This CFMI publication is for Training Purpose Only. The information is accurate at the time of compilation; however, no update service will be furnished to maintain accuracy. For authorized maintenance practices And specifications, consult the pertinent maintenance publications. The information (including technical data) contained in this document is the property of CFM International (GE and SNECMA). It is disclosed in confidence, and the technical data therein is exported under a U.S. Government license. In addition, the technical data therein and the direct product of those data, may be diverted, transferred, exported or disclosed in any manner not provided for by the license without the prior written approval of both the U.S. Government and CFM International CFMI PROPRIETARY INFORMATION Page 1
CFMI PROPRIETARY INFORMATION Page 2
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Rear Spinner Cone Elliptical shape prevents ice formation Abradable Liner Balance the low pressure system Ps12 Sensing Port (4) Supplies engine serial number, thrust rating and takeoff rating Engine Data Plate Supplies high voltage power to the igniters Balance Screws Supplies sound suppression Forward Acoustical Panel Prevents direct contact of fan blade into the case during engine operation Ignition Exciter (2) Electronic over-ride of the MEC Power Management Control (PMC) Static air pressure from static port to Ps12 manifold T12 Fan Inlet Sensor (stowed) Fan inlet temperature to PMC Front Spinner Cone Axial retention of fan blades and provision for balance screw placement CFM56-3 CFMI PROPRIETARY INFORMATION Page 3
CFMI PROPRIETARY INFORMATION Page 4
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Fan Frame Left Hand Ignition Lead Air Manifold Transmits high voltage from the upper exciter to the 8 o clock igniter Supplies cooling air to the right and left ignition lead conduit for lead cooling Front section shouldered to give fan blade containment Fan Case 1 of 2 main engine structural frames Right Hand Ignition Lead Used for engine lifting Front Lifting Trunnion Transmits high voltage from the lower exciter to the 4 o clock igniter CFMI PROPRIETARY INFORMATION Page 5
CFMI PROPRIETARY INFORMATION Page 6
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT J2 Connector Access PLA gain adjustment J5 Connector Input signal from the flight deck J4 Connector Monitor connector for test J3 Connector Input signal for N1, T12, and PLA output signal for MEC torque motor Cover Plate PMC Input power supplied by the control alternator Ps12 Signal line Air signal from Ps 12 manifold to PMC CFMI PROPRIETARY INFORMATION Page 7
CFMI PROPRIETARY INFORMATION Page 8
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Visual Oil Quantity Window Oil Tank Anti-Siphon Line Supplies oil overflow containment during servicing Prevents oil tank siphoning after engine shutdown Oil Scupper To support the engine on the ground Fan Frame Ground Handling Mount (Right Hand) Gravity Fill Oil Cap Oil Tank Vent Line To balance internal sump pressures Supplies visual inspection of oil tank service limits Seals oil tank and allows for servicing and oil sampling Oil Tank Quantity Transmitter Transmit oil tank quantity to flight deck CFMI PROPRIETARY INFORMATION Page 9
CFMI PROPRIETARY INFORMATION Page 10
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Oil Tank Pressure Fill and Overflow Ports Oil Scavenge Return Line Supplies N1 speed signal to PMC and flight deck Supplies oil from oil tank to lube unit pressure pump Oil Tank Storage of engine lubrication oil Lube Unit Supply Line N1 Speed Sensor Supplies scavenge oil return from servo heater to oil tank Supplies remote pressure servicing of the oil tank CFMI PROPRIETARY INFORMATION Page 11
CFMI PROPRIETARY INFORMATION Page 12
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Aft Acoustical Panel Cooling of CSD/IDG oil Mid Acoustical Panel Sound Suppression CSD/IDG Oil Cooler Pad Air directed to the aircraft generator for cooling Generator Cooling Inlet Sound suppression Outlet Guide Vanes (80) Points fan discharge air flow in a straight path CFMI PROPRIETARY INFORMATION Page 13
