(2)
AMM 71-11-06/201, Core Cowl Panels
(3)
AMM 72-34-03/401, Fan Exit Liner Segment
(4)
AMM 78-31-00/201, Thrust Reverser System
(5)
IPC 75-33-04 Fig. 1
B.
Access
(1)
Location Zone 412 Engine 1 - Intermediate Case Aft Face 10 o'clock 422 Engine 2 - Intermediate Case Aft Face 10 o'clock 431 Engine 3 - Intermediate Case Aft Face 10 o'clock 442 Engine 4 - Intermediate Case Aft Face 10 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
445 Left Thrust Reverser Half - Engine 4
C.
Prepare to Remove the Solenoid
S 864-002-N00
(1) For the applicable engine, open this circuit breaker and install the DO-NOT-CLOSE tag:
(a) P6 Main Power Distribution Panel
1) 6F15 ENG 1 PERF SOL PWR A/APU ENG START
or ENG 1 PERF SOL PWR A
2) 6F16 ENG 1 PERF SOL PWR B
3) 6E15 ENG 2 PERF SOL PWR A
4) 6E16 ENG 2 PERF SOL PWR B
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ENGINES WITHOUT PHASE 3 CHANGES ú
75-33-03
ú ú N04 Page 401 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
INTERMEDIATE
CASE FAN EXIT LINER SEGMENT
ACCESSORY COOLING TUBE
SEE A
SIGNAL TUBE HPC SECONDARY FLOW CONTROL VALVE AND TURBINE VANE AND 15TH-STAGE
BLADE COOLING AIR VALVE AIR SUPPLY TUBE SOLENOID
MOUNT LUG SEE B (2 LOCATIONS)
LUG (2 LOCATIONS)
A FWD
BOLT
CAP BOLT
CAP ADAPTER ACCESSORY COOLING TUBEADAPTER
GASKET
NUT BOLT
GASKET BRACKET
BOLT
EEC ELECTRICAL GASKET CONNECTOR
ADAPTER
FWD
GASKET
TUBE NUT BOLT HPC SECONDARY FLOW
GASKETCONTROL VALVE AND
ADAPTER
TURBINE VANE AND BLADE COOLING AIR VALVE SOLENOID TUBE NUT
ADAPTER
B
HPC Secondary Flow Control Valve and Turbine Vane
and Blade Cooling Air Valve Solenoid Installation
Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ENGINES WITHOUT PHASE 3 CHANGES ú
75-33-03
ú ú N03 Page 402 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
5) 6D15 ENG 3 PERF SOL PWR A
6) 6D16 ENG 3 PERF SOL PWR B
7) 6C15 ENG 4 PERF SOL PWR A
8) 6C16 ENG 4 PERF SOL PWR B
S 014-026-N00
(2) Open the left fan cowl panel (AMM 71-11-04/201).
S 044-038-N00
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______
OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF
THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO
EQUIPMENT.
(3)
Do this procedure: Thrust Reverser Deactivation for Ground
Maintenance (AMM 78-31-00/201).
S 014-027-N00
(4)
Open the left core cowl panel (AMM 71-11-06/201).
S 014-039-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______
THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS,
INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(5)
Open the left thrust reverser (AMM 78-31-00/201).
S 014-004-N00
(6)
Remove the No. 7 segment of the fan exit liner (AMM 72-34-03/401).
D.
Procedure
S 024-042-N00
(1) Remove the solenoid:
(a)
Disconnect the EEC electrical connector from the solenoid.
1) Install protection caps on the EEC electrical connector and the receptacle on the solenoid.
(b)
Disconnect the two signal tubes and the 15th-stage air supply tube from the solenoid.
(c)
Remove the bolts which attach the solenoid and bracket to the lugs on the intermediate case.
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