Piston-Type Drain Valves Figure 603A/TASK 53-19-00-991-003-B 
R  EFF :  151-199, 401-499,  53-19-00 Page 612 Aug 01/05
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 Piston-Type Drain Valves Figure 603B/TASK 53-19-00-991-003-A 
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R **ON A/C ALL
 (1) Do the operational check of the piston-type drain valves in lower fuselage shell:
 (a)
 Make sure that the basic valves are not blocked. Remove any blockage.

 (b)
 Carefully push a PROBE - NON METALLIC, FLEXIBLE into the center of each basic valve and make sure that the valves are open.

 5. Close-up
________
 Subtask 53-19-00-860-050

 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Remove the access platform(s).

 (3)
 Remove the ground support and maintenance equipment, the special and standard tools and all other items.

 DRAINS - NOSE FORWARD FUSELAGE - REMOVAL/INSTALLATION
_____________________________________________________
R **ON A/C 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499,
 TASK 53-19-41-000-001
 Removal of the Collector Grid and the Container
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific access platform 1.50 m (4 ft. 11 in.)
 No specific access platform 3.50 m (11 ft. 6 in.)

 B. Referenced Information -------------------------------------------------------------------------------
REFERENCE DESIGNATION -------------------------------------------------------------------------------24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
 External Power 52-10-00-010-001 Opening of the Passenger/Crew Door R **ON A/C 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499, Post SB 53-1143 For A/C 001-003, 53-19-41-991-001 Fig. 401
 EFF : ALL
53-19-41Page 401

R **ON A/C 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499,

 3. Job Set-up
__________
R  **ON A/C 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499, Post SB 53-1143 For A/C 001-003, Subtask 53-19-41-861-050
 A. Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 Subtask 53-19-41-010-050
 B. Get Access
 (1)
 Put an access platform in position at zone 831.

 (2)
 Open the FWD passenger/crew door 831 (Ref. TASK 52-10-00-010-001).

 (3)
 Put an access platform in position at zone 812.

 (4) Open the avionics-compartment access door 812. R **ON A/C 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499,
 4. Procedure
_________
R  **ON A/C 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499, Post SB 53-1143 For A/C 001-003, Subtask 53-19-41-020-050
 A. Removal of the Collector Grid and the Container
 (Ref. Fig. 401/TASK 53-19-41-991-001)

 (1)
 Remove the screws (1).

 (2)
 Remove the collector grid (2).

 (3)
 Remove the clamps (7).

 (4)
 Disconnect the ducts (8).

R  EFF : 001-049, 054-099, 101-149, 151-199, 53-19-41Page 402 201-299, 301-399, 401-499, Aug 01/05
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 Collector Grid and Container Figure 401/TASK 53-19-41-991-001 
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 (5)
 Remove the screws (6) and the washers (5).

 (6)
 Remove the screws (4) and the washers (3).

 (7)
 Remove the container (9).

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R  **ON A/C 001-049, 054-099, 101-149, 151-199, 201-299, 301-399, 401-499,
 TASK 53-19-41-400-001
 Installation of the Collector Grid and the Container
 1.
 Reason for the Job

__________________
 Self Explanatory
　
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