(e)
Move the LIGHTS switch on the pilots' center panel (P2) to the BRT position (while the OVHT TEST switch is held).
(f)
Make sure that the intensity of the lights is bright.
(g)
Push one of the two MASTER CAUTION lights.
(h)
Make sure that the MASTER CAUTION lights and the AIR COND annunciator light go off.
(i)
Release the OVHT TEST switch.
(j)
Make sure that the two WING-BODY OVERHEAT lights on the P5-10 panel go off.
E. Put the Airplane Back to its Usual Condition
S 865-014
(1) Remove electrical power if it is no longer necessary (AMM
24-22-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-18-00
ALL ú ú 01 Page 502 ú Jul 15/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
WING AND LOWER AFT BODY OVERHEAT DETECTION SENSING ELEMENT -
____________________________________________________________ REMOVAL/INSTALLATION
____________________
1. General_______
A. This section contains six tasks. The first task is the removal of the overheat sensor element in the wing and lower aft body. The second task is the installation of the sensor element. The third task is the removal of the aft keel beam overheat detection element. The fourth task is the installation of the aft keel beam overheat detection element. The fifth task is the removal of the right wing leading edge overheat detector. The sixth task is the installation of the right wing leading edge overheat detector.
B. The minimum element bend radius is one inch. The best bend radius is three inches.
C. The sensor element must be straight and away from the connector for one inch before bending.
TASK 26-18-11-034-001
2. Remove the Wing and Lower Aft Body Overheat Detection Sensor Element____________________________________________________________________ (Fig. 401)
A. Equipment
(1) Bonding meter (AMM 20-22-01/601)
B. References
(1)
SWPM 20-20-00, Standard Wiring Practices Manual
(2)
AMM 26-18-00/201, Wing and Lower Aft Body Overheat Detection System
(3)
AMM 26-18-00/501, Wing and Lower Aft Body Overheat Detection System
C. Access
(1) Location Zones
218 Aft Cargo
303/403 Wing Inboard Leading Edge
D. Procedure
S 014-002
(1)
Open the OVHT WHL WELL WING BDY circuit breaker on panel P6-2.
S 034-029
(2)
Disconnect the electrical connectors at each end of the sensor element.
S 024-003
(3)
Put covers on the open end of the electrical connectors with tape or caps to prevent damage.
S 024-004
(4)
Start at one end and remove the sensor element from each mounting clip.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
DETECTORS OVERHEAT LEFT AIR DETECTOR
CONDITIONING
PACK OVERHEAT
DETECTORS
Wing and Lower Aft Body Overheat Detection Sensing Element Installation
Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-18-11
ALL ú ú 01 Page 402 ú Nov 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
FWD
RIGHT WING LEADING EDGE OVERHEAT DETECTOR
SHORT DETECTOR ELEMENT LONG DETECTOR ELEMENT
Wing and Lower Aft Body Overheat Detection
Figure 402
E36612
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