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S 862-078-N00
 CAUTION: MAKE SURE ALL THE ACTUATORS OPERATE CORRECTLY WHEN YOU EXTEND
_______ THE THRUST REVERSER. IF THE FLEXSHAFT BETWEEN THE ACTUATORS IS BROKEN, OR IS NOT INSTALLED, ONLY THE BOTTOM ACTUATOR WILL OPERATE. IF YOU CONTINUE TO OPERATE THE THRUST REVERSER WITH THIS CONDITION, DAMAGE TO THE THRUST REVERSER CAN OCCUR.
 (8)  While you keep the sync lock disengaged, turn the square drive to fully extend the applicable thrust reverser sleeve.
 NOTE: Make sure you turn the square drive in the direction that
____ extends the thrust reverser sleeve. For the left sleeve, turn the manual drive counterclockwise. For the right sleeve, turn the manual drive clockwise.
 Make sure the manual drive turns smoothly. If it does not turn smoothly, stop the manual operation and install the square drive again. If the manual drive continues to operate roughly, use the power method to extend the thrust reverser sleeve (AMM 78-31-00/201).
 S 032-079-N00
 (9)  If it is necessary to remove the hydraulic tubes or the components for the thrust reverser, close the bypass valve:
 NOTE:____The bypass valve is on the isolation valve. Keep the bypass valve closed when you remove the hydraulic components of the thrust reverser. If the bypass valve is open, the hydraulic fluid can come out of the disconnected fluid lines.
 (a)  
Remove the streamer pin that holds the manual override lever for the bypass valve in the open position

 (b)  
Set the manual override lever on the bypass valve to the closed position.

 TASK 78-31-00-862-080-N00
 7.  Thrust Reverser Operation - Retract (Manual Procedure)______________________________________________________
 A. References
 (1)  
AMM 27-62-00/201, Speed Brake Control System

 (2)  
AMM 27-81-00/201, Leading Edge Flap Systems

 (3)  
AMM 71-11-04/201, Fan Cowl Panels

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 78-31-00
 ALL  ú ú N01 Page 230 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
B. Access
 (1)  
Location Zone
 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 Panel
 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.
Procedure

 NOTE: Make sure the L. E. and T. E. flaps continue to be in the
____
 deactivated condition.

 S 432-081-N00
 (1)  If you installed the hydraulic tubes or the components for the thrust reverser, open the bypass valve:
 NOTE:____The bypass valve is on the isolation valve. Keep the bypass valve open to prevent hydraulic lock when you manually operate the thrust reverser sleeves.
 (a)  
Set the bypass valve to the open position

 (b)  
Install the streamer pin and the hitch pin to hold the manual override lever on the bypass valve open.

 S 862-082-N00
 CAUTION: DO NOT USE A SCREWDRIVER BETWEEN THE LOCK PROXIMITY SENSOR AND
_______ THE TARGET TO MOVE THE LOCK LEVER TO THE UNLOCKED POSITION. IF YOU USE A SCREWDRIVER OR OTHER TOOL TO SUPPLY A SEPARATION FORCE, YOU CAN CAUSE DAMAGE TO THE LOCK PROXIMITY SENSOR OR THE TARGET.
 (2) Move the lock lever on the locking actuator away from the sensor.
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 78-31-00
 ALL  ú ú N01 Page 231 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////

RODEND CLEARANCE FOR THE CENTER LOCKING HYDRAULIC ACTUATOR

B

1
THE RODEND CLEARANCE MUST NOT BE
MORE THAN 0.100 INCH (2.54 mm) WITH
THE HYDRAULIC PRESSURE REMOVED.

Thrust Reverser Operation-Deploy/Stow (Manual or Power Method)
　
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