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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 012-011-N00
 (10)
 Open the louvered exhaust door on the bottom of the applicable engine (Fig. 201).

 S 012-012-N00

 (11)
 Release all four tension latches on the bottom of the thrust reverser.

 (a)  
The aft external tension latch that is aft of the exhaust door.

 (b)  
The two tension latches behind the exhaust door.

 (c)  
The forward tension latch on the torque box.

 S 012-013-N00
 (12)
 Release the T-bolt latch handle that attaches the V-groove latch band around the thrust reverser.

 S 612-014-N00

 (13)
 Make sure the cowl hand pump is full of oil.

 S 492-015-N00

 (14)
 Connect the hose from the hand pump to the pressure manifold on the bottom of the left or right thrust reverser half (Fig. 202).

 NOTE: Make sure the return valve on the hand pump is closed.
____
 S 012-016-N00
 WARNING: DO NOT MOVE BETWEEN THE ENGINE AND THE OPEN THRUST REVERSER
_______ UNTIL YOU INSTALL THE HOLD-OPEN ROD. THE THRUST REVERSER IS HEAVY AND CAN FALL CLOSED QUICKLY IF THE HAND PUMP OR ITS HYDRAULIC SYSTEM HAS A FAILURE. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (15)
 Slowly operate the hand pump to open the applicable thrust reverser to the half-open position.

 S 492-017-N00

 (16)
 Do these steps to install the hold-open rod (Fig. 203):

 (a)  
Disconnect the bottom end of the hold-open rod from the bracket on the thrust reverser.

 (b)  
Extend the hold-open rod to engage the support bracket at the 23-degree (bottom) or the 45-degree (top) position on the engine fan case.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(c)  Continue to operate the hand pump until the hold-open rod locks in the fully extended position.
 NOTE: If you install the hold-open rod in the bracket at
____ the 45-degree position, it is usually necessary to manually push up on the thrust reverser to fully extend and lock the hold-open rod.
 S 212-018-N00
 WARNING: MAKE SURE THE HOLD-OPEN ROD IS FULLY EXTENDED AND LOCKED BEFORE
_______ YOU MOVE BETWEEN THE ENGINE AND THE OPEN THRUST REVERSER. THE THRUST REVERSER IS HEAVY AND CAN FALL CLOSED QUICKLY IF THE HAND PUMP OR ITS HYDRAULIC SYSTEM HAS A FAILURE. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 WARNING: DO NOT PUT YOUR WEIGHT ON A THRUST REVERSER THAT IS KEPT OPEN
_______ WITH A HOLD-OPEN ROD ONLY. YOUR WEIGHT CAN CAUSE THE FAILURE OF THE HOLD-OPEN ROD. THE THRUST REVERSER IS HEAVY AND CAN FALL CLOSED QUICKLY, WHICH CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (17) Examine the hold-open rod to make sure it is fully extended and locked:
 NOTE: DO NOT release the hydraulic pressure from the hand pump at
____ this time. The hydraulic pressure from the hand pump will help to keep the thrust reverser in the open position.
 (a)  
HOLD-OPEN RODS WITH THE LATCH; Make sure the latch fully engages the face of the flange on the hold-open rod.

 (b)  
HOLD-OPEN RODS WITH THE LOCK SLEEVE AND BALL LOCKPIN; Do these steps: 1) Make sure you cannot see the red band (with the word

 UNLOCKED on it) on the hold-open rod. 2) Make sure the ball lockpin is installed through the hold-open rod.

 (c)  
HOLD-OPEN RODS WITH THE LOCK SLEEVE AND SECONDARY LOCK; Do these steps: 1) Make sure you cannot see the red band (with the word

 UNLOCKED on it) on the hold-open rod. 2) Make sure the secondary lock is engaged in the slot of the hold-open rod.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
　
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