79-11-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
ENGINE OIL TANK - CLEANING
__________________________
 1.  General_______
 A.  This procedure contains one task, the cleaning of the screen on the
 suction tube of the oil tank.

 TASK 79-11-01-107-005-C00
 2.  Engine Oil Tank Cleaning________________________
 A.  Equipment
 (1)  Oil Service Cart - maximum output pressure 43 psig (3 bars)
 B.  References
 (1)  AMM 12-13-11/301, Engine Oil Servicing
 C.  Access
 (1)  
Location Zones
 506 Engine No. 1
 606 Engine No. 2

 (2)  
Access Panels
 5737L Fan Cowl Panel - Engine No. 1
 5837R Fan Cowl Panel - Engine No. 2

 D.  Procedure
 S 867-007-C00
 WARNING:_______DO NOT LET ENGINE OIL STAY ON YOUR SKIN. USE ENGINE OIL IN AREA WITH GOOD VENTILATION. ENGINE OIL IS POISONOUS AND CAN BE ABSORBED THROUGH YOUR SKIN. ENGINE OIL FUMES CAN IRRITATE YOUR RESPIRATORY TRACT.
 CAUTION: DO NOT LET ALKALINE CLEANING FLUID GET INTO THE ENGINE OIL.
_______ VERY SMALL QUANTITIES OF THIS FLUID CAN CHANGE THE ENGINE OIL. DAMAGE TO EQUIPMENT CAN OCCUR.
 (1)  
Obey the above Warning and Caution throughout this procedure.

 (2)  
Drain the oil tank (AMM 12-13-11/301).

 S 167-002-C00

 (3)  
Do these steps to clean the screen on the engine oil tank suction tube:

 (a)  
Put a clean container below the oil tank drain port.

 (b)  
Do one of these two steps: 1) Remove the self-sealing drain plug the oil tank (Fig. 701). a) Remove and discard the O-rings from the magnetic plug and the self sealing drain plug.

 S 847-001-C00
 2)  Remove the drain plug from the oil tank (Fig. 702). a) Remove and discard the O-ring from the drain plug.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE A
OIL TANK
O-RING
O-RING
SELF SEALING DRAIN PLUG
MAGNETIC PLUG
A
S-M56-MM-03582-00-B
Self Sealing Drain PlugFigure 701
F71675
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 79-11-01
 ALL  ú ú C01 Page 702 ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE A
OIL TANK
O-RING
DRAIN PLUG
A
S-M56-MM-03223-00-B
Drain PlugFigure 702
F71681
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE  A 
VENT TUBE  TUBE ANTI-SIPHON 
TUBE SCAVENGE LUBE 

LUBE
SUPPLY
TUBE

OIL QUANTITY TRANSMITTER
FILLER
CAP

SCUPPER
SIGHT GLASS
OIL TANK SCUPPER DRAIN FWD TUBE
A
Lube Supply Tube Location Figure 703
F71686
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