(a)  
Before you move each fan blade, put it at the 12 o'clock
 position.

 (b)  
Carefully push the fan blade rearward a small increment, in the hub slot.

 (c)  
Go clockwise, as seen from the front, to the adjacent fan
 blade.

 (d)  
Continue to move all of the blades rearward, one at a time, at the 12 o'clock position, until each blade is fully installed.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 72-31-02
 ALL  ú ú N01 Page 411 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
I. Put the Airplane Back to its Usual Condition
 S 094-094-N00
 (1)
Remove the PWA 85035 support fixture (Fig. 401, sheet 2).

 S 434-095-N00

 (2)
Install the blade lock (1) as follows (Fig. 401, sheet 1):

 (a)  
Put the anti-rotation pin of the blade lock with the slot in the hub.

 (b)  
With a fiber drift, start at the lock joint to fully install the blade lock.

 (c)  
Make sure the blade lock in correctly installed by measurement of the gap between the lock ends. The gap must be 0.010 -

0.060 inch (0.25 - 1.52 mm). If you can not get the correct gap measurement, you must make sure the lock is fully seated.
 S 414-096-N00
 (3)  
Install the inlet cone (AMM 72-31-01/401).

 S 094-097-N00

 (4)  
Remove the protective mat from the inner surface of the inlet cowl.

 TASK 72-31-02-404-024-N00
 5. Install 1st-Stage (Fan) Blade (Complete Set) (Fig. 401)
____________________________________________
 A. Special Tools and Equipment
 (1)  
PWA 85035 - Support Fixture, Pratt & Whitney, Commercial Products Division, 400 Main Street, East Hartford, CT 06108

 (2)  
PWA 86651 - Storage Cart, Pratt & Whitney

 B.
Consumable Materials

 (1)  
G00758 Pen - Marking, Cado Marker

 (2)  
D00651 Lubricant - Paste, Molykote G-N

 (3)  
D00247 Compound - Antigalling, Fel-Pro C-200

 C.
Parts

 ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Lock Assy (Blade Lock) | 72-31-02 | 05 | 20 | | | 2 | Blade Set (Fan Blade) | | | 5 | 2.....….........…...................................…..........…......…........1
 D. References
 (1)  AMM 72-31-01/401, Inlet Cone
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 72-31-02
 ALL  ú ú N01 Page 412 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E. Access
 (1)  
Location Zones
 412 Engine 1 - LPC Hub
 422 Engine 2 - LPC Hub
 432 Engine 3 - LPC Hub
 442 Engine 4 - LPC Hub

 F.
Install the Full Set of Fan Blades.

 S 974-098-N00
 (1)  
Put the fan blades, from the storage cart, in a sequence with one of the two procedures that follow.

 (a)  
Put the fan blades in the same sequence as removed.

 (b)  
An optional procedure is to put the fan blades in a sequence of matched moment sets. 1) With the marking pen, write the numbers 1 and 20 on the

 heaviest pair of blades. 2) Write the numbers 2 and 21 on the heaviest matched moment set of remaining fan blades. 3) Write the numbers 3 and 22 on the heaviest matched moment set of remaining fan blades. 4) Continue to write these numbers until you mark the lightest matched moment set with 19 and 38.
 S 644-112-N00
 (2)  Use one of the methods that follow to lubricate the mid-span shrouds of the blades.
 WARNING:_______DO NOT LET THE LUBRICANT TOUCH YOUR SKIN. IF YOU TOUCH THE LUBRICANT, CLEAN YOUR SKIN WITH SOAP AND WATER IMMEDIATELY. THE LUBRICANT CAN CAUSE INJURY TO YOUR SKIN.
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 發動機 ENGINE 1(147)