(7)  
Open the core cowl panel (AMM 71-11-06/201).

 (8)  
Attach the hoist arm (2) to the boom hoist (1).

 (9)  
Attach the core cowl sling (3) to the hoist arm (2).

 S 034-011-N00

 (10)
 Disconnect and put the hold-open rod in the stow position while you hold the core cowl panel with the boom hoist.

 S 014-008-N00
 S 494-009-N00
 S 494-010-N00
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 71-11-06
 ALL  ú ú N01 Page 405 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 034-012-N00
 (11)
 CORE COWL PANELS WITH HINGE BOLTS; Remove the bolt (4), washer (2) and nut (3) from the hinges.

 S 034-033-N00

 (12)
 CORE COWL PANELS WITH QUICK-RELEASE PINS;
 Remove the quick-release pin (5) from the hinges.

 S 024-013-N00

 (13)
 Remove the core cowl panel (1).

 (a)
Remove the core cowl panel away from the engine.

 (b)
Put the core cowl panel on the stroage rack.

 S 094-014-N00
 (14) If the same core cowl panel is not installed, do the steps that follow (Fig. 401):
 (a)
Remove the core cowl sling (3) from the core cowl panel (4).

 (b)
Install the bolts (7 and 10) to the core cowl panel (4).

 TASK 71-11-06-424-042-N00
 3. Install the Core Cowl Panel
___________________________
 A. Special Tools and Equipment
 (1)
A71016-1 Sling - Core Cowl

 (2)  
A20001-79 Boom Hoist - General (8 foot
 Lift, 400 pound cap)

 (3)
A20001-65 Hoist Arm - Extension

 B.
Consumable Materials

 (1)
D00014 Grease - MIL-G-21164 Molybdenum Disulphide

 C.
Parts

 ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 4 | Cowl Panel - Core (LH) | 71-11-06 | 01 | 50 | | | | Cowl Panel - Core (RH) | | | 55 | | 402 | 1 | Cowl Panel - Core (LH) | 71-11-06 | 01 | 50 | | | | Cowl Panel - Core (RH) | | | 55 | 2.....….........…...................................…..........…......…........1
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 71-11-06
 ALL  ú ú N01 Page 406 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
D. References
 (1)  
AMM 71-11-06/201, Core Cowl Panel

 (2)  
AMM 71-11-07/501, Core Cowl Panel Latch

 (3)  
AMM 78-31-00/201, Thrust Reverser System

 E.
Access

 (1)  
Location Zone
 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

 F.
Procedure

 S 864-016-N00
 (1)  
Make sure the thrust reverser is installed with all latches adjusted and closed.

 S 494-017-N00

 (2)  
If the core cowl sling (3) is not installed, do the steps that follow:

 WARNING: USE CAUTION WHEN YOU REMOVE THE CORE COWL PANEL IN HIGH
_______ WINDS. IF YOU DO NOT USE CAUTION, YOU CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 WARNING: DO NOT HOLD THE CORE COWL PANEL WITH THE HOLD-OPEN RODS IF
_______ THE WIND VELOCITY IS MORE THAN 60 KNOTS. THE HOLD-OPEN ROD CAN HAVE A FAILURE IN HIGH WINDS, WHICH CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (a)  
Remove the bolts (7 and 10) from the core cowl panel (4).

 (b)  
Put the core cowl sling (3) on the core cowl panel (4).
　
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