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EFFECTIVITY
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D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-42-00-003
ICE AND RAIN PROTECTION - WINDSHIELD WIPER SYSTEM - WINDSHIELD WIPER AND DRIVE ASSEMBLY
ICE AND RAIN PROTECTION - WINDSHIELD WIPER SYSTEM - WINDSHIELD WIPER AND DRIVE ASSEMBLY
EFFECTIVITY
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D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-42-00-003
General
The windshield wiper system uses 28v dc power.
Two switches on the P5 forward overhead panel control the two
wiper motors.
Functional Description
The WIPER switch is a four-position (PARK, INT, LOW, HIGH)
selector. It is a voltage divider and sends different voltage
signals to the motor electronic control package to provide
intermittent, low, and high speed wiper operation.
The motor electronic control package controls the motor speed
in response to the WIPER switch position signal.
A thermal switch in the motor assembly cuts out motor
operation if the temperature in the motor gets to 266F (130C).
The thermal switch resets automatically when the motor cools.
The PARK position will cause both blades to rotate outboard to
the lower window edge and stay there.
ICE AND RAIN PROTECTION - WINDSHIELD WIPER SYSTEM - FUNCTIONAL DESCRIPTION
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D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-42-00-004
ICE AND RAIN PROTECTION - WINDSHIELD WIPER SYSTEM - FUNCTIONAL DESCRIPTION
ICE AND RAIN PROTECTION - WINDSHIELD WIPER SYSTEM - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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D633A101-GUN Feb 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-42-00-004
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30-43-00
Page 1
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
The hydrophobic windshield coating improves visibility in heavy
rain.
Location
Hydrophobic windshield coatings are on the outside surface of
the left and right number 1 flight compartment windows.
General Description
Hydrophobic (water repellent) windshield coatings are
transparent films. The coatings repel water. This causes
water drops to bead up and roll off the windshields. The
coatings do not affect windshield strength or optical clarity.
The hydrophobic coatings wear down over time. Wear depends
on these things:
* Wiper use
* Route structure
* Windshield maintenance practices.
As the coatings wear, they do not repel water droplets as
satisfactorily. When this happens, apply a new hydrophobic
coating on the windshield. It is not necessary to remove the
windshield to do this.
Training Information Point
For maintenance of the hydrophobic coatings, regularly clean
the windshields. Use a 50 percent solution of isopropanol in
distilled water and a soft cloth to clean the windshields.
Do not use abrasive cleaning pads or cleaners. Do not use
cleaning solutions with fluorides.
Make sure the force of the blades on the window is proper.
Worn or incorrectly set-up windshield wipers wear the coatings.
ICE AND RAIN PROTECTION - RAIN REPELLENT SYSTEM - HYDROPHOBIC WINDSHIELD COATING
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D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-43-00-001
ICE AND RAIN PROTECTION - RAIN REPELLENT SYSTEM - HYDROPHOBIC WINDSHIELD COATING
ICE AND RAIN PROTECTION - RAIN REPELLENT SYSTEM - HYDROPHOBIC WINDSHIELD COATING
EFFECTIVITY
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D633A101-GUN Feb 10/2003
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-43-00-001
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30-71-00
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D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
The water and toilet drain anti-ice system prevents ice
formation in theses areas:
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