(g)
6C15 ENG 4 PERF SOL PWR A
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ALL ú ú N03 Page 425 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(h)
6C16 ENG 4 PERF SOL PWR B
(i)
6G1 FUEL SHUTOFF VALVE ENG 1
(j)
6G2 FUEL SHUTOFF VALVE ENG 2
(k)
6G3 FUEL SHUTOFF VALVE ENG 3
(l)
6G4 FUEL SHUTOFF VALVE ENG 4
S 794-042-N00
(3) Do the test of the fuel/oil cooler that is shown in the Power Plant Test Reference Table (AMM 71-00-00/501).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
ENGINE FUEL/OIL COOLER BYPASS VALVE SOLENOID - REMOVAL/INSTALLATION
___________________________________________________________________
1. General
_______
A. This procedure removes and installs the solenoid for the bypass valve of the fuel/oil cooler.
B. The solenoid is attached to the aft end of the bypass valve on the fuel/oil cooler. The fuel/oil cooler is installed at the 8 o'clock position on the high pressure compressor (HPC) case.
C. You can get access to the solenoid through the left thrust reverser half.
TASK 79-21-03-004-001-N00
2. Remove the Engine Fuel/Oil Cooler Bypass Valve Solenoid (Fig. 401)
_______________________________________________________
A. Standard Tools and Equipment
(1)
Container - 1 U.S. quart (1 liter) capacity, used to collect the oil
B.
References
(1)
78-31-00/201, Thrust Reverser System
(2)
IPC 79-21-02 Fig. 20
(3)
IPC 79-21-51 Fig. 05
C.
Access
(1)
Location Zone
412 Engine 1 - HPC Case 8 o'clock
422 Engine 2 - HPC Case 8 o'clock
432 Engine 3 - HPC Case 8 o'clock
442 Engine 4 - HPC Case 8 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
D.
Procedure
S 864-002-N00
(1)
For the applicable engine, open this circuit breaker on the main power distribution panel, P6, and install the DO-NOT-CLOSE tag:
(a)
6F15 ENG 1 PERF SOL PWR A
(b)
6F16 ENG 1 PERF SOL PWR B
(c)
6E15 ENG 2 PERF SOL PWR A
(d)
6E16 ENG 2 PERF SOL PWR B
(e)
6D15 ENG 3 PERF SOL PWR A
(f)
6D16 ENG 3 PERF SOL PWR B
(g)
6C15 ENG 4 PERF SOL PWR A
(h)
6C16 ENG 4 PERF SOL PWR B
(2)
Open the left thrust reverser half (Ref 78-31-00/201).
S 014-003-N00
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79-21-03
ALL ú ú N02 Page 401 ú Oct 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
MAIN OIL FILTER HOUSING
OIL FILTER DIFFERENTIALSEEA B PRESSURE 2. EEC ELECTRICAL SWITCH CONNECTOR -
CHANNEL B, W5P5
1. EEC ELECTRICAL CONNECTOR -FWD CHANNEL A, W3P5
VIEW IN THE UP DIRECTION
3. ENGINE
FUEL/OIL COOLER A
BYPASS VALVEENGINE SOLENOID, V358FUEL/OIL COOLER
BYPASS VALVE SEE E FUEL/OIL COOLER
MAIN OIL FILTER HOUSING
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