737-300 400 500 AMM 飞机维护手册 ENGINE 发动机 1(24)

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
HPC Blades (1st- thru 9th-Stages) - Inspection
______________________________________________
 S 866-022-C00
 (11) Put the VSV's in the fully closed position (AMM 75-31-00/201).
 (a) If it was used, disconnect the cart.
 S 846-023-C00
 (12) Do the procedure to put the airplane back to its usual condition.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
Combustion Chamber or HPT Nozzle Guide Vanes - Inspection
_________________________________________________________
 TASK 72-00-00-216-023-C00
 5. Combustion Chamber or HPT Nozzle Guide Vanes - Inspection
_________________________________________________________
 A. General
 (1)  This task gives the data for two inspections: the combustion chamber and the HPT nozzle guide vanes. These two inspections can be done at the same time or at different times, as necessary for engine maintenance.
 B. References
 (1)  AMM 74-21-02/401, Igniter Plugs
 C. Access
 (1)  Location Zones
 506 No. 1 Engine
 606 No. 2 Engine

 D. Do the Combustion Chamber or HPT Nozzle Guide Vanes Inspection
 S 416-024-C00
 (1)  
If not already done, do the procedure to prepare the airplane for the inspection.

 S 416-025-C00

 (2)  
Remove the borescope plugs found at the 6 (S14) and 10 (S15) o'clock positions immediately forward of the fuel manifold (Fig. 606, 606C).

 S 216-026-C00

 (3)  
Do an inspection of the combustion chamber as follows:

 (a)  Put a rigid borescope (with a 90° right angle viewer and 60° field of vision) or a flexible borescope through a minimum of two ports.
 NOTE: It is not recommended to use the port at the 3 o'clock
____ position. If it is used, you must first remove the fuel tube. After the inspection, you must also do a leak check.
 (b)  
If you see damage with the rigid borescope, you must remove all of the borescope plugs and the two spark igniters.

 (c)  
If you see damage with the flexible borescope, you should examine the combustion chamber fully.

 S 986-027-C00
 (4)  Turn the borescope 360° and adjust it until you can examine these items:
 (a)  
The combustion chamber surfaces

 (b)  
The dome of the combustion chamber

 (c)  
The fuel nozzle

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
A
A
FLEXIBLE 
BORESCOPE 
FUEL 
DRAIN TUBE  MANIFOLD  SEE  D 
COMBUSTION 
CASE 
SEE  B
CONNECTOR  VANE 
AIR- OUTER 
FUEL NOZZLE  FOIL  PLATFORM 
MANIFOLD 
HINGE BRACKET 
GASKET  SEE  A  INNER PLATFORM 
RIGID 
BORESCOPE  AFT 
COMBUSTOR  SEAL 
SWIRL CUP 
BORESCOPE 
PORT 
SEE  F 
FWD 
A-A 

Combustion Chamber and High Pressure Turbine Nozzle Guide Vanes
Borescope Inspection
Figure 606 (Sheet 1)

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