Removal of AFT Waste-Pipe Heating Elements

TASK 30-71-58-000-001-A
Removal of AFT Waste-Pipe Heating Elements

WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:

FLUSH IT AWAY WITH CLEAN WATER
GET MEDICAL AID.

ZONE: 160
ZONE: 170
FIN: 71DU ** ON A/C NOT FOR ALL
FIN: 72DU ** ON A/C NOT FOR ALL
FIN: 73DU ** 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 2M (6 FT) - ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	1	ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05TAB1)	Adhesive Tape-- Glass Cloth -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
160	BULK CARGO COMPARTMENT AFT BULKHEAD OF AFT CARGO COMPARTMENT TO AFT BULKHEAD OF BULK CARGO COMPARTMENT
170	AFT CAB U/FLOOR COMPT AFT BHD OF BULK
162DW

D. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 38-31-74-000-001-A	Removal of the Waste Tank Drain Line
TASK 52-30-00-860-006-A	Open the Bulk Cargo-Compartment Door
AFT Waste-Pipe Heating Elements

3. Job Set-up
Subtask 30-71-58-861-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 30-71-58-865-053-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
2001VU	WASTE WIP-HEATER-LINE	31DU	E04

Subtask 30-71-58-010-050-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 an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
(3) Set cargo-compartment light switch 18LU to the ON position.
(4) Remove partition panel 162DW (Ref. AMM TASK 25-55-12-000-001).

4. Procedure
Subtask 30-71-58-020-050-A ** ON A/C NOT FOR ALL

WARNING: YOU MUST ALWAYS WEAR RUBBER GLOVES WHEN YOU DO THIS PROCEDURE.

A. Removal of a Heater Element (Example)

NOTE: The removal procedure is the same for all the heater elements.

(1) Remove and discard the TIE WRAP(S) (4) from the identification and warning labels.
(2) Remove and discard the TIE WRAP(S) (4) from the electrical wires of the heater element (8).
(3) Remove the insulation blanket(s) (1) from the heater element (8).

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

CAUTION: MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

(4) Disconnect the electrical connections (5) with an ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(5) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(6) Remove the tank connecting tube (Ref. AMM TASK 38-31-74-000-001).

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

(7) Remove and discard the SLEEVE - SHRINKING (6) from the heater element (8).
(8) Remove and discard the Adhesive Tape-- Glass Cloth - (Material No.05TAB1) (7) from the heater element (8).
(9) Remove the heater element (8).

[Rev.10 from 2021] 2026.04.01 00:32:13 UTC