(2)  
For the EGT thermocouple harness electrical test.

 (a)  
Test Set, Digital Temperature -Model TT1200,
 Model TT1000A (Optional),
 Barfield,
 4101 NW 29th St, Miami FL 33142

 (b)  
Ohmmeter, Wheatstone bridge type,
 resistance accuracy |0.005 ohm.

 (c)  
Megohmmeter - Model GTF-2 Gull Tester,
 Gull Airborne Instruments, Inc,
 55 Engineers Road, Smithtown NY 11787, or
 equivalent.

 ú NOTE:____Output of megohmmeter should be ú 50V DC or 100V DC.
 (d)  
Connector with test lead -MS 3459LS10SL-3S, local purchase

 (e)  
Test lead, RH harness -CFMI P/N 856A3317,
 CFM International,

 P.O. Box 15514,
 Cincinnati, OH 45215

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 77-21-00
 ALL  ú ú C03.1 Page 502 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(f)  
Test lead, LH harness -CFMI P/N 856A3318,
 CFM International

 (g)  
Fork wrench, 7/8" - AN8508-14,
 Snap-on Tools,
 Kenosha WI 53140

 C. References
 (1)  
AMM 71-11-02/201, Fan Cowl Panels

 (2)  
AMM 77-21-01/401, Exhaust Gas Temperature Thermocouple Harness

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

 D. Access
 (1)  
Location Zones
 506 Engine No. 1
 606 Engine No. 2

 (2)  
Access Panels
 5737L/5746L Engine No. 1 - Fan Cowl Assembly
 5837R/5846R Engine No. 2 - Fan Cowl Assembly
 5738L/5739L Engine No. 1 - Thrust Reverser Assembly
 5838R/5839R Engine No. 2 - Thrust Reverser Assembly

 E. Prepare to Do the System Test
 S 865-043-C00
 (1)  AIRPLANES WITHOUT EIS;
 ú  For the applicable engine, make sure that these circuit breakers are closed:
 (a)  P6 Load Control Center
 1) ENG 1 EGT IND
 2) ENG 2 EGT IND

 S 865-044-C00
 (2)  AIRPLANES WITH EIS;
 ú  For the applicable engine, make sure that these circuit breakers are closed:
 (a)  P6 Load Control Center
 1) EIS PRI 2
 2) EIS PRI 4

 S 865-058-C00
 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE THRUST REVERSER TO
_______ PREVENT THE OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO THE EQUIPMENT.
 (3)  
Do the deactivation procedure for the thrust reverser for ground maintenance (AMM 78-31-00/201).

 (4)  
Open the fan cowl panels (AMM 71-11-02/201).

 S 015-034-C00
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 77-21-00
 ALL  ú ú C03.1 Page 503 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 015-035-C00
 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS WHEN YOU OPEN THE THRUST REVERSERS, INJURIES TO PERSONS OR DAMAGE TO THE EQUIPMENT CAN OCCUR.
 (5)  Open the thrust reverser (AMM 78-31-00/201).
 F. Do the EGT Indication System Test (Fig. 501)
 S 215-040-C00
 CAUTION: THE EGT INDICATION WILL BE LESS ACCURATE IF THE ELECTRICAL
_______ CONTACTS ARE NOT CORRECTLY INSTALLED. EXAMINE THE ELECTRICAL CONTACTS.
 (1)  Examine the connector leads.
 NOTE:____The leads are alumel and chromel. The alumel lead is magnetic, negative and color coded green. The chromel is not magnetic, positive and color coded white.
　
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