CFMI PROPRIETARY INFORMATION Page 14
IDENTIFY THE LINE, ACCESSORY OR COMPONENT Alternate Vibration Sensor Pad SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies HPC bleed air to the HPT shroud to increase engine efficiency T2.5 (CIT) Sensor (Inside Frame) Supplies compressor inlet temperature to MEC Air Ignition Tube High Pressure Turbine Clearance Control Valve (HPTCCV) VSV Actuator Rig Pin Hole (Right Side) Electrical Connector, Bearing Vibration Sensor Igniter - Lower Right Hand Side Combustor Case VSV Actuation Connecting Links Supplies static rigging of variable stator vane actuator to the system Ignite fuel/air mixture and BSI port S10 Connects No. 1 bearing vibration sensor with aircraft To connect each VSV actuation ring Alternate No. 1 bearing vibration sensor mounting pad Supplies cooling air from the booster to the air manifold CFMI PROPRIETARY INFORMATION Page 15
CFMI PROPRIETARY INFORMATION Page 16
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Borescope Port S7 Borescope Port S9 Borescope Port S6 Borescope Port S3 BSI stage 8 trailing edge and stage 9 leading edge HPC BSI stage 5 trailing edge and stage 6 leading edge HPC BSI stage 6 trailing edge and stage 7 leading edge HPC BSI stage 1 trailing edge and stage 2 leading edge HPC Borescope Port S1 BSI IGV and leading edge stage 1 HPC Borescope Port S5 Borescope Port S2 Borescope Port S4 Borescope Port S8 BSI stage 2 trailing edge and stage 3 leading edge HPC BSI stage 4 trailing edge and stage 5 leading edge HPC BSI stage 3 trailing edge and stage 4 leading edge HPC BSI stage 7 trailing edge and stage 8 leading edge HPC CFMI PROPRIETARY INFORMATION Page 17
CFMI PROPRIETARY INFORMATION Page 18
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT IGV Actuation Half Ring Stage 2 VSV scheduling Stage 3 Actuation Half Ring Connects turbine frame bearing vibration sensor to aircraft Stage 2 Actuation Half Ring IGV angle scheduling Stage 1 Actuation Half Ring Stage 3 VSV scheduling Electric Connector, Bearing Vibration Sensor Stage 1 VSV scheduling CFMI PROPRIETARY INFORMATION Page 19
CFMI PROPRIETARY INFORMATION Page 20
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Fuel Nozzle (20) Supplies fuel to the combustion chamber Shrouded Fuel Manifold Supplies stage 9 bleed air to the HPTCCV HPC Stage 9 Bleed Tap Supplies fuel to the fuel nozzles Bleed Bias Sensor (CBP) Senses use of customer bleed air HPTCCV Discharge Manifold Supplies stage 5, stage 9, or mixed bleed air to HPT shroud CFMI PROPRIETARY INFORMATION Page 21
CFMI PROPRIETARY INFORMATION Page 22
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Turbine Frame Distribution Box LPT Case Cooling Supplies fan discharge air to LPT Case for cooling Prevents flame propagation in the center vent tube LPT Case Cooling Manifold Supports the engine on the ground Turbine Frame Ground Handling Mount Supplies fan discharge air to LPT case cooling manifold Flame Arrestor Connects EGT system to flight deck indicator T4.95 (EGT) Junction Connector Second structure frame of engine T4.95 (EGT) Thermocouple Probes (9) Sense exhaust gas temperature CFMI PROPRIETARY INFORMATION Page 23
CFMI PROPRIETARY INFORMATION Page 24
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Borescope Port S22 Scavenge return of oil from aft sump to lube unit Aft Sump Oil Scavenge Line BSI stage 3 leading edge and stage 2 trailing edge LPTR Borescope Port S17 Supplies oil to aft sump from lube unit Aft Sump Supply Line Borescope Port S21 BSI HPTR trailing edge and stage 1 LPTR leading edge BSI stage 4 leading edge and stage 3 trailing edge LPTR CFMI PROPRIETARY INFORMATION Page 25
CFMI PROPRIETARY INFORMATION Page 26
