72-41-00
 ALL  ú ú C01 Page 603 ú Mar 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
D.  Prepare for the Combustion Case Casing Inspection
 S 016-002-C00
 (1)  Open the left and right fan cowl panels (AMM 71-11-02/201).
 S 016-004-C00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY TO PERSONS OR DAMAGE TO THE EQUIPMENT CAN OCCUR.
 (2)  Open the left and right thrust reverser (AMM 78-31-00/201).
 E.  Make an Inspection of the Combustion Case Casing (Fig. 601)
 S 216-005-C00
 (1)  Examine the combustion case casing for damage:
 (a)  
Cracks are not serviceable.

 (b)  
Nicks, marks and scratches on the combustion case casing:

 1)  No maximum limit not more than 0.03 inch (0.76 mm) in depth after you remove all of the burrs.

 (c)  
Dents in the combustion case casing:

 1)  No maximum number not more than 0.10 inch (2.54 mm) in depth after you remove all of the burrs.

 (d)  
It is not permitted to have bends, bulges or distortion that are caused by too high of a temperature

 CAUTION: AN INDICATION OF A DAMAGED COMBUSTION LINING IS HOT SPOTS
_______ ON THE OUTER CASING. YOU MUST EXAMINE THE COMBUSTION LINING WITH A BORESCOPE (AMM 72-00-00/601).
 (e)  Hot spots (discoloration) on the combustion case casing: 1) No maximum number given the metal is not crazed or cracked.
 S 416-006-C00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU CLOSE THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (2)  
Close the left and right thrust reverser (AMM 78-31-00/201).

 (3)  
Close the left and right fan cowl panels (AMM 71-11-02/201).

 S 416-007-C00
 TASK 72-41-00-206-008-C00
 3.  General Combustion Case Inspection
__________________________________
 A.  General
 (1)  You must open the fan cowl panel and thrust reverser to get access to the combustion case.
 B.  References
 (1)  71-00-02/401, Power Plant
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 72-41-00
 ALL  ú ú C01 Page 604 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(2)  
71-11-02/201, Fan Cowl Panels

 (3)  
78-31-00/201, Thrust Reverser

 C. Access
 (1)  
Location Zones
 502/602 Left Fan Cowl Panels
 503/603 Right Fan Cowl Panels
 504/604 Left Thrust Reversers
 505/605 Right Thrust Reversers
 506 Engine No. 1 - Turbine Frame
 606 Engine No. 2 - Turbine Frame

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

 D. Prepare for the General Combustion Case Inspection
 S 016-009-C00
 (1)  Open the left and right fan cowl panels (AMM 71-11-02/201).
 S 016-010-C00
 WARNING: OBEY THE INSTRUCTIONS IN THIS PROCEDURE WHEN YOU OPEN THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY TO PERSONS OR DAMAGE TO THE EQUIPMENT CAN OCCUR.
 (2)  Open the left and right thrust reverser (AMM 78-31-00/201).
 E. Make an Inspection of the General Combustion Case (Fig. 601)
 S 216-011-C00
 (1)  Examine the forward and aft flanges on the combustion case for damage:
 (a)  Cracks in the bolt holes that point out radially: 1) One crack for each bolt hole, two for each frame.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
　
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