(2)  
AMM 30-42-02/401, Wiper Arm

 (3)  
AMM 30-42-00/501, Windshield Wiper System

 (4)  
SSM 30-42-01

 (5)  
WDM 30-42-11

 E. Access
 (1)  Location Zone 221 Control Cabin, LH - Outside No. 1 Left Window 222 Control Cabin, RH - Outside No. 2 Right Window
 F. Installation Procedure
 S 144-006
 (1)  
Use a sealant cutting tool to remove the aerodynamic smoother from the access opening and the skin.

 S 114-007

 (2)  
Use a small varnish brush to apply fresh aliphatic naphtha to clean the access opening.

 (a)  Rub the cleaner off with a clean cloth before it becomes dry.
 S 424-008
 (3)  Install the motor-converter:
 (a)  
Install the serrated washer (2), serrated sleeve (3), wiper arm hub (10), washer (8), and holddown screw (7) on the shaft of the motor-converter (13).

 (b)  
Bond the gasket (14) to the motor-converter (13) with rubber cement.

 (c)  
Connect electrical connector DM18 (left) or DM17 (right) (12) to the motor-converter (13).

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747-400 MAINTENANCE MANUAL
 (d)  Hold wiper arm hub (10), and install the motor-converter (13) into the access opening.
 NOTE: It is possible that you will need to hold the
____ motor-converter at an angle to install it.
 (e)  Install the mounting bolts (11).
 CAUTION: MAKE SURE TO INSTALL THE TRIP STUD IN THE CORRECT
_______ LOCATION. AN INCORRECTLY LOCATED TRIP STUD CAN CAUSE MOTOR-CONVERTER DAMAGE OR UNSATISFACTORY OPERATION.
 (f)  Install the trip stud (1) in the specified location (Fig. 401, Sheet 2).
 S 394-021
 (4)  Apply sealant:
 (a)  
Use a sealing gun to fill the joint between the airplane skin and the access plate with sealant.

 (b)  
Use a spatula to obtain a smooth surface on the sealant and to remove excess sealant.

 S 034-009
 (5)  Remove the wiper arm hub (10) from the motor-converter (13).
 G. Airplane to Its Usual Condition
 S 864-010
 (1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  P7, Overhead Circuit Breaker Panel
 1) 7E1, WSHLD WIPER L
 2) 7E25, WSHLD WIPER R

 (2)  
Supply electrical power (AMM 24-22-00/201).

 S 864-012

 (3)  
Set the WIPER switch on the anti-ice/rain removal module to LO for a short time, and then set it to OFF.

 S 864-011
 NOTE: This will to move the shaft to the parked position.
____
 S 434-013
 (4)  Assemble the wiper arm (4) and the wiper arm hub (10).
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 (5)  S 434-016Do this task:  "Wiper Arm Installation" (AMM 30-42-02/401).
 (6)  S 714-014Do this task for the applicable wiper system: "Operational Test Windshield Wiper System" (AMM 30-42-00/501).
 (7)  S 864-015Remove the DO-NOT-CLOSE tags and close these circuit breakers: (a) P6, Main Power Distribution Panel 1) 6B34, WINDOW HEAT 1L PWR 2) 6B17, WINDOW HEAT 1R PWR (b) P180, DC Power Distribution Panel 1) 180H26, WDO HEAT CONT 1L 2) 180H12, WDO HEAT CONT 1R
 (8)  S 864-022Remove electrical power (AMM 24-22-00/201).

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