E.  Procedures
NOTE: Use the procedure in the Master Kit to do these maintenance tasks.
(1) 
 Cleaning Procedure

(2)  
Coating Efficiency Assessment

(3) 
 Application

F.  Return the Airplane to Its Usual Condition
(1)  Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)  P6 Panel
1) Window Anti-Ice

May 01/99 30-43-1 Page 201
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

RAIN REPELLENT SPRAY NOZZLE - REMOVAL/INSTALLATION
EFFECTIVITY
All airplanes with active rain repellent systems
1.  Equipment and Materials
A.  Primer, BMS 10-11 type 1
2.  Remove Spray Nozzle
A.  Open the left and right RAIN REPELLENT circuit breakers on the P18 circuit breaker panel.
B.  Operate shutoff valve above repellent reservoir to closed position.
C.  Loosen jamnut locking nozzle head to nozzle assembly and remove nozzle head and jamnut (Fig. 401).
WARNING:  DO NOT LET THE RAIN REPELLENT FLUID TOUCH YOUR SKIN OR EYES. THE FLUID CAN CAUSE IRRITATION. DO NOT BREATHE THE FUMES. IF THE FLUID TOUCHES YOU, WASH YOUR SKIN OR EYES WITH WATER.
D.  Lower pilot instrument panel to gain access to respective nozzle plumbing.
E.  Remove nut and washer attaching bulkhead fitting to airplane structure.
F.  Loosen jamnut locking bulkhead fitting to solenoid valve and remove bulkhead fitting.
G.  Remove O-ring, backup ring, jamnut and seal washer from bulkhead fitting.

F88867
500  Rain Repellent Spray Nozzle Installation 
May 01/99  Figure 401  30-43-11 
Page 401 

BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
3. Install Spray Nozzle

A.  Install seal washer on upper end of bulkhead fitting and jamnut, backup ring and O-ring on lower end of bulkhead fitting.
B.  Screw bulkhead fitting into solenoid valve and tighten jamnut.
C.  Install fitting.
(1)  
Insert fitting through hole in airplane structure.

(2)  
Apply brush coat of primer to protruding portion of bulkhead fitting, washer, nut and exterior surface of skin to 1.00 diameter around hole before assembly, and assemble while wet. Do not allow primer to enter inside fitting.

(3)  
Install washer and nut and tighten.

D.  Install jamnut on nozzle head and screw nozzle head into bulkhead fitting, align slot in head with station line with spray holes facing window, and tighten jamnut to lock nozzle head to nozzle assembly.
E.  Open shutoff valve on repellent reservoir.
F.  Close right and left RAIN REPELLENT circuit breakers on P18 circuit breaker panel. 
G.  Wet down windshield and operate right or left rain repellent system and check for adequate flow from nozzles. 
H.  Check for any evidence of leaking around nozzle assembly. 
NOTE: The fluid in rain repellent container P/N 65-38196-5 has a citrus scent.
I.  Close pilot's instrument panel. 
500 
30-43-11 Page 402  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Feb 20/93 

NOZZLE - CLEANING/PAINTING
EFFECTIVITY
All airplanes with active rain repellent systems
1.  General
A.  The following cleaning procedure applies to the spray nozzles for the windshield washer system and the rain repellent system mounted at the base of the windshields.
2.  Cleaning
A.  Remove nozzle (Ref 30-43-11, R/I).
B.  Clean nozzle spray openings with 0.032-inch diameter wire.
C.  Blow out all debris with compressed air.
D.  Install nozzle (Ref 30-43-11, R/I).
E.  Test rain repellent system (Ref 30-43-0, A/T).
May 01/99 30-43-11 Page 701
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

RAIN REPELLENT SOLENOID VALVE - REMOVAL/INSTALLATION
EFFECTIVITY
All airplanes with active rain repellent systems
1. Remove Solenoid Valve
A. Remove respective spray nozzle. See 30-43-11, Rain Repellent Nozzle - Removal/Installation.
B. Open REPELLENT circuit breakers on the P18 circuit breaker panel.
C. Disconnect time delay module from solenoid receptacle (Fig. 401).
525  Rain Repellent System Solenoid Valve Installation 
May 01/99  Figure 401  30-43-21 
Page 401 

BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
　
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