(2)
Install the ADP turbine drive for system 1 with auxiliary hydraulic pump and system 4.
B.
The installation task also contains a test of the turbine drive
installation.
C.
The ADP turbine drive is on the aft side of the torque box in the aft nacelle strut. You can get access to the ADP turbine drive through the fairing doors on the trailing edge of the strut.
D.
Before you remove the turbine drive, you must remove the air-driven hydraulic pump.
E.
In system 1 with the auxiliary hydraulic pump and system 4, you must also remove the auxiliary hydraulic pump and a bracket before you can remove the turbine drive.
TASK 29-11-08-004-001
2. System 1 Air-Driven Pump Turbine Drive Removal (Fig. 401)______________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
(3)
AMM 29-11-17/401, Air-Driven Pump
(4)
AMM 36-00-00/201, Pneumatic System
(5)
AMM 36-11-24/401, Air-Driven Pump Pneumatic Duct Screen Assembly
(6)
AMM 54-62-00/201, Nacelle Strut Access Panels
B.
Access
(1)
Location Zone
454 System 1 - Strut Aft Fairing
(2)
Access Panel
454A Trailing Edge Fairing Doors - System 1
C.
Procedure
S 014-002
(1)
Open the fairing doors on the trailing edge of the strut (AMM 54-62-00/201).
(2)
Supply electrical power (AMM 24-22-00/201).
(3)
Put the HYD DEMAND 1 switch on the P5 panel in the OFF position.
S 864-003
S 864-004
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29-11-08
ALL ú ú 15 Page 401 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
ENGINE NACELLE STRUT
SEE A
SEE C
1. ELECTRICAL
CONNECTOR
7. CLAMP
2. TURBINE
DRIVE
PNEUMATIC
DUCT 3. BOLT
4. WASHER
(3 NECESSARY)
5. NUT
(2 LOCATIONS)
6. SUPPORT ROD
(2 LOCATIONS)
AIR-DRIVEN
PUMP
FWD
A
Air-Driven Pump Turbine Drive Installation For System 1
Without Auxiliary Hydraulic Pump
Figure 401 (Sheet 1)
A03089
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ALL ú ú 02 Page 402 ú Feb 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
12. BOLT
RIGHT SIDE MOUNTING FLANGE
NUTPLATE
SEE B NUTPLATE AFT STRUT BULKHEAD
A A CASCADE 10. TURBINE EXHAUST (7 LOCATIONS) 11. SCREW FWD 13. BUSHING 14. BOLT MOUNTING FLANGE LEFT SIDE
CONNECTOR 9. ELECTRICAL TURBINE DRIVE FORWARD MOUNTS C
SEE C
DRIVE 2. TURBINE (2 LOCATIONS) 6. SUPPORT ROD AIR-DRIVEN PUMP
CASCADE SEAL CASCADE
FWD EXHAUST FLANGE TURBINE DRIVE
B A-A
Air-Driven Pump Turbine Drive Installation Figure 401 (Sheet 2) for System 1 Without Auxiliary Hydraulic Pump
A03152
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