(2)  
Remove the fasteners and the clamps from the wire harness.

 S 034-033-N00

 (3)  
Disconnect each wire at the splice and attach a tag to identify the
 wire.

 (4)  
Remove the mounting screws from the proximity sensor.

 S 984-026-N00
 S 034-032-N00
 S 024-034-N00
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 78-36-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
SEE  A  SEE  B 
FEEDBACK SCREW  LOCK LEVER ACTUATOR LOCK PROXIMITY SENSOR SEE C 

ACTUATOR DEPLOY  CLAMPS 
PROXIMITY SENSOR  SENSOR WIRE HARNESS 
FWD 
SEE  C 

CENTER LOCKING HYDRAULIC ACTUATOR
A

Actuator Lock and Actuator Deploy Proximity Sensor Installation
Figure 401 (Sheet 1)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
BUMPER PAD STOP
AUTO RESTOW PROXIMITY SENSOR
ACTUATOR LOCK
PROXIMITY SENSOR

CENTER LOCKING
HYDRAULIC ACTUATOR
SCREW WASHER (2 LOCATIONS)
FWD
THRUST REVERSER SLEEVE (DEPLOY POSITION)
B
FEEDBACK SCREW
LOCK LEVER (REF)
TARGET
ACTUATOR LOCK PROXIMITY SENSOR
TARGET
ACTUATOR DEPLOY

1
NUTPROXIMITY SENSOR WASHER
CENTER LOCKING HYDRAULIC ACTUATOR (STOW POSITION)
1
PUT THE LOCKWIRE BETWEEN
C
THE NUT AND THE SENSOR
Actuator Lock and Actuator Deploy Proximity Sensor Installation
Figure 401 (Sheet 2)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 024-035-N00
 (5) Remove the proximity sensor from the thrust reverser structure.
 TASK 78-36-01-404-036-N00
 3.  Install the Thrust Reverser Proximity Sensors
_____________________________________________
 A.  References
 (1)  
27-62-00/501, Speed Brake Control System

 (2)  
71-11-04/201, Fan Cowl Panels

 (3)  
78-31-00/201, Thrust Reverser System

 (4)  
IPC 78-36-01 Fig. 1

 B.  
Access

 (1)  
Location Zones 415 and 416 Engine 1 - Thrust Reverser Halves 425 and 426 Engine 2 - Thrust Reverser Halves 435 and 436 Engine 3 - Thrust Reverser Halves 445 and 446 Engine 4 - Thrust Reverser Halves

 (2)  
Access Panels
 413 and 414 Fan Cowl Panels - Engine 1
 423 and 424 Fan Cowl Panels - Engine 2
 433 and 434 Fan Cowl Panels - Engine 3
 443 and 444 Fan Cowl Panels - Engine 4

 C.  
Install the Actuator Deploy or the Actuator Lock Proximity Sensors (Fig. 401).

 S 424-037-N00
 (1)  
Put the proximity sensor in the correct position on the center locking hydraulic actuator.

 S 424-038-N00

 (2)  
Install the washer and the nut on the proximity sensor.

 (a)  Install the lockwire on the nut.
 S 434-039-N00
 (3)  
Connect each wire at the splice.

 (a)  Remove the identification tag from the wire.

 (4)  
Install the clamps on the wire harness.

 S 434-041-N00

 (5)  
Attach the clamps to the structure of the center locking hydraulic actuator with the screws.

 S 434-040-N00
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