26-17-00
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A 737-300/400/500MAINTENANCE MANUAL
Wheel Well Overheat Detection System Troubleshooting Chart (No Alarm)
Figure 102 (Sheet 1)
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26-17-00
ALL ú ú 01 Page 103 ú Mar 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E83773
A 737-300/400/500MAINTENANCE MANUAL
MAIN WHEEL WELL CENTER CONDUCTOR RESISTANCE TABLE A
AIRPLANES WITH SB 65-52808-26-01
Wheel Well Overheat Detection System Troubleshooting Chart (No Alarm)
Figure 102 (Sheet 2)
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E83777
A
737-300/400/500MAINTENANCE MANUAL
WHEEL WELL OVERHEAT DETECTION SYSTEM - ADJUSTMENT/TEST
______________________________________________________
1. General
_______
A. There is one task in this section:
(1) Do a test of the wheel well overheat detection system.
B. This procedure does a test of the lights, the components, and the wires ú that are a part of the wheel well overheat detection system.
C. A test of the other lights, the components, and the wires that are
specific to the wing and lower aft body overheat detection system is done ú in AMM 26-18-00/501.
TASK 26-17-00-705-001
2. Wheel Well Overheat Detection System Operational Test
_____________________________________________________
A. References
(1) AMM 24-22-00/201, Manual Control
B. Access
(1) Location Zones
101 Control Cabin - Left
102 Control Cabin - Right
C. Prepare for the Test
S 865-002
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-003
(2)
Open these circuit breakers:
(a) P6 Load Control Center - Right 1) FIRE PROTECTION DETECTION ENG NO. 1 2) FIRE PROTECTION DETECTION ENG NO. 2 3) FIRE PROTECTION DETECTION APU
S 865-004
(3) Make sure these circuit breakers are closed:
(a) P6 Load Control Center - Right
1) MASTER WARN & CONTROL
2) OVHT WHL WELL WNG BDY
D. Do the test
S 715-024
(1) Do the test of the wheel well overheat detection system operation.
(a)
Push the WHEEL WELL light on the engine and APU fire control (P8-1) panel.
(b)
Make sure that the WHEEL WELL light on the P8-1 panel comes on.
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A
737-300/400/500MAINTENANCE MANUAL
S 715-025
(2) Do the test of the BELL CUTOUT switch for the wheel well overheat detection system.
(a)
Move the TEST switch on the P8-1 panel to the OVHT/FIRE position and hold.
(b)
Make sure that the indications are as follows:
1) The two FIRE WARN lights come on.
2) The WHEEL WELL light on the P8-1 panel comes on.
3) The alarm bell operates.
(c)
Push the BELL CUTOUT switch on the P8-1 panel.
(d)
Make sure that the indications are as follows:
1) The alarm bell makes no sound.
2) The two FIRE WARN lights go off.
3) The WHEEL WELL light stays on.
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