S 864-015

 (5)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6, Main Power Distribution Panel
 1) 6B32, WINDSHIELD WASH PUMP

 (b)  
P7, Overhead Circuit Breaker Panel
 1) 7E26, WSHLD WASH

 S 864-016
 (6)  
Supply electrical power (AMM 24-22-00/201).

 S 714-017

 (7)  
Do a check of the washer operation:

 (a)  
Push and hold the applicable WASHER switch on the anti-ice/rain removal module to ON.

 (b)  
Make sure that washer fluid hits the windshield.

 (c)  
Release the WASHER switch.

 (d)  
Set the applicable WIPER switch to LO.

 (e)  
Set the WIPER switch to OFF when the windshield is almost dry.

 (8)  
Remove electrical power (AMM 24-22-00/201).

 S 864-035

 (9)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 S 864-018
 (a)  P414, Left Power Distribution Center
 1) 414D8, CAPT PWR SEAT

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747-400 MAINTENANCE MANUAL
 (b)  P415, Right Power Distribution Center 1) 415H32, F-O PWR SEAT
 S 414-019
 (10) Close the windshield washer access door.
 TASK 30-44-01-004-020
 4.  Windshield Washer Pump Removal (Fig. 401)______________________________
 A. References
 (1)  
AIPC 30-44-01, Fig. 1

 (2)  
SSM 30-42-01

 (3)  
WDM 30-44-11

 B. Access
 (1)  Location Zone
 221 Control Cabin, LH

 C. Procedure
 S 864-041
 (1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  
P6, Main Power Distribution Panel
 1) 6B32, WINDSHIELD WASH PUMP

 (b)  
P7, Overhead Circuit Breaker Panel
 1) 7E26, WSHLD WASH

 S 864-046
 WARNING: MAKE SURE TO OPEN THE CIRCUIT BREAKERS FOR THE CAPTAIN'S AND
_______ THE FIRST OFFICER'S SEATS BEFORE YOU DO WORK AROUND THEM. A FAILURE TO OPEN THE CIRCUIT BREAKERS CAN CAUSE THE SEATS TO MOVE ACCIDENTALLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2) Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  
P414, Left Power Distribution Center 1) 414D8, CAPT PWR SEAT

 (b)  
P415, Right Power Distribution Center 1) 415H32, F-O PWR SEAT

 S 014-022
 (3)  
Open the access door to get access to the windshield washer pump M13 (5).

 S 024-023

 (4)  
Remove the pump:

 (a)  
Disconnect the electrical connector DM13 (6).

 (b)  
Remove the output hoses (3) from the solenoid valves (1).

 (c)  
Remove the fasteners which hold the clamp (17) to the access door.

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747-400 MAINTENANCE MANUAL
 (d)  Loosen the nut (7) and remove the assembly of the valves (1), tee (5), union (6), nut (7), and washer (8) from the pump (15).
 NOTE: Let the electrical leads (2) twist along their length
____ until the assembly is clear of the pump.
 (e)  
Disconnect the feed hose (11) and the pump drain hose (13) from the pump (15).

 (f)  
Remove the elbow (12), nut (10), washer (9), and union (14) from the pump (15).

 (g)  
Remove the O-rings (4) from the pump (15). Discard the O-rings.

 TASK 30-44-01-404-025
 5. Windshield Washer Pump Installation (Fig. 401)
___________________________________
 A. Parts ~............................................................................... | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................. | 401 | 1 | Valve (Solenoid Valve) | 30-44-01 | 01 | 240 | | | 3 | Tubing Assembly (Output Hose) | | | 105 | | | 4 | Packing (O-ring) | | | 200 | | | 5 | Tee | | | 195 | | | 6 | Union | | | 185 | | | 7 | Nut | | | 205 | | | 8 | Washer | | | 215 | | | 9 | Washer | | | 215 | | | 10 | Nut | | | 210 | | | 11 | Tubing Assembly (Feed Hose) | | | 135 | | | 12 | Elbow | | | 190 | | | 13 | Tubing Assembly (Pump Drain Hose) | | | 150 | | | 14 | Union | | | 180 | | | 15 | Pump | | | 315 | | | 17 | Clamp | | | 50 | 2......…........…....................................…...........….....…........1
　
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