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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE A
FLIGHT COMPARTMENT
EPCS MAN
78 21 81
AA BA
N2
54.3 54.3 TRA 54.3 54.3
X-BLD
12.4  12.4  SVA  12.4  12.4 
17.6  17.6  FF  0.0  18.3  102  102  BVA  102  102 
72.3  72.3  2N C  72.3  72.3 
12  12  2T  12  12 
OIL P  10.5  10.5  SP  10.5  10.5 
65  65  12  66  12.3  12.3  2P  12.3  12.3 
101.5  101.5  RP  101.5  101.5 
OIL T  30  30  SCAV  30  30 
105  105  103  107  16.3  16.3  5P  16.3  16.3 
15  15  OIL Q  19  15  60  60  AOC  60  60 
N2  N2  N2  N2  70  70  TCC  70  70 
1.2  1.2  VIB  0.5  1.2 

DATE02SEP90 GMT 18:54:04
ELECTRONIC PROPULSION CONTROL SYSTEM
AUXILIARY EICAS DISPLAY (EPCS) MAINTENANCE PAGE
A A
Oil Temperature Indication
Figure 501

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 79-34-00
 ALL  ú ú N01 Page 502 ú Oct 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A75567
NO. 3 BEARING OIL TEMPERATURE THERMOCOUPLE PROBE - REMOVAL/INSTALLATION
_______________________________________________________________________
 1.  General
_______
 A.  This procedure gives the instructions to remove and install the thermocouple probe for the oil temperature of the No. 3 bearing.
 B.  The thermocouple probe is installed in the return line for the scavenge oil of the No. 3 bearing immediately before the connection to the lubrication and scavenge oil pump.
 C.  You can get access to the thermocouple probe through the right thrust reverser.
 TASK 79-34-01-004-001-N00
 2.  Remove the No. 3 Bearing Oil Temperature Thermocouple Probe (Fig. 401)
___________________________________________________________
 A.  Standard Tools and Equipment
 (1)  
Container - 1 U.S. gallon (4 liter) capacity,
 used to catch the oil

 B.  
References

 (1)  
AMM 71-11-04/201, Fan Cowl Panels

 (2)  
AMM 71-11-06/201, Core Cowl Panels

 (3)  
AMM 78-31-00/201, Thrust Reverser System

 (4)  
AIPC 79-22-00 Fig. 10

 C.  
Access

 (1)  
Location Zone 412 Engine 1 - Main Gearbox Aft Face 6 o'clock 422 Engine 2 - Main Gearbox Aft Face 6 o'clock 432 Engine 3 - Main Gearbox Aft Face 6 o'clock 442 Engine 4 - Main Gearbox Aft Face 6 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

 D.  
Prepare to Remove the Thermocouple Probe

 S 864-015-N00
 (1)  For the applicable engine, open these circuit breakers and install the DO-NOT-CLOSE tag:
 (a)  P6 Main Power Distribution Panel
 1) 6G15 SCU ALT PWR ENG 1
 2) 6G23 ENG SCU 1

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 79-34-01
 ALL  ú ú N03 Page 401 ú Feb 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
N0. 3 BEARING 
SCAVENGE OIL 
SEE  A  RETURN LINE 
NO. 3 BEARING 
OIL TEMPERATURE 
THERMOCOUPLE PROBE 
SEE  B 
ELECTRICAL 
CONNECTOR 

LUBRICATION AND SCAVENGE OILINTEGRATED DRIVEPACKING PUMP (REF)GENERATOR (REF) FWD
A
NO. 3 BEARING OIL TEMPERATURE THERMOCOUPLE PROBE
B
No. 3 Bearing Oil Temperature Thermocouple Probe Installation Figure 401
　
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