S 012-005-N00
 (5)  
Open the core cowl panels (AMM 71-11-06/201).

 S 212-006-N00

 (6)  
Do the steps that follow to examine the hold-open rods on the core cowl panels:

 (a)  
Hold the core cowl panels open from the external side.

 (b)  
Disconnect the hold-open rods on the core cowl panels from the brackets on the engine.

 (c)  
Connect and disconnect the rods from the stow brackets to make sure they operate correctly.

 (d)  
Make sure the end of the rods that attach to the core cowls with the bolts move freely.

 (e)  
Visually examine the hold open rod attach bracket assembly for wear and damage. 1) Make sure there is no crack in the hold open rod attach

 bracket. 2) Make sure the minimum remaining thickness for the hold open rod attach bracket eye bolt flange is 0.110 inch
 (2.794 mm).
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3)  Make sure the torque for the hold open rod attach bracket eye bolt nut is 160 - 240 inch-pounds (18.1 - 27.1 newton-meters).
 (f)  
Visually examine the rods for damage.

 (g)  
Extend the rods to make sure they operate smoothly.

 (h)  
Make sure the latches go into the flanges when the rods are fully extended.

 (i)  
Push the latches to release the rods three times to make sure there is not contamination in the latches.

 (j)  
If there is contamination on the rods or on the latches, clean the rods.

 (k)  
Make sure the latches point to the forward direction (Refer to 747-400 SB 71-2233 and 747-400 MT 71-008).

 S 412-007-N00
 (7)  
Close the core cowl panels (AMM 71-11-06/201).

 S 442-018-N00

 (8)  
Do the activation procedure for the thrust reverser (AMM 78-31-00/201).

 S 412-008-N00

 (9)  
Close the fan cowl panels (AMM 71-11-04/201).

 TASK 71-11-10-102-009-N00
 3.  Cowl Panel Hold-Open Rod - Cleaning/Painting (Fig. 201)____________________________________________
 A.  Consumable Materials
 (1)  
B00069 Solvent - Triclorethane

 B.  
Access

 (1)  
Location Zone 413 and 414 Fan Cowl Panel - Engine 1 423 and 424 Fan Cowl Panel - Engine 2 433 and 434 Fan Cowl Panel - Engine 3 443 and 444 Fan Cowl Panel - Engine 4 415 and 416 Thrust Reverser Halves - Engine 1 425 and 426 Thrust Reverser Halves - Engine 2 435 and 436 Thrust Reverser Halves - Engine 3 445 and 446 Thrust Reverser Halves - Engine 4 417 and 418 Core Cowl Panel - Engine 1 427 and 428 Core Cowl Panel - Engine 2 437 and 438 Core Cowl Panel - Engine 3 447 and 448 Core Cowl Panel - Engine 4

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
C. Procedure
 S 412-010-N00
 (1)  Open the fan cowl panels (AMM 71-11-04/201).
 NOTE: You open the fan cowl panels for access to the hold-open
____ rods on the thrust reversers. It is not necessary to open the thrust reversers to examine the hold-open rods.
 S 042-011-N00
 WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______
 OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF
 THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO
 EQUIPMENT.

 (2)  
Do this procedure: Thrust Reverser Deactivation for Ground
 Maintenance (AMM 78-31-00/201).

 S 112-012-N00

 (3)  
Do the steps that follow to clean the hold-open rods on the fan cowl panels:

 (a)  
Make sure the rods are extended and locked.

 (b)  
Apply a large quantity of the solvent below the lock sleeves.
　
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