Boeing 737-600 - Subject 30-71-03 - WASTE DRAIN LINE HEATER; Pageblock 30-71-03;401 - WASTE DRAIN LINE HEATER - REMOVAL;INSTALLATION; Task 30-71-03-000-801 - Waste Drain Line Heater Removal; Subtask 30-71-03-860-001

WASTE DRAIN LINE HEATER - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) Waste Drain Line Heater Removal
(2) Waste Drain Line Heater Installation
TASK 30-71-03-000-801
2. Waste Drain Line Heater Removal
(Figure 401)
A. General
(1) This task gives instructions to remove the Waste Drain Line Heater.
(2) The heater blanket covers the ball valve of the waste tank.
B. References
Reference Title
25-52-20-000-801 Waste Tank Enclosure Panel - Removal (P/B 401)
WDM 30-71-12 Wiring Diagram Manual
C. Location Zones
Zone Area
141 Aft Cargo Compartment - Left
D. Access Panels
Number Name/Location
822 Aft Cargo Door
E. Prepare for the Removal
SUBTASK 30-71-03-860-001
(1) Open this circuit breaker and install safety tag:
CAPT Electrical System Panel, P18-3
Row Col Number Name
E 5 C00233 HEATERS DRAIN
SUBTASK 30-71-03-010-001
(2) Open this access panel:
Number Name/Location
822 Aft Cargo Door
SUBTASK 30-71-03-010-002
(3) Do this task: Waste Tank Enclosure Panel - Removal, TASK 25-52-20-000-801.
F. Waste Drain Line Heater Removal
SUBTASK 30-71-03-020-001
(1) Remove the nut [7], screw [3], washer [4] and clamp [2] from the heater blanket [1] wires.
SUBTASK 30-71-03-020-002
(2) Disconnect the electrical connectors [5] (WDM 30-71-12).
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-71-03
Page 401
D633A101-ILF Oct 15/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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