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Low Pressure Turbine Stator Case Supplies stage 5, stage 9, and mixed bleed air to the HPT shroud HPC Stage 9 Bleed Port (4) Support the HPT shrouds in the HPTR area HPC Stage 5 Bleed Manifold (4) LPT Stage 1 Cooling Stage 9 customer bleed air HPT Shroud Support Supplies fuel to left hand side nozzles Fuel Manifold (Left Hand Side) Connect EGT system to flight deck indicator T4.95 (EGT) Junction Connector Transmits vibration signal from the turbine frame sensor to connector Turbine Frame Vibration Sensor Cable Enclose the four LPT stages HPTCCV Discharge Manifold Borescope Port S18 Supplies stage 5 bleed air for stage 1 LPT nozzle cooling BSI HPTR trailing edge and stage 1 HPTR leading CFMI PROPRIETARY INFORMATION Page 27
CFMI PROPRIETARY INFORMATION Page 28
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Left Hand Ignition Lead Stage 5 customer bleed air HPC Stage 5 Start Bleed Valve Supplies fuel to the combustion chamber Igniter Lower Left Hand Side Combustion Case Fuel Nozzle (20) Transmits high voltage from the upper exciter to the 8:00 igniter Supplies start air pressure to the HPC stage 5 start bleed valve CDP (PS3) Tap and Signal Line Ignites the fuel/air mixture and BSI Port S11 HPC Stage Bleed Port (3) Aerodynamically unloads the HPC during start Combustion Case Transmits the compressor discharge pressure signal to the MEC Air Signal Start Bleed Tube Contains the combustion chamber CFMI PROPRIETARY INFORMATION Page 29
CFMI PROPRIETARY INFORMATION Page 30
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Master VBV Ball Screw Actuator (1) Fan Duct Panel Variable Bleed Valve (12) VBV Stop Mechanism Kicker Stop Changes the VBV fuel gear motion into VBV linear rotational motion Supplies by-pass of primary airflow into the secondary airflow Points airflow from the booster through the open VBV doors to the fan by-pass air Controls the range of movement of the VBV fuel gear motor Transmits VBV master ball screw position to feedback cable Feedback Rod Clevis Supplies a stop for the free lever CFMI PROPRIETARY INFORMATION Page 31
CFMI PROPRIETARY INFORMATION Page 32
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Return Lever VBV Feedback Cable Rod End Bearing Free Lever VSV Rod End Pressure Line VSV Head End Pressure Line Uses fuel pressure to turn the motor drive, which opens or closes the VBVs Supplies a biased feedback signal to the MEC to further open VBV doors Transmits rod end fuel pressure from the MEC to the VSV actuator Transmits head end fuel pressure from the MEC to the VSV actuator Adjusts the length of the VBV feedback cable during the travel check VBV Gear Motor Returns the VBV to the normal MEC schedule CFMI PROPRIETARY INFORMATION Page 33
CFMI PROPRIETARY INFORMATION Page 34
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT TC2 Signal Line Idle Solenoid TC3 Signal Line (-3B2/-3C only) Cavity Drain VSV Rod End Pressure Line VSV Head End Pressure Line TC1 Signal Line Carries Pb or Pc fuel pressure from the MEC to the HPTCCV 9 th stage valve Carries Pb or Pc fuel pressure from the MEC to the HPTCCV 5 th stage valve Drains oil from the forward sump seal cavity to overboard Carries fuel pressure from the MEC to the VSV actuators to open the VSVs Electrically supplies flight and ground idle (high and low idle) by the aircraft s flight condition Carries fuel pressure from the MEC to the VSV actuators to close the VSVs Signal pressure to the timer solenoid during a takeoff with n2 larger than 95% CFMI PROPRIETARY INFORMATION Page 35
CFMI PROPRIETARY INFORMATION Page 36
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Electric Connector VSV Feedback Cable Pb Pressure Line VBV Feedback Cable Adjustment Screw VSV Feedback Cable Transmits PLA from the MEC to the PMC and transmits the TMC from the PMC to the MEC To rig the position of the pointer with the VSV rig notch To rig the position of the pointer with the VBV rig notch Carries Pb (low) pressure from the CIT (T25) sensor to the MEC Carries P6 (high) pressure from the MEC to the CIT (T25) sensor P6 Pressure Line Indicates VBV door position to the MEC Adjustment Screw VBV Feedback Cable Indicates VSV position to the MEC CFMI PROPRIETARY INFORMATION Page 37
CFMI PROPRIETARY INFORMATION Page 38
