S 862-030-N00

 (3)  
Remove the DO-NOT-OPERATE tags from the thrust levers.

 S 442-031-N00

 (4)  
Do the activation procedure for the thrust reverser
 (AMM 78-31-00/201).

 S 442-032-N00

 (5)
Do the activation procedure for the flaps (AMM 27-81-00/201).

 S 442-033-N00

 (6)  
Do the activation procedure for the Speedbrake Control System (AMM 27-62-00/201).

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ENGINE FAN CASE
SEE A
FWD
LEFT THRUST REVERSER HALF (RIGHT HALF IS EQUIVALENT)
HOLD-OPEN ROD
LATCH
HOLD-OPEN ROD
(LOCKED POSITION)
FLANGE
LATCH (PUSHED IN OR UNLOCKED POSITION)
A
Thrust Reverser Hold-Open Rod Figure 203
M49431
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
TASK 78-31-00-012-034-N00
 4. Thrust Reverser Opening (Sling Procedure)
_________________________________________
 A. General
 (1)  
You must not open, extend or lift the thrust reverser if more than six cascade vane segments are removed. You must install a minimum of three cascade vane segments in each thrust reverser half. The empty space between these three cascade vane segments must be equivalent. There must not be more than two adjacent empty spaces between the three cascade vane segments which are installed.

 (2)  
Do not extend the thrust reverser sleeves when the core cowl panels are in the open position. If you do not obey this instruction, damage to the thrust reverser sleeves and the core cowl panels can occur.

 (3)  
Do not open the thrust reverser halves more than 23 degrees if the thrust reverser sleeves are extended to the deploy position. Do not extend the thrust reverser sleeves to the deploy position if the thrust reverser halves are open more than 23 degrees. If you do not obey these instructions, damage to the strut and the thrust reverser sleeves can occur.

 (4)  
Hold each thrust reverser half in the open position with a minimum of two devices at all times. For this procedure, hold each thrust reverser half up with the sling hoist and the hold-open rod at the same time.

 (5)  
You must do this procedure when it is necessary to open the thrust reverser halves to do maintenance on the cowl opening system. You also can do it as a secondary type of support for the open thrust reverser after you use one of the other procedures to open it.

 (6)  
The center-locking hydraulic actuator is referred to as the center locking actuator in this procedure.

 B.
Special Tools and Equipment

 (1)  
A71002-48 - Sling, Thrust Reverser

 C.
References

 (1)  
AMM 27-62-00/201, Speed Brake Control System

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

 (3)  
AMM 71-11-04/401, Fan Cowl Panels

 (4)  
AMM 71-11-06/201, Core Cowl Panels

 D.
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

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(2)  
Access Panels
 413 and 414 Fan Cowl Panels - Engine 1
 417 and 418 Core Cowl Panels - Engine 1
 423 and 424 Fan Cowl Panels - Engine 2
　
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