Subtask 20-23-38-941-063
D. Safety Precautions
(1) Put a warning notice in position to tell personnel not to fill or pressurize the potable water system.
4. Procedure
_________ Subtask 20-23-38-010-059
A. Removal of the Tube Assy Fitted with HARRISONS Sleeves and Unions
(Ref. Fig. 201/TASK 20-23-38-991-015)
(1) Remove the potable-water de-icing heater elements (4DW,5DW,6DW,9DW) (Ref. TASK 30-73-53-000-001).
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Connection of a (two) Tube(s) with Fittings
Figure 201/TASK 20-23-38-991-015
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(2)
Put a container in position below the potable water line to collect the unwanted water.
(3)
Carefully loosen the sleeve nut and remove the tube assembly.
(4)
Put blanking plugs on the disconnected line ends.
(5)
If necessary do the repair of the tube assembly (Ref. TASK 20-23-38-300-049) (Ref. TASK 20-23-38-300-001)
Subtask 20-23-38-010-062
B. Removal of a Tube Section fitted with PERMASWAGE Fittings
(Ref. Fig. 202/TASK 20-23-38-991-037)
(1)
Remove the potable-water de-icing heater elements as necessary (Ref. TASK 30-73-53-000-001).
(2)
Put a container in position below the potable water line to collect the unwanted water.
(3)
Cut the tube end or section with a chipless cutter
(Ref. Fig. 203/TASK 20-23-38-991-004)
(4)
Remove the tube end or section.
(5)
Put blanking plugs on the disconnected line ends.
(6)
If necessary do the rapair of the tube assembly (Ref. TASK 20-23-38-300-048) (Ref. TASK 20-23-38-300-002) and/or (Ref. TASK 20-23-38-300-049)
Usual Repair Procedures
Figure 202/TASK 20-23-38-991-037
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Chipless Cutter
Figure 203/TASK 20-23-38-991-004
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TASK 20-23-38-300-001
R R Repair of the Tubes Assembly of the Potable Water and the Air Supply System to be carried out in the Workshop
R R NOTE : The procedure is the same for both the potable water and the air supply____ sytem.
1. Reason for the Job__________________
Self Explanatory
2. Job Set-up Information______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific No specific No specific No specific No specific No specific No specific No specific No specific brushclean clothdeburring toolstem assemblyswaging toolstubing cutterDLT5302-031-01Grade 240 emery clothTorque Wrench : range 0.20 to 3.60 m.daN (2.00 to 26.00 lbf.ft)
B. Consumable Materials
-------------------------------------------------------------------------------
REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 03-001 Material No. 04-012 Material No. 08-009 Material No. 08-024 Material No. 11-003 USA MIL-PRF-7870 MINERAL OIL (LOW TEMP) (Ref. 20-31-00)USA VV-P-236 PURE MINERALVASELINE OR PETRO- LATUM (Ref. 20-31-00)USA MIL-R-46082 PRIMER, ACTIVATOR FOR ANAEROBIC (Ref. 20-31-00)USA MIL-R-46082 TYPE III ADHESIVE COMPOUND (Ref. 20-31-00)USA ASTM D 740 METHYL-ETHYL-KETONE (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
20-23-38-000-001 Removal of the Tubes of the Potable Water and the Air Supply System R 20-23-38-400-003 Installation of the Tubes Assembly of the Potable
Water and Air Supply System
20-23-38-991-015 Fig. 201
20-23-38-991-004 Fig. 203
20-23-38-991-016 Fig. 204
20-23-38-991-017 Fig. 205
20-23-38-991-051 Fig. 206
20-23-38-991-005 Fig. 207
20-23-38-991-018 Fig. 208
20-23-38-991-019 Fig. 209
20-23-38-991-020 Fig. 210
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