(b)  
Hold the element so it does not bend.

 (c)  
Put the element fitting into the bracket on the heat shield, then clamp sensing element into position.

 (3)  
Install the jamnuts.

 S 434-100
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737-300/400/500MAINTENANCE MANUAL
 S 034-101
 CAUTION:_______ ONLY USE ISOPROPYL OR METHYL ALCOHOL OR ACETONE TO CLEAN
 CONNECTORS.  DO NOT USE OTHER CLEANING SOLVENTS.  COMMERCIALLY
 AVAILABLE CONTACT CLEANERS MAY CONTAIN CHLORIDES WHICH PROMOTE

 CORROSION IN SEALED AREAS, AND SHOULD NOT BE USED.
 (4)  
Remove the protective caps from the electrical connectors and make sure the detector and the connectors are clean. If contamination is found refer to the wiring diagram manual (AMM 20-30-31/201) to clean them.

 S 644-102

 (5)  
Apply a very light coat of DC-4 silicone grease to the copper sealing gasket on the plug connector.

 NOTE: Do not get grease in the connector, on connector pins,
____ or on the contacts.
 S 434-096
 (6)  
Carefully connect the electrical connectors.

 S 434-097

 (7)  
Tighten the electrical connectors to a torque of 50-70 pound-inches.

 S 434-098

 (8)  
Lockwire the element end fittings, jamnuts and electrical connectors together.

 S 424-099

 (9)  
Tape the loose end of the sensing element cable to the heat shield and muffler assembly.

 S 414-055

 (10)
 Install the APU aft fairing (AMM 49-81-31/401).

 S 434-103
 CAUTION:_______ONLY USE METHYL ALCOHOL OR ACETONE TO CLEAN CONNECTORS. DO NOT USE OTHER CLEANING SOLVENTS. COMMERCIALLY AVAILABLE CONTACT CLEANERS MAY CONTAIN CHLORIDES WHICH PROMOTE CORROSION IN SEALED AREAS, AND SHOULD NOT BE USED.
 (11) Remove the protective caps from the electrical connectors and make sure the detector and the connectors are clean. If contamination is found refer to the wiring diagram manual (AMM 20-30-31/201) to clean them.
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737-300/400/500MAINTENANCE MANUAL
 S 644-090
 (12) Apply a very light coat of DC-4 silicone grease to the copper sealing gasket on the plug connector.
 NOTE: Do not get grease in the connector, on connector pins or
____
 the contacts.

 S 424-091
 (13)
 Carefully connect the electrical connectors.

 S 434-092

 (14)
 Tighten the electrical connectors to 50-70 pound-inches.

 S 424-093

 (15)
 Connect the cable leading to overheat sensing element.

 S 434-094

 (16)
 Clamp the cable in place.

 S 734-056

 (17)
 Do the APU fire detection system test (AMM 26-15-00/501).

 S 414-057

 (18)
 Install the drip pan.

 S 434-058

 (19)
 Lockwire the end fittings, jamnuts and electrical connectors together.

 S 414-069

 (20)
 Install the APU aft fairing (AMM 49-81-31/401).

 S 734-070

 (21)
 Do the APU fire detection system test (AMM 26-15-00/501).

 S 414-071

 (22)
 Install the drip pan.

 E. Return Airplane to Normal Configuration
 S 434-059
 (1)
Install the APU lower shroud.

 (2)
Remove the door support rods.

 (3)
Close the APU access door.

 S 034-060
 S 414-061
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