(b)  
Disconnect the connector (on the right extension harness) from the left junction box with the fork wrench.

 (c)  
Put protective caps on the connectors and the receptacles.

 S 024-040-C02
 (3)  Do these steps to remove the probes:
 (a)  
Remove the two bolts that attach each probe to the engine boss.

 (b)  
Carefully remove the probes from the engine.

 (c)  
Put protective caps on the probes and the engine bosses.

 TASK 77-21-01-404-025-C02
 11. Right EGT Extension Harness Installation
________________________________________
 A. Equipment
 (1)  Fork Wrench - AN8508-14, Snap-on Tools Company, 8049-28th St Kenosha, WI 53140
 B. Consumable Materials
 (1)  D00601, Grease, (CP2101) graphite - GP460, Aeroshell 8
 C. References
 (1)  
AMM 71-11-02/201, Fan Cowl Panels

 (2)  
AMM 77-21-00/501, EGT Indicating System

 (3)  
AMM 78-31-00/201, Thrust Reverser System

 D. Access
 (1)  Location Zones
 504 Left Engine - Left Side
 505 Left Engine - Right Side
 604 Right Engine - Left Side
 605 Right Engine - Right Side

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 9 PROBE EGT SYSTEM (RIGID MOUNT) ú  77-21-01
 ú CONFIG 2 ú C02 Page 428 ú Mar 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(2)  Access Panels
 5738L Left Thrust Reverser - Left Engine
 5739L Right Thrust Reverser - Left Engine
 5838R Left Thrust Reverser - Right Engine
 5839R Right Thrust Reverser - Right Engine

 E.  Procedure
 S 424-041-C02
 (1)  Do these steps to install the probes (Fig. 405):
 (a)  
Remove protective caps from the probes and the engine bosses.

 (b)  
Carefully install the probes in the engine bosses.

 1)  Install the lower probe, then the center probe, and then the upper probe.

 (c)  
Apply a thin layer of antiseize compound to the bolts that attach the probes.

 (d)  
Install the two bolts to attach each probe. 1) Tighten the bolts to 100-110 pound-inches (11.5-12.5 N.m). 2) Install a lockwire or a safety cable on each bolt.

 S 434-166-C02
 (2)  Do these steps to attach the connectors:
 (a)  
Remove protective caps from the connectors and the receptacles.

 (b)  
Connect the connector (on the right extension harness) to the left junction box.

 (c)  
Connect the connector (on the right extension harness) to the right junction box. 1) Tighten the two connectors with the fork wrench to

 170-190 pound-inches (19-21 N.m). 2) Install a lockwire or a safety cable on the two connectors.
 S 424-043-C02
 (3)  Do these steps to attach the harness:
 (a)  
Apply a thin layer of antiseize compound to the bolts.

 (b)  
Install the bolt, the nut, and the loop clamp that attach the harness to the engine brackets at two locations. 1) Tighten the bolts and the nuts to 30-35 pound-inches

 (3.5-4 N.m).

 (c)  
ENGINES POST-CFMI-SB 77-009; Install the bolt, the nut, and the two loop clamps that attach the harnesses together and to the engine brackets. 1) Tighten the bolt and the nut to 25-30 pound-inches

 (3-3.5 N.m).

 (d)  
ENGINES PRE-CFMI-SB 77-009; Install the bolt, the nut, and the clamp half that attaches the harnesses together and to the engine brackets. 1) Tighten the nut to 30-35 pound-inches (3.5-4 N.m).

 F.  Put the Airplane Back to Its Usual Condition
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 9 PROBE EGT SYSTEM (RIGID MOUNT) ú  77-21-01
 ú CONFIG 2 ú C02 Page 429 ú Mar 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
　
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