WINDSHIELD WIPER SYSTEM - MAINTENANCE PRACTICES
1. General
A. This procedure has these tasks:
(1) Windshield wiper system - deactivation.
(2) Windshield wiper system - activation.
TASK 30-42-00-040-801
2. Windshield Wiper System - Deactivation
A. General
(1) This task will deactivate the power to the windshield wiper system.
B. Location Zones
Zone Area
211 Flight Compartment - Left
212 Flight Compartment - Right
C. Procedure
SUBTASK 30-42-00-020-001
(1) Open these circuit breakers and install safety tags:
CAPT Electrical System Panel, P18-3
Row Col Number Name
B 1 C00055 ANTI-ICE & RAIN WSHLD WIPER RIGHT
B 3 C00054 ANTI-ICE & RAIN WSHLD WIPER LEFT
D 1 C00226 WINDOW HEAT CONTROL RIGHT FRONT AC
E 1 C00224 WINDOW HEAT CONTROL LEFT FRONT AC
F/O Electrical System Panel, P6-11
Row Col Number Name
B 9 C00228 WINDOW HEAT POWER LEFT FRONT
F/O Electrical System Panel, P6-12
Row Col Number Name
B 8 C00394 WINDOW HEAT POWER RIGHT FRONT
D. Windshield Wiper System - Tryout
NOTE: This tryout is to make sure that the power to the windshield wiper system is in a zero energy
state.
SUBTASK 30-42-00-210-002
CAUTION
DO NOT OPERATE THE WINDSHIELD WIPERS ON DRY GLASS. ALWAYS
SUPPLY WATER TO THE WINDSHIELDS BEFORE YOU OPERATE THE
WIPER. THE WIPER WILL CAUSE DAMAGE TO A DRY WINDSHIELD.
(1) Supply a continuous spray of clean water to the windshield.
SUBTASK 30-42-00-210-003
(2) Set the right windshield wiper switch to the INT, LOW, or HIGH position.
(a) Make sure that the right wiper does not come on.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-42-00
Page 201
D633A101-ILF Oct 15/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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