500 Left Wing-Body Overheat Troubleshooting Diagram
May 01/99 Figure 101 (Sheet 2) 26-18-0
Page 103
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Left Wing-Body Overheat Troubleshooting Diagram 500
26-18-0 Figure 101 (Sheet 3) May 01/99
Page 104
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DEFLECTOR LOOP D742 PINS LOOP CENTER CONDUCTOR RESISTANCE (75°F)
AFT CARGO COMPARTMENT 13 TO 27 20 ohms max
STRUT AND WING LEADING EDGE 4 TO 12 10 ohms max
FORWARD AND AFT PACK 8 TO 2 10 ohms max
FORWARD AND AFT KEEL BEAM 9 TO 29 10 ohms max
TOTAL LEFT LOOP CENTER CONDUCTOR 50 ohms max
NOTE: THE RESISTANCE MEASUREMENTS IN THIS TABLE INCLUDE CONNECTOR RESISTANCES.
LEFT LOOP CENTER CONDUCTOR RESISTANCE
(FOR AIRPLANES WITH BECO M237 COMPARTMENT OVERHEAT CONTROL UNIT)
TABLE A
500 Left Wing-Body Overheat Troubleshooting Diagram
May 01/00 Figure 101 (Sheet 4) 26-18-0
Page 105
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A90561 A90562
Right Wing-Body Overheat Troubleshooting Diagram 500
26-18-0 Figure 102 (Sheet 1) May 01/99
Page 106
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500 Right Wing-Body Overheat Troubleshooting Diagram May 01/99 Figure 102 (Sheet 2) 26-18-0 Page 106A/106B BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
DEFLECTOR LOOP D742 PINS LOOP CENTER CONDUCTOR RESISTANCE (75°F)
STRUT AND WING LEADING EDGE 10 TO 11 20 ohms max
RIGHT LOOP CENTER CONDUCTOR RESISTANCE
(FOR AIRPLANES WITH BECO M237 COMPARTMENT OVERHEAT CONTROL UNIT)
TABLE B
NOTE: THE RESISTANCE MEASUREMENTS IN THIS TABLE INCLUDE CONNECTOR RESISTANCES.
F03718
500 Right Wing-Body Overheat Troubleshooting Diagram
May 01/00 Figure 102 (Sheet 3) 26-18-0
Page 107
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A90564 A90566 A90568 A90571 A90573
Left Wing-Body Overheat Troubleshooting Diagram 500
26-18-0 Figure 103 (Sheet 1) May 01/99
Page 108
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Left Wing-Body Overheat Troubleshooting Diagram
May 01/99 Figure 103 (Sheet 2) 26-18-0
Page 109
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Right Wing-Body Overheat Troubleshooting Diagram 500
26-18-0 Figure 104 (Sheet 1) May 01/99
Page 110
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Right Wing-Body Overheat Troubleshooting Diagram
May 01/99 Figure 104 (Sheet 2) 26-18-0
Page 111
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Connector Assembly 500
26-18-0 Figure 105 Oct 20/92
Page 112
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WING AND LOWER AFT BODY OVERHEAT DETECTION SYSTEM -MAINTENANCE PRACTICES
EFFECTIVITY
Airplanes with Fenwal M237 Compartment Overheat Accessory Unit
1. General
A. This section provides the operating procedures for the electronic Fenwal compartment overheat accessory unit.
B. The following procedures are included in this section:
(1)
Local Test Procedure
(2)
Memory Read Procedure
(3)
Memory Clear Procedure
(4)
Alarm History Memory Read Procedure
(5)
Alarm History Memory Clear Procedure
2. Built-in Test Procedures
A. Prepare for Procedure
(1)
Provide electrical power (Ref 24-22-00 MP).
(2)
Ensure the following circuit breakers on the P6 panel are closed:
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