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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
TURBINE FRAME - CLEANING/PAINTING
_________________________________
 1.  General
_______
 A.  This procedure gives the instructions to clean the oil supply tube for the aft sump where it goes through the No. 6 turbine frame strut.
 B.  Use this procedure when you see signs of coking in this oil supply tube.
 C.  Refer to the procedure in AMM 72-56-00/801 for the replacement of this oil supply tube.
 TASK 72-56-00-107-028-C00
 2.  Oil Supply Tube Cleaning
________________________
 A.  Equipment
 (1)  
Jackscrews, 856A1130P11, CFM International

 (2)  
Puller adapter, 856A3419, CFM International

 (3)  
Seal fitting tool set, 856A3330, CFM International

 B.  Consumable Materials
 (1)  
Grease, Molykote G rapid (CP2104)

 (2)  
D00601 Grease, Graphite (CP2101) - GP460, Aeroshell 8

 (3)  
D00599 Oil, Engine (CP2442) - CFMI SB 79-001

 C.  References
 (1)  
AMM 78-11-01/401, Primary Exhaust Sleeve

 (2)  
AMM 78-11-02/401, Primary Exhaust Plug

 (3)  
CFMI Standard Practices Manual, 70-21-17/101).

 D.  Parts
 (1)  
ENGINES WITHOUT CFMI SB 72-437;
 Nipple, CFMI IPC 72-00-00 Fig. 28, Item 120.

 (2)  
ENGINES WITH CFMI SB 72-437;
 Nipple, CFMI IPC 72-00-00 Fig. 28, Item 120A.

 

 E.  Access
 (1)  Location Zones
 410 Left Engine
 420 Right Engine

 F.  Prepare to Clean the Oil Supply Tube
 S 017-001-C00
 (1)  
Do this task: Remove the Primary Exhaust Sleeve (AMM 78-11-01/401).

 (2)  
Do this task: Remove the Primary Exhaust Plug (AMM 78-11-02/401).

 S 037-023-C00

 (3)  
Remove the clamp, shield, bolt and nut that covers the tube union for the aft sump oil supply tube at the 6:30 o'clock position on the turbine rear frame (Fig. 701).

 S 017-002-C00
 (a)  Disconnect the the union nut.
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 72-56-00
 ALL  ú ú C01 Page 701 ú Nov 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
NO. 1 STRUT
TURBINE FRAME
A
A  AFT SUMP OIL TUBE (REF) SCAVENGE 
OVERBOARD SEAL DRAIN (REF)  B  A-A (REAR VIEW)  B  NO. 6 STRUT AFT SUMP OIL SUPPLY TUBE 
S-M56-MM-02149-01-B 
LPT FRAME 
SEE  A 
NUT 
FROM LUBRICATION UNIT  SHIELD  AFT SUMP OIL SUPPLY TUBE 
OIL SUPPLY TUBE  AFT SUMP OIL SUPPLY TUBE 
UNION NUT CLAMP  A  BOLT  TO AFT SUMP  LPT CASE  AFT SUMP OIL SCAVENGE TUBE (REF) 
6 O'CLOCK  FWD 
B-B  S-M56-MM-00216-00-B 
Aft Sump Oil Supply Tube Disconnection Figure 701

 F61452
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 72-56-00
 ALL  ú ú C01 Page 702 ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE  A 
TURBINE REAR FRAME  SEE  B 
SEAL 
OIL INLET COVER  A 
BOLT  FLANGE ASSEMBLY 
A  SEAL 
O-RING  A  BOLT 
FWD  O-RING NIPPLE  FLANGE ARRESTER 
NO. 4 AND NO. 5 BEARING OIL SUPPLY TUBE OIL SUPPLY TUBE (INSTALLED IN NO. 6 STRUT) ON SOME CFM56-3-B1/-3B-2 ENGINES AND CFM56-3C-1 ENGINES WITHOUT CFMI SB 72-437 B  BOLT 
No. 4 and No. 5 Bearing Oil Supply Tube Removal Figure 702 (Sheet 1) 

F61687
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