LOWER NON-LOCKING HYDRAULIC ACTUATOR
(LEFT SIDE IS SHOWN, RIGHT SIDE IS OPPOSITE)

A

Lower Non-Locking Hydraulic Actuator
Figure 202

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L51546
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MAINTENANCE MANUAL

 CAUTION: DO NOT DISENGAGE THE FLEX SHAFTS FROM THE ACTUATORS.
_______ IF YOU DISENGAGE THE FLEX SHAFTS FROM THE ACTUATORS, IT MAY CAUSE THE THRUST REVERSER TO BE OUT OF ADJUSTMENT.
 (c)  Apply a force to the upper and lower flex tubes to push them into the tube nuts at the upper and lower actuators.
 NOTE: This will give more distance at the open end of the tube
____ to observe the origin of any hydraulic fluid flow.
 (d)  Move the tube nuts, at the center locking actuator, along the tube until the outer end of the nut and tube are aligned.
 D. Apply hydraulic stow pressure to the thrust reverser actuators.
 NOTE: There are two methods to apply stow hydraulic pressure to
____ the thrust reverser sleeve which puts pressure on all three actuators. The first method uses airplane hydraulic pressure. The second method uses a hydraulic ground service cart.
 S 942-009-N00
 (1) If you use the airplane hydraulic power, do the steps that follow:
 (a)  
Make sure the reverser thrust levers are in the forward, stowed position with the DO-NOT-OPERATE tags installed.

 (b)  
For the left engine, make sure this circuit breaker is open and the DO-NOT-CLOSE tag is attached: 1) On the overhead circuit breaker panel, P11:

 a) 11D14, L ENG T/R CONT

 (c)  
For the right engine, make sure these circuit breakers are open and the DO-NOT-CLOSE tags are attached: 1) On the overhead circuit breaker panel, P11:

 a) 11L33, R ENG T/R CONT b) 11D33, R ENG T/R CONT ALTN

 (d)  
Disconnect the electrical connector D4180P (LH sleeve) or D4182P (RH sleeve) for the engine strut.

 NOTE: The auto restow system is in the deployed condition
____ of the thrust reverser sleeve.
 (e)  
Supply electrical power (AMM 24-22-00/201).

 (f)  
Remove the streamered pin from the deactivation slide of the stow valve. 1) Do not close the circuit breakers for the thrust reverser

 control.
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MAINTENANCE MANUAL

 WARNING: MAKE SURE PERSONS AND EQUIPMENT ARE AWAY FROM THE THRUST
_______ REVERSER BEFORE HYDRAULIC PRESSURE IS SUPPLIED TO THE THRUST REVERSER. WITH THE ELECTRICAL POWER SUPPLIED, THE THRUST REVERSER MAY MOVE WHEN THE HYDRAULIC POWER IS SUPPLIED. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (g)  
Supply hydraulic power (AMM 29-11-00/201).

 (h)  
For the left engine, remove the DO-NOT-CLOSE tag and close this circuit breaker:

 NOTE: The thrust reverser sleeves may move slightly.
____
 Do not remove the hydraulic power.

 1)  On the P11 panel:
 a) 11D14, L ENG T/R CONT

 (i)  For the right engine, remove the DO-NOT-CLOSE tag and close this circuit breaker:
 NOTE: The thrust reverser sleeves may move slightly.
____
 Do not remove the hydraulic power.

 1)  On the P11 panel:
 a) 11L33, R ENG T/R CONT
 b) 11D33, R ENG T/R CONT ALTN

 S 942-010-N00
 (2)  If you use the hydraulic ground service cart, do the steps that follow:
 CAUTION: IMMEDIATELY CLEAN ALL OF THE HYDRAULIC FLUID THAT FALLS.
_______ THE HYDRAULIC FLUID CAN CAUSE CONTAMINATION OF THE AIRPLANE OR THE ENGINE.
 (a)  
Disconnect the retract line flex hose for the non-locking hydraulic actuator from the strut hydraulic connection. 1) Catch the hydraulic fluid in an approved container.

 (b)  
Connect the hydraulic ground service cart to the retract line flex hose (5) for the retract line.
　
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