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 3. Job Set-up
__________ Subtask 52-31-11-010-056
 A. Get Access
 (1)
 Open the FWD cargo compartment door (referred to as cargo door) (Ref. TASK 52-30-00-860-001).

 (2)
 Remove the door lining and the insulation mats from the cargo door (Ref. TASK 52-31-13-000-001) to clean the internal structure.

 (3)
 Put the access platform in position of the cargo door.

 (4)
 Remove the access panel 825AR to clean the door locking mechanism(s) and the adjacent structure.

 4. Procedure
_________ Subtask 52-31-11-160-050
 A. Cleaning of the Structure of the Cargo Door and the Related Vent Door
 (1)
 Remove all loose particles and unwanted material with a vacuum cleaner and a dry brush.

 (2)
 Clean the painted components of the structure of the cargo door and the vent door as follows:

 (a)
 Use a lint-free cloth or a brush and carefully clean the internal structure with CLEANING AGENTS (Material No. 11-004).

 (b)
 Carefully clean the adjacent structure of the door locking mechanism with a lint-free cloth and CLEANING AGENTS (Material No. 11-004).

 (c)
 Carefully clean the outer skin of the cargo door with a lint-free cloth and CLEANING AGENTS (Material No. 11-004).

 NOTE : Make sure that the cleaning agent does not dry on the
____
 surface.

 (3)
 Dry the cleaned structure with a dry and clean lint-free cloth or with dry, compressed air.

 (4)
 Make sure that the corners and the recesses are clean of all unwanted and loose material.

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 (5) Examine the drain valves and drain holes to make sure that they are clean and not blocked.
 (6) Remove remaining dirt and all old sealants with a wood or plastic scraper.
 (7) Apply SPECIAL MATERIALS (Material No. 05-027) to the internal structure of the cargo door.
 (8) Apply SPECIAL MATERIALS (Material No. 05-005) to the vertical and horizontal edge members of the cargo door. 
R  Subtask 52-31-11-160-051 
R  B. Cleaning of the six sight glasses. 
R  NOTE : Do not rub the surfaces with dry cloth.____ 
R  (1) On the access panel 825AR. 
R  (2) Clean the windows with a weak soap solution. 
R R  (3) Dry the windows with a lint-free cloth MISCELLANEOUS (Material No. 19-003). 
R R R  (4) If more cleaning is required, apply the CLEANING AGENTS (Material No. 11-019) to clean the windows and dry them with a lint-free cloth MISCELLANEOUS (Material No. 19-003).
 Subtask 52-31-11-140-050 
R  C. Cleaning of the Door Seal
 (1) Clean the door seal with a weak soap solution.
 (2) Dry the cleaned door seal with a lint-free cloth or with dry compressed air.
 (3) Apply MISCELLANEOUS (Material No. 19-004) to the door seal.

 Subtask 52-31-11-110-050 R D. Cleaning of the Door Locking Mechanism and the Electrical Components
 (1)
 Clean the door locking mechanism as follows:

 (a)
 Clean the subsequent components with lint-free cloth or a brush and CLEANING AGENTS (Material No. 11-004)

 -
the locking handle with the related flap mechanism,

 -
the locking units,

 -
the drift pin mechanism,

 -
the interlock mechanism,

 -
the vent door mechanism,

 -
the locking and the safety shaft.

 (b)
 Dry the cleaned components with a dry and clean lint-free cloth.

 (c)
 Clean the related bearings of the locking and safety shafts with a dry and clean lint-free cloth.

 (d)
 Apply SPECIAL MATERIALS (Material No. 05-027) to the cleaned components of the door locking mechanism.

 (2)
 Clean the electrical components as follows:

 (a)
 Clean the electrical cable looms with CLEANING AGENTS (Material No. 11-002) and a lint-free cloth.

 (b)
 Clean all electrical connectors, the terminal block 7526VT (7516VC) and the proximity switches 28WV and 5MJ with ANTI-ICING AND DE-ICING MATERIALS (Material No. 10-002) and lint-free cloth.

 Subtask 52-31-11-370-050
　
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