71-00-58
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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
CSD OIL
COOLER
FWD
FAN FRAME
A
CONSTANT SPEED DRIVE (CSD) OIL COOLER CHECK
1.
OPEN RIGHT FAN COWL DUCT AND THRUST REVERSER HALF (78-31-00 MP).
2.
CHECK CSD OIL COOLER FOR FOREIGN OBJECT DAMAGE (FOD) AND OIL LEAKS. IF MAJOR FOD AND/OR ANY OIL LEAKS FOUND, REPLACE CSD OIL COOLER (24-11-21).
3.
CHECK FOR CLOGGING OF COOLING AIR HOLES. IF FOUND, USE COMPRESSED AIR TO BLOW DEBRIS OUT OF AIR HOLES. CLEAN ANY DISLODGED DEBRIS FROM FAN DUCT.
4.
CLOSE FAN DUCT COWL AND THRUST REVERSER HALF (78-31-00 MP).
Constant Speed Drive (CSD) Oil Cooler Check Figure 116
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
POWER PLANT - TROUBLE SHOOTING (ENGINE CHECKS)
______________________________________________
1. General_______
A. Trouble shooting steps or procedures which appear repeatedly within trouble shooting charts and/or have a degree of complexity which require a detailed explanation or specific illustrations to accomplish are designated as engine checks. Details of the checks are contained in this section and are referred to by trouble shooting charts in other trouble shooting sections.
B. Engine checks may require special test equipment, removal of components, and/or engine operation to accomplish.
2. Engine Checks Listing_____________________
Engine Check____________ Figure Location
Fuel Pump Impeller Rotation Check Fig. 102 Fuel Filter Check Fig. 103 CDP (Air) Tube Check Fig. 104 CBP (Air) Tube Check Fig. 105 PS12 Tube/Manifold Check Fig. 106 MEC Power Lever Idle Position Check Fig. 107 Low Pneumatic Duct Pressure Check Fig. 108 Ignition System Audible Check Fig. 109 Oil Temperature Check Fig. 110 Oil Temperature Bulb Resistance Check Fig. 111 Accessory Gearbox (AGB) Excess Oil Check Fig. 112 Thrust Lever Travel Check Fig. 113 MEC Fuel Shutoff Lever Position Check Fig. 114 Fuel Nozzle Leak Check Fig. 115 Engine Oil Circuit Airflow Check Fig. 116
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71-00-59
ALL ú ú C03 Page 101 ú Jul 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
THIS PAGE INTENTIONALLY
LEFT BLANK
Not Used
Figure 101
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H51655
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FUEL PUMP IMPELLER ROTATION CHECK
1. EQUIPMENT AND MATERIALS
A. LUBRICANT - AEROLUBRIPLATE (AMM 70-10-01)
2. DO THESE STEPS TO MAKE SURE THE FUEL PUMP IMPELLER TURNS:
A. OPEN THE LEFT FAN COWL PANEL (AMM 71-11-02/201).
B. REMOVE THE LUBE FLOW SCREEN FROM THE FUEL PUMP HOUSING. DISCARD THE PACKINGS.
C. MANUALLY TURN THE N2 ROTOR (AMM 72-00-00/201). LOOK THROUGH THE LUBE FLOW SCREEN OPENING, TO MAKE SURE THAT THE IMPELLER TURNS.
D. INSTALL THE LUBE FLOW SCREEN.
(1)
INSTALL THE NEW LUBRICATED PACKINGS IN THE GROOVES ON THE LUBE FLOW SCREEN.
(2)
INSTALL THE LUBE FLOW SCREEN IN THE PUMP HOUSING. TIGHTEN THE SCREEN TO 90-110 POUND-INCHES (10.2-12.4 N.M) AND INSTALL THE LOCKWIRE.
E.
CLOSE THE LEFT FAN COWL PANEL (AMM 71-11-02/201).
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