(g)  
6C15 ENG 4 PERF SOL PWR A

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 79-21-01
 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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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 79-21-01
 ALL  ú ú N01 Page 426 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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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