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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 824-042-N00
 (6)  
Adjust the target clearance for the proximity sensor if it is necessary (Ref 78-36-01/501).

 D.
Install the Auto Restow Proximity Sensor (Fig. 401).

 S 424-043-N00
 (1)  
Put the proximity sensor in the correct position on the structure of the thurst reverser.

 S 424-044-N00

 (2)  
Install the mounting screws to attach the proximity sensor to the structure.

 S 434-045-N00

 (3)  
Connect each wire at the splice.

 (a)  Remove the identification tag from the wire.
 S 434-046-N00
 (4)  
Install the clamps on the wire harness.

 S 434-047-N00

 (5)  
Attach the clamps to the structure of the thrust reverser with the screws.

 S 824-054-N00

 (6)  
Adjust the target clearance for the proximity sensor if it is necessary (Ref 78-36-01/501).

 E.
Put the Airplane Back to Its Usual Condition.

 S 984-048-N00
 (1)  
Manually retract the thrust reverser (Ref 78-31-00/201).

 (2)  
Close the fan cowl panels (Ref 71-11-04/201).

 S 414-050-N00
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(3)  S 444-051-N00Do the activation procedure for the thrust reverser (Ref 78-31-00/201).
 (4)  S 444-052-N00Do the activation procedure for the speed brake control system (Ref 27-62-00/501).
 (5)  S 864-053-N00Remove the DO-NOT-OPERATE tags from the thrust levers.
 (6)  S 714-055-N00Do the operational test of the thrust reverser (Ref 78-31-00/501).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
THRUST REVERSER PROXIMITY SENSORS - ADJUSTMENT/TEST
___________________________________________________
 1.  General
_______
 A.  This procedure gives instructions to do the adjustment of the target clearances for the thrust reverser proximity sensors. You must do a check of the clearances when you install a thrust reverser sleeve or a center locking hydraulic actuator. You also must do a check of the clearances when there is a failure of the position indication system.
 B.  The actuator lock proximity sensor is installed on the center locking hydraulic actuator for each thrust reverser half. You must use the feeler gage procedure to measure the target clearance for the actuator lock proximity sensor. There is no equivalent soft clay procedure for the actuator lock proximity sensor.
 C.  The actuator deploy proximity sensor is installed on the center locking hydraulic actuator for each thrust reverser half. You can use one of two procedures to adjust this proximity sensor. One procedure gives instructions to use soft clay to measure the target clearance. The other procedure gives instructions to use a feeler gage to measure the target clearance. The two procedures are equivalent. You can use the one that works best for you.
 D.  The auto restow proximity sensor is installed on the aft face of the torque box adjacent to the center locking hydraulic actuator. You must use the soft clay procedure to measure the target clearance for the auto restow proximity sensor. There is no equivalent feeler gage procedure for the auto restow proximity sensor.
 E.  The thrust reverser proximity sensors will be referred to as the
 proximity sensors in the procedures that follow.

 TASK 78-36-01-805-020-N00
 2.  Adjust the Thrust Reverser Position Indication System
_____________________________________________________
 A.  Consumable Materials
 (1)
G02020 - Clay, Modeling (soft)
　
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