C.  
Procedure

 (1)
Open the fan cowl panels (AMM 71-11-04/201).

 S 412-001-N00
 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.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE  A 
SEE  B 
SEE  B 
SLEEVE LOCKING  SLEEVE LOCKING 
LOCK PIN  LOCKED HOLD-OPEN ROD LOCKS FOR THE FAN COWL PANELS A ROD HOLD-OPEN RED COLOR BAND LOCK PIN NOT LOCKED 
FLANGE  LATCH (NOT LOCKED)  (LOCKED) LATCH HOLD-OPEN ROD 
HOLD-OPEN ROD LOCKS FOR THE CORE COWL PANELS AND THRUST REVERSERS B Hold-Open Rod Locks Inspection and Cleaning Figure 201 

A83905
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 042-002-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 212-003-N00

 (3)  
Do the steps that follow to examine the hold-open rods on the thrust reversers:

 (a)  
Disconnect and connect the rods to the stow bracket to make sure they operate correctly.

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

 (c)  
Visually examine the rods for damage.

 (d)  
Extend the rods to make sure the rods operate smoothly.

 (e)  
Make sure the latches lock into the flanges of the rods.

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

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

 S 212-004-N00
 (4)  Do the steps that follow to examine the hold-open rods on the fan cowl panels:
 (a)  
Hold the fan cowls open from the external side.

 (b)  
Disconnect the hold-open rods 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 fan cowls with the bolts move freely.

 (e)  
Visually examine the rods for damage.

 (f)  
Extend the rods to make sure the rods operate smoothly.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
WARNING: MAKE SURE THE HOLD-OPEN RODS ARE FULLY EXTENDED AND LOCKED
_______ WHEN THE FAN COWL IS OPEN AND YOU ARE NOT THERE. THE RODS ARE NOT LOCKED WHEN YOU CAN SEE THE RED BAND WITH THE WORD "UNLOCKED" ON THE SLEEVE. IF THE RODS ARE NOT CORRECTLY LOCKED, INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (g)  
Put the pin in the hold-open rod and make sure the pin goes through the rod.

 (h)  
Move the locking sleeves three times to make sure there is no contamination in the lock devices.

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