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Oil Scavenge Return Line Oil Scavenge Line Transmits flight deck throttle demand to the MEC Supplies static rigging procedure of the VSV actuator to the system VSV Actuator Rig Pin Hole (Left Side) Supplies positive fuel ON/OFF selection VSV Actuator (Left Side) VBV Open Port Line Power Lever Supplies fuel from the servo fuel heater to the MEC Fuel pressure from the MEC to the rod end or the head end actuates the VSV system Supplies scavenge oil return from the servo heater to the oil tank Fuel Shutoff Lever Holds all servo mechanism lines Full Reverse Power Lever Stop Fuel Supply Line 9 O clock Tube Bundle VBV Close Port Line Full Forward Power Lever Stop Supplies stoppage for the power lever at its 130-degree stop (non-adjustable) Supplies mechanical stoppage for the power lever (non-adjustable) Supplies oil from the scavenge filter to the servo fuel heat exchanger Supplies fuel from the MEC to the VBV motor to open the VBVs Supplies fuel from the MEC to the VBV motor to close the VBVs CFMI PROPRIETARY INFORMATION Page 39
CFMI PROPRIETARY INFORMATION Page 40
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT LP Fuel Pump Screen Assembly Servo Fuel Heater De-ices the servo fuel by convection transfer of heat from the scavenge oil Transmits power from the IGB to the AGB for the accessories Transfer Gearbox Supplies gear drive for the accessories Main Fuel/Oil Heat Exchanger Fuel Supply Heater Tube Pb Pressure Line (-3B2/-3C only) Fuel Pump Fuel Supply Line Horizontal Drive Shaft Housing Accessory Gearbox Main Engine Control (MEC) Gives access to the LP stage impeller for verification of rotation Supplies vent air from AGB to the forward sump, & protects horizontal drive shaft Transmits fuel from the pump to the servo heater Two-stage pump that supplies fuel pressure and drive for the MEC Pb supply to the timer and timer solenoid valve from the fuel pump Transmits fuel from the MEC to the fuel flow meter Cools the engine oil through convection transfer of heat from the oil to the fuel Supplies schedule fuel for combustion and servo operation CFMI PROPRIETARY INFORMATION Page 41
CFMI PROPRIETARY INFORMATION Page 42
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Forward Sump MCD Lube Supply Filter PS12 Signal Line Oil Scavenge Line Lubrication Unit AGB/TGB Sump MCD Aft Sump MCD Fuel Filter Collects and filters metallic and non-metallic particles from the AGB/TGB sumps Supplies one supply pump and three scavenge pumps for oil circulation Supplies scavenge oil from the lube unit to the scavenge filter element Collects and filters metallic and non-metallic particles from the aft sump Supplies static air pressure from the PS12 manifold to the MEC Filters the fuel before the fuel flows to the high pressure stage of the fuel pump Filters the supply oil before the oil flows to the sumps Collects and filters metallic and non-metallic particles from the forward sump CFMI PROPRIETARY INFORMATION Page 43
CFMI PROPRIETARY INFORMATION Page 44
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT AGB Drain Port Supplies oil from the lube unit to the AGB Lube Scavenge Filter Filters the scavenge oil before the oil flows to the servo heater AGB Alignment Turnbuckle Supplies drainage of the AGB sump MCD Retention Bar Oil Supply Line Visual Clogging Indicator Oil Scavenge Line Supplies a positive lock of the MCD, and prevents partial disengagement Connects the TGB to the AGB to supply oil scavenging Aligns the AGB for horizontal drive shaft installation Supplies a visual indication of the lube supply filter clogging CFMI PROPRIETARY INFORMATION Page 45
CFMI PROPRIETARY INFORMATION Page 46
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT TS5 Pressure Line (-3B2/-3C only) P7 Pressure Line HPTCCV Timer (-3B2/-3C only) HPTCCV Timer Lockout Solenoid (-3C only) Pb Pressure Line TC1 Pressure Line (-3B2/-3C only) TS9 Pressure Line (-3B2/-3C only) Changes the operation of the HPTCCV during takeoff Transmits Pb (low) pressure from the T2 sensor to