TASK 30-71-01-400-801
3. Potable Water Fill Fitting Heater Installation
(Figure 401)
A. References
Reference Title
12-14-01-600-802 Potable Water Tank - Fill (P/B 301)
25-52-10-400-801 Cargo Floor Panel - Installation (P/B 401)
38-10-00-600-801 Potable Water System - Disinfectant (P/B 201)
B. Consumable Materials
Reference Description Specification
A00247 Sealant - Pressure And Environmental -
Chromate Type
BMS5-95
C. Location Zones
Zone Area
142 Aft Cargo Compartment - Right
822 Aft Cargo Door
D. Access Panels
Number Name/Location
146AR Water Service Door
822 Aft Cargo Door
E. Potable Water Fill Fitting Heater Installation
SUBTASK 30-71-01-420-001
(1) Apply the sealant, A00247, to all the mating surfaces of the thermal spacers [2] and fill fitting
heater [1].
SUBTASK 30-71-01-420-002
(2) Put the fill fitting heater [1], thermal spacer [2], and O-ring [3] in position.
SUBTASK 30-71-01-420-005
(3) Apply sealant, A00247, to the bolts [4] and install the bolts [4].
SUBTASK 30-71-01-420-004
(4) Connect the heated hose to the fill fitting heater [1].
(a) Tighten the heated hose to the fill fitting to 620 ±80 in-lb (70 ±9 N·m).
SUBTASK 30-71-01-670-001
(5) Disinfect the potable water system (TASK 38-10-00-600-801).
F. Potable Water Fill Fitting Heater Installation Test
SUBTASK 30-71-01-860-002
(1) Remove the safety tags and close these circuit breakers:
CAPT Electrical System Panel, P18-3
Row Col Number Name
D 18 C01463 WASTE/WTR LINE HEATERS
E 5 C00233 HEATERS DRAIN
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-71-01
Page 405
D633A101-ILF Jun 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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