(4)
 Carefully remove and discard the adhesive tape (9) which is on the longitudinal cut of the insulation sleeve (10).

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 (5)
 Remove the insulation sleeve (10) that insulates the waste water line.

 (6)
 Disconnect the three wires (5) of the heater elements (7) from the terminal strip.

 NOTE : Identify all the electrical wires before you disconnect them.
____
 (7)
 If necessary, remove the waste-water de-icing sensor (141DU) (Ref. TASK 30-71-17-000-002).

 (8)
 Remove and discard the heat-shrink sleeve (8) and the glass fiber tape (6) that attaches the heater element (7) to the waste water line.

 NOTE : Do not damage the waste water line when you remove the
____
 heat-shrink sleeve.

 (9) Remove the heater element (7).
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 Heater Elements
 Figure 401/TASK 30-71-53-991-006- 12 (SHEET 1)

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 Heater Elements
 Figure 401/TASK 30-71-53-991-006- 22 (SHEET 2)

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 Installation of the Waste-Water De-icing Heater Elements (48DU, 49DU, 142DU)
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific lint free cloth
 No specific access platform 2 m (6 ft. 7 in.)

 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 08-001  USA DOD-A-82720 GENERAL PURPOSE ADHESIVE HONEYCOMB FILLER (Ref. 20-31-00)
 Material No. 11-001  USA MIL-D-16791 TYPE I DETERGENT (Ref. 20-31-00)
 C. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power 30-71-00-710-002 Operational Test of the Waste-Water Ice-Protection
 Heater-Elements 30-71-17-400-002 Installation of the Temperature Sensor (141DU) 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the
 Yellow Electric Pump
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52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 30-71-53-991-006 Fig. 401
 3. Job Set-up
__________
 Subtask 30-71-53-860-055
 A. Aircraft Maintenance Configuration
 (1)
 Make sure that the ground service network is energized (Ref. TASK 24-42-00-861-001).

 (2)
 Make sure that the access platform is in position at the FWD cargo-compartment door 825.

 Subtask 30-71-53-010-062
 B. Get Access
 (1)
 Make sure that the FWD cargo-compartment door 825 is open (Ref. TASK 52-30-00-860-001).

 (2)
 Make sure that the CARGO COMPT LIGHT switch 6LU is at ON.

 (3)
 Make sure that, in the FWD cargo compartment, the following panel(s) is(are) removed: FOR 48DU 131GW, 131HW FOR 49DU 131HW, 131EG, 131DG, 131CG FOR 142DU 131GW.

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 Subtask 30-71-53-865-066

 C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------

R C/B NOT APPLICABLE
 4. Procedure
_________
 (Ref. Fig. 401/TASK 30-71-53-991-006)
 Subtask 30-71-53-420-056

 A. Installation of the Heater Elements WARNING : OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE THE SPECIAL
　
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