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75-31-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
VARIABLE STATOR VANE ACTUATOR - REMOVAL/INSTALLATION
____________________________________________________
1. General
_______
A. This procedure gives the instructions to remove and install the actuator for the variable stator vane.
B. The actuator is installed on the forward case of the high pressure compressor (HPC) at the 3:30 o'clock position.
C. You can get access to the actuator through the right thrust reverser.
TASK 75-31-02-004-001-N00
2. Remove the Variable Stator Vane Actuator (Fig. 401)
________________________________________
A. Special Tools and Equipment
(1)
PWA 85688 - Puller Jackscrew, Pratt & Whitney,
Commercial Products Division, 400
Main Street, East Hartford, CT
06108
B.
Standard Tools and Equipment
(1)
Container - 5 U.S. gallon (19 liter) capacity,
used to catch the fuel
C.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 71-11-04/201, Fan Cowl Panels
(3)
AMM 71-11-06/201, Core Cowl Panels
(4)
AMM 78-31-00/201, Thrust Reverser System
D.
Access
(1)
Location Zone
412 Engine 1 - HPC Fwd Case 3:30 o'clock
422 Engine 2 - HPC Fwd Case 3:30 o'clock
432 Engine 3 - HPC Fwd Case 3:30 o'clock
442 Engine 4 - HPC Fwd Case 3:30 o'clock
(2)
Access Panel
416 Right Thrust Reverser Half - Engine 1
426 Right Thrust Reverser Half - Engine 2
436 Right Thrust Reverser Half - Engine 3
446 Right Thrust Reverser Half - Engine 4
E.
Prepare to Remove the Variable Stator Vane Actuator
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-003-N00
(2)
Make sure the applicable FUEL CONTROL switch is in the CUTOFF position.
S 864-002-N00
(a) Install the DO-NOT-OPERATE tag.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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
INTERMEDIATE CASE
BELLCRANK
FUEL FLOW TRANSMITTTER
13. DRAIN HOSE
28. TUBE TEE NUT
29. DRAIN TUBE
34. UNION
7. VARIABLE STATOR
30. CLAMP
FUEL VANE ACTUATOR
FUEL 31. SCREWPUMP SEE BMETERING 32. NUT(REF) UNIT 33. WASHER
FWD
A
Variable Stator Vane Actuator Installation
Figure 401 (Sheet 1)
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75-31-02
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2. COTTER PIN LEFT BELLCRANK LEVER
23. COTTER PIN (2 LOCATIONS) 3. WASHER RIGHT BELLCRANK LEVER
25. BOLT
(2 LOCATIONS) 2
4. SHOULDER BOLT
24A. WASHER
(2 LOCATIONS)
1. NUT 5. ROD END BEARING
24. NUT
(2 LOCATIONS)
6. KEY
22. NUT WASHER
21. SEAL
20. GROUND 7. VARIABLE STATOR CABLE VANE ACTUATOR
23. COTTER PIN (2 LOCATIONS)
24. NUT (2 LOCATIONS)
19. BOLT
18. EEC
1
ELECTRICAL
8. PACKING CONNECTOR
17. EEC ELECTRICAL CONNECTOR25. BOLT
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