21-20-00-991-003 Fig. 203
 3. Job Set-up
__________
 Subtask 21-20-00-861-050
 A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
 Subtask 21-20-00-865-050
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU AIR COND/RECIRC FAN/R/SPLY 3HG W18 122VU AIR COND/RECIRC FAN/L/SPLY 1HG X18
 Subtask 21-20-00-941-050
 C. Safety Precautions
 (1)
 On the panel 30VU:

 (a)
 Make sure that:

 -
the APU BLEED pushbutton switch is in the off position (the ON legend is off) and,

 -
the ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in the off position (the OFF legends are on).

 

 (b)
 Put a warning notice in position to tell persons not to operate these pushbutton switches.

 

 (2)
 On the HP and the LP ground connector put a warning notice in position to tell persons not to supply the ground air.

 

 Subtask 21-20-00-010-050
 D. Get Access
 (Ref. Fig. 201/TASK 21-20-00-991-001)

 (1)
 For the cabin area supply and the cargo-compartment ventilation ducts in the FWD cargo compartment area:

 (a)
 Put the platform in position at the FWD cargo-compartment door

 825.

 (b)
 Open the FWD cargo-compartment door 825 (Ref. TASK 52-30-00-860-001).

 (c)
 Remove the access panels as necessary (Ref. TASK 25-54-12-000-001), (Ref. TASK 25-54-12-000-002) or (Ref. TASK 25-54-12-000-003) .

 

 (2)
 For the cabin area supply ducts in the MID cabin and the wing box area:

 (a) Remove the cabin floor panels as necessary (Ref. TASK 53-32-12-000-002).

 (3)
 For the cabin area supply and the cargo-compartment ventilation ducts in the AFT cargo compartment area:

 (a)
 Put the platform in position at the AFT cargo-compartment door

 826.

 (b)
 Open the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-001).

 (c)
 Remove the access panels as necessary (Ref. TASK 25-55-11-000-001), (Ref. TASK 25-55-11-000-002), (Ref. TASK 25-55-11-000-003), (Ref. TASK 25-55-12-000-001), (Ref. TASK 25-55-12-000-002) or (Ref. TASK 25-55-12-000-003) .

 

 (4)
 For the riser ducts in the cabin area:

 (a) Remove the upper and the lower sidewall panels as necessary (Ref. TASK 25-23-44-000-001) and (Ref. TASK 25-23-43-000-001).

 Distribution Ducts Location
 Figure 201/TASK 21-20-00-991-001
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 4. Procedure
_________ Subtask 21-20-00-020-050
 A. Removal of an Air-Conditioning Distribution Duct
 (1)
 Applicable on duct connection method:
 (Ref. Fig. 202/TASK 21-20-00-991-002)

 (a)
 Remove the clamps (2) and the bellows (3) or,

 (b)
 Remove the nuts (4), the screws (6) and the seal (5) or,

 (c)
 Remove the clamp (2) and the hose (10) or,

 (d)
 Remove the clamps (2) and the sleeve (8).

 

 (2)
 Applicable on duct attachment method:
 (Ref. Fig. 203/TASK 21-20-00-991-003)

 (a)
 Remove the screws (20), the washers (21) and the duct (1).

 (b)
 Remove the clamp (22) and the duct (1).

 

 (3)
 Where applicable make identification marks on the restrictors (9) and their positions in the duct (1).

 NOTE : This will assist in the correct position of the restrictors on
____
 installation.

 (4) Put protective covers on the open ends of the ducts and the related connections.

 Examples of Distribution Duct Connections
 Figure 202/TASK 21-20-00-991-002
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