26-18-11
 FOR THE M1204 DETECTOR  ú ú 01 Page 403 ú Nov 15/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 864-005
 (5)  
Hold the element carefully to prevent bends.

 S 034-006

 (6)
Remove the jamnut from the end fitting at each end of the sensor element and remove the end fitting from the flange fitting.

 NOTE:  Let the used sensor element stay in its position to aid correct installation of the new element. The rubber bushings can be used on the new element if they are in good condition.
 S 424-030
 (7)  
Put covers on the open ends of the end fittings with tape or caps to prevent damage.

 S 034-007

 (8)  
Carefully remove the sensor element from below the tubing and brackets.

 S 014-075

 (9)  
AIRPLANES WITH SL 26-28;
 do the following steps:

 (a)  
Remove the lacing.

 (b)  
Remove the silicone tubing.

 S 034-008
 (10) Carefully roll the sensor element into a 10-inch diameter coil.  Use tape if it is necessary.
 TASK 26-18-11-424-009
 3.  Install the Wing and Lower Aft Body Overheat Detection Sensor Element_____________________________________________________________________ (Fig. 401)
 A.  Procedure
 S 424-094
 CAUTION: DO NOT TURN, PULL, OR ATTACH THE SENSOR ELEMENT WITH A CLAMP.
_______ DO NOT MAKE SERVICEABLE KINKS, BENDS, OR DENTS STRAIGHT. IF YOU MAKE SERVICEABLE KINKS, BENDS, OR DENTS STRAIGHT, DAMAGE CAN OCCUR.
 (1)  
Carefully put the sensor element in its position.

 (2)  
Remove the caps from the end fittings.

 (3)  
Loosely install one end fitting in the flange fitting.

 S 024-011
 S 424-012
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-18-11
 ALL  ú ú 01 Page 404 ú Nov 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (4)  S 424-013Bend the sensor element to the contour of the clamps and loosely install the other end fitting.
 (5)  S 424-014Install the grommets on the sensing element so each is in the center of the mounting clip and the slit of each bushing is on the faces outside of the nearest bend.
 (6)  S 424-015Install the grommets in each mounting clip.
 (7)  S 024-016Mounting clips and grommets must attach to the element tightly.
 NOTE:  If the used sensor element is in its position as a reference,
 remove it.

 S 434-017
 (8)  
Tighten the jamnuts on the end fittings from 50 to 60 pound-inches.

 S 434-028

 (9)  
Use a lockwire on the jamnut-flange fitting and on the end fittings.

 S 754-018

 (10)
 Make sure the end fitting hex is in the hex retainer on the flange fitting before you tighten the jamnut.

 S 014-019

 (11)
 AIRPLANES WITH SL 26-28; do the steps that follow:

 (a)  Install the silicone tubing with the slit facing away from the detector bend.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-18-11
 ALL  ú ú 01 Page 405 ú Nov 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (b) Install the lacing.
 S 424-022
 (12)
 Loosen and tighten the sensor element in its position if necessary.

 S 754-020

 (13)
 Make sure the minimum clearance between the element and structure is

 0.50 inch except at mounting clips.
 S 754-023
 (14)
 AIRPLANES WITH SB 26-1060; keep a minimum clearance of 1.0 inch between the sensor and the APU bleed air ducts.

 S 414-026

 (15)
 Install the electrical connectors on the end fitting.

 S 414-027

 (16)
 Install a lockwire to the flange fitting.
　
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