Removal of the AFT Drain-Mast Pipe Heater-Elements

TASK 30-71-57-000-001-A
Removal of the AFT Drain-Mast Pipe Heater-Elements

FIN: 61DU ** ON A/C NOT FOR ALL
FIN: 62DU ** ON A/C NOT FOR ALL
FIN: 63DU ** ON A/C NOT FOR ALL
FIN: 64DU ** ON A/C NOT FOR ALL
FIN: 65DU ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	1	ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
162DW

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 52-30-00-860-006-A	Open the Bulk Cargo-Compartment Door
Heater Elements

3. Job Set-up
Subtask 30-71-57-861-050-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002)

Subtask 30-71-57-865-053-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP-HEATER-CTL	32DW	D02
** ON A/C NOT FOR ALL
2001VU	WASTE WIP-HEATER-LINE	31DU	E04
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP HEATER CTL	32DW	D02

Subtask 30-71-57-010-050-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the bulk cargo-compartment door (Ref. AMM TASK 52-30-00-860-006).
(2) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position after you open the bulk cargo-compartment door.
(3) Set cargo-compartment light switch 18LU to ON.
(4) Remove rear-wall partition panel 162DW (Ref. AMM TASK 25-55-12-000-001).

4. Procedure
Subtask 30-71-57-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Heating Element (Example)
(1) Remove and discard the cable ties of the identification and warning labels.
(2) Remove and discard the cable ties which attach the electrical wires of the related heater element (1).
(3) Disconnect the electrical connections (3) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(4) Identify all the electrical wires before you disconnect them.
(5) If necessary, remove the related temperature sensor.

CAUTION: BE CAREFUL WHEN YOU REMOVE/INSTALL THE SHRINKABLE SLEEVE. IF YOU ARE NOT CAREFUL, YOU CAN CAUSE DAMAGE TO THE TUBE.

(6) Remove and discard the shrinkable sleeve (2) that safeties both ends of the glass fiber tape (4).
(7) Remove and discard the glass fiber tape which attaches the heater element (1) to the waste water tube (5).
(8) Remove the heater element (1).

[Rev.10 from 2021] 2026.04.02 06:20:15 UTC