R 1EFF : 001-049, 052-061, 101-103, 201-203, 1 30-71-51Page 409 1 1 May 01/05 1 1 1CES 1

R  Drain Mast 4DU/14DU/24DU 
R  Figure 401A/TASK 30-71-51-991-001-B 
R 1EFF :  051-051,  1  30-71-51 Page 410 
1  1  May 01/05
 1  1
 1CES  1

 Drain Mast 4DU/14DU Figure 401B/TASK 30-71-51-991-001-A
R 1EFF : 062-099, 104-149, 151-199, 204-299, 1 30-71-51Page 411 1301-399, 401-499, 1Aug 01/05 1 1 1CES 1

 (8) Carefully remove the drain mast (1) from the fuselage. R **ON A/C 062-099, 104-149, 151-199, 204-299, 301-399, 401-499,
 Subtask 30-71-51-020-050-A
 A. Removal of the Drain Mast
 (1) Remove the screws (2) from the drain mast (1). CAUTION : BE VERY CAREFUL WHEN YOU REMOVE/INSTALL THE BELLOWS FROM
_______ /TO THE DRAIN MAST PIPE. IF YOU CAUSE DAMAGE TO THE BELLOWS YOU MUST REPLACE IT. TO REPLACE THE BELLOWS IT IS NECESSARY TO REMOVE THE CARGO FLOOR PANELS FOR ACCESS.
 NOTE : Be careful when you extract the extensible bellows.
____
 (2)
 Carefully extract the extensible bellows (5).

 (3)
 Loosen the clamp (4) from the extensible bellows (5). NOTE : Be careful not to damage the extensible bellows when you

____ remove the drain mast pipe out of the fuselage opening.

 (4)
 Remove the extensible bellows (5) slowly and carefully from the drain mast pipe (6).

 (5)
 Remove the extensible bellows (5) so, until you can disconnect the electrical connector (3).

 (6)
 Disconnect the electrical connector (3).

 (7)
 Carefully remove the drain mast (1) from the fuselage.

 (8)
 Put blanking caps on the disconnected electrical connectors.

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 **ON A/C ALL

 TASK 30-71-51-400-001
 Installation of the Drain Mast
 WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL MATERIALS
_______ ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific cable ties No specific non-metallic scraper FOR FIN 14DU No specific access platform 1.5 m (4 ft. 11 in.)
R 1EFF : ALL 1 30-71-51Page 413 1 1 May 01/05 1 1 1CES 1

 B. Consumable Materials

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 04-012  USA VV-P-236 PURE MINERALVASELINE OR PETRO- LATUM (Ref. 20-31-00)
 Material No. 09-016  USA MIL-PRF-81733D TYPE II CLASS B
 CORROSION INHIBITING FILLET CONSISTENCY
 (Ref. 20-31-00)

 Material No. 11-003 USA ASTM D 740
 METHYL-ETHYL-KETONE (Ref. 20-31-00)
 Material No. 16-003 F ASNB70720
 COATING (OBSOLETE USE 16-021) (Ref. 20-31-00)

 C. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
30-71-00-710-001 Operational Test of the Drainmast Ice Protection 51-76-11-300-001 Repair of the Sealing
 **ON A/C 001-049, 052-061, 101-103, 201-203,
 30-71-51-991-001  Fig. 401
 **ON A/C 051-051,
 30-71-51-991-001-B  Fig. 401A

R **ON A/C 062-099, 104-149, 151-199, 204-299, 301-399, 401-499,
 30-71-51-991-001-A Fig. 401B FOR FIN 14DU, 4DU 38-10-00-614-001 Pressurization of the Potable Water System from a
 Ground Air Supply 38-10-00-614-002 Depressurization of the Potable Water System FOR FIN 4DU 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the
 Yellow Electric Pump

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
52-30-00-860-002
53-22-14-000-001
53-22-14-400-001
FOR FIN 14DU
　
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