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 (9)  If the clearance between the actuator rod end and the actuator cylinder continues to be more than 0.100 inch (2.54 mm), do these steps:
 (a)  
Make sure the reverse thrust levers are in the fully forward and down position.

 WARNING:_______DO NOT MOVE THE REVERSE THRUST LEVERS. THE THRUST REVERSER SYSTEM IS ACTIVE AND WILL OPERATE IF YOU MOVE THE REVERSE THRUST LEVERS. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.

 (b)  
Attach the DO-NOT-OPERATE tags to the reverse thrust levers.

 (c)  
Examine the thrust reverser to make sure it is in the fully retracted position.

 (d)  
For the applicable engine, open this circuit breaker:

 1)  On the P6 panel:
 a) 6F13, ENG 1 T/R CONT
 b) 6E13, ENG 2 T/R CONT
 c) 6D13, ENG 3 T/R CONT
 d) 6C13, ENG 4 T/R CONT

 (e)  
Remove hydraulic power (AMM 29-11-00/201).

 (f)  
Cause a "target far" condition to occur on the auto-restow sensor.

 NOTE: A "target far" condition on the auto-restow sensor will
____ supply hydraulic pressure at 3000 psi to the retract side of the actuators when hydraulic power is supplied to the airplane.
 1)  Disconnect the electrical connector D4180P (for the left thrust reverser sleeve) or D4182P (for the right thrust reverser sleeve) at the strut disconnect panel.
 NOTE: This causes the auto-restow system to see the
____ thrust reverser sleeve in the extended ("target far") condition.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
2)  Alternatively, you can remove the auto-restow sensor target to cause a "target far" condition.
 NOTE: If you remove the auto-restow sensor target you
____ will have to Adjust the Thrust Reverser Position Indication System (AMM 78-36-00/501).
 (g)  
Remove the rotary flexshaft and tubing between the actuators on the applicable thrust reverser sleeve (AMM 78-31-18/401).

 (h)  
For the applicable engine, close this circuit breaker:

 1)  On the P6 panel:
 a) 6F13, ENG 1 T/R CONT
 b) 6E13, ENG 2 T/R CONT
 c) 6D13, ENG 3 T/R CONT
 d) 6C13, ENG 4 T/R CONT

 (i)  
Supply hydraulic power (AMM 29-11-00/201).

 (j)  
While you keep 3000 psi of hydraulic pressure on the locking actuator, install the rotary flexshaft and tubing between the actuators (AMM 78-31-18/401).

 S 725-055-N00
 (10)
 Extend and retract the thrust reverser five times with hydraulic power (AMM 78-31-00/201).

 S 225-056-N00

 (11)
 Remove the hydraulic power (AMM 29-11-00/201).

 S 225-057-N00

 (12)
 Measure the clearance between the actuator rod end and the actuator cylinder again.

 S 225-058-N00

 (13)
 If the clearance between the actuator rod end and the actuator cylinder is 0.100 inch (2.54 mm) or less, the clearance is correct and you have completed this task.

 S 905-059-N00

 (14)
 If the clearance between the actuator rod end and the actuator cylinder continues to be more than 0.100 inch (2.54 mm), replace the locking actuator (AMM 78-31-17/401).

 F.  
Put the Airplane Back to Its Usual Condition.

 S 435-060-N00
 (1)  Connect the electrical connector D4180P (for the left thrust reverser sleeve) or D4182P (for the right thrust reverser sleeve) at the strut disconnect panel.
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