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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
A
Rear Engine Vents and Drains Location
Figure 2 (Sheet 1)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
3. FUEL SUPPLY AND MANIFOLDSHROUD DRAIN1 OR FUEL SUPPLY DRAIN 2
4. HPT CLEARANCE CONTROL VALVE DRAIN AND RIGHT
1. LEFT VSV ACTUATOR VSV ACTUATOR SEAL AND
SEAL AND SHROUD SHROUD DRAIN
DRAIN
5. CIT SENSOR SHROUD DRAIN
2. VBV FUEL GEAR MOTOR SEAL DRAIN
11. FUEL PUMP PAD DRAIN
FWD 10. STARTER PAD DRAIN
7. MEC CASING DRAIN 9. MEC SHAFT DRAIN6. FORWARD
SUMP DRAIN 8. MAIN OIL/FUEL HEAT EXCHANGER DRAIN
REAR DRAIN SYSTEM
B
1 ENGINES WITHOUT CFMI SB 73-116
2ENGINES WITH CFMI SB 73-116
Rear Engine Vents and Drains Location Figure 2 (Sheet 2)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
2. RIGHT SERVICE DISCONNECT BOX (STRUT) DRAIN
SEEA
FWD
1. LEFT SERVICE DISCONNECT BOX (STRUT) DRAIN
A
Rear Service Disconnect Box (Strut) Drains Location
Figure 3
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
~.......................................................................... | DRAIN NUMBER | DRAIN DESCRIPTION | ............................................................................ | (1) | Left Variable Stator Vane (VSV) Actuator Seal | | | and Shroud Drain | ............................................................................ | (2) | Variable Bleed Valve (VBV) Fuel Gear motor Seal | | | Drain | ............................................................................ | (3) | ENGINES PRE CFMI SB 73-116; | | | Fuel Supply and Manifold Shroud Drain | | | ENGINES POST CFMI SB 73-116; | | | Fuel Supply Drain | ............................................................................ | (4) | High Pressure Turbine (HPT) Clearance Control Valve | | | Drain and Right VSV Actuator Seal and Shroud Drain | ............................................................................ | (5) | Compressor Inlet Temperature (CIT) Sensor Shroud | | | Drain | ............................................................................ | (6) | Forward Sump Drain | ............................................................................ | (7) | Main Engine Control (MEC) Casing Drain | ............................................................................ | (8) | Main Oil/Fuel Heat Exchanger Drain | ............................................................................ | (9) | Main Engine Control (MEC) Shaft Drain | ............................................................................ | (10) | Starter pad drain | ............................................................................ | (11) | Fuel Pump Pad Drain | 2.................…........................................................1
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