CAUTION:_______BE CAREFUL WHEN YOU REMOVE THE SHOULDER BOLT. THE SHOULDER BOLT HAS LEFT-HAND THREADS. DAMAGE TO THE SHOULDER BOLT OR THE ACTUATOR CAN OCCUR IF YOU TURN THE BOLT IN THE INCORRECT DIRECTION.
(h)
Hold the piston shaft hex-head and remove the shoulder bolt (2).
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(i) Remove the bolts (13) and washers (14) which attach the actuator (1) to the intermediate case.
CAUTION: MAKE SURE THE CRIMPED LOCKING CUP AND RETAINING NUT DO NOT
_______ LOOSEN FROM THE PISTON SHAFT WHEN YOU TURN THE PISTON SHAFT HEX-HEAD. IF THE RETAINING NUT CHANGES POSITION OR LOOSENS, THE INTERNAL ADJUSTMENT OF THE ACTUATOR CAN BE CHANGED WHICH CAN CAUSE DAMAGE TO THE 2.5 BLEED VALVE OR THE ENGINE.
(j) Turn the piston shaft hex-head counterclockwise to remove the actuator (1).
S 024-048-N00
(2) If it is necessary to replace the actuator (1), do the steps that follow:
(a)
Remove the adapters (7, 8) and packings (5, 6) from the ports of the actuator (1).
(b)
Discard the packings.
S 024-049-N00
(3) Install protection caps to the open ports of the actuator (1).
TASK 75-32-01-404-016-N00
3. Install the 2.5 Bleed Valve Actuator (Fig. 401)____________________________________
A. Special Tools and Equipment
(1)
PWA 85928 - Torque adapter, Pratt & Whitney,
Commercial Products Division, 400
Main Street, East Hartfold, CT
06108
(2)
M303, M305, or M307 Bergen Mechanical Crimper
Bergen Cable Technologies Inc
170 Gregg St
P.O. Box 1300
Lodi, NJ 07644-9982
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
B. Consumable Materials
(1)
D00390 Oil - Engine
(2)
G02334 Lockwire - AS3214-02
(3)
G02332 Ferrule - P05-292 (Optional)
(4)
G02335 Cable - Safety - P05-291 (Optional)
C.
Parts
~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | 2.5 Bleed Valve Actuator | 75-32-01 | 05 | 55 | | | 5 | Packing | | | 10 | | | 6 | Packing | | | 20 | 2.....….........…...................................…..........…......…........1
D. References
(1)
AMM 70-23-00/201, Tightening Techniques and Torque Values
(2)
AMM 70-24-05/201, Electrical Harnesses
(3)
AMM 71-00-00/501, Power Plant
(4)
AMM 71-11-04/201, Fan Cowl Panels
(5)
AMM 71-11-06/201, Core Cowl Panels
(6)
AMM 72-34-03/401, Fan Exit Liner Segment
(7)
AMM 75-32-01/501, 2.5 Bleed Valve Actuator
(8)
AMM 78-31-00/201, Thrust Reverser System
E.
Access
(1)
Location Zone 412 Engine 1 - Intermediate Case Aft Face 7 o'clock 422 Engine 2 - Intermediate Case Aft Face 7 o'clock 432 Engine 3 - Intermediate Case Aft Face 7 o'clock 442 Engine 4 - Intermediate Case Aft Face 7 o'clock
(2)
Access Panel
415 Left Thrust Reverser Half - Engine 1
425 Left Thrust Reverser Half - Engine 2
435 Left Thrust Reverser Half - Engine 3
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本文链接地址：747-400 AMM 飞机维护手册 大气 AIR 2(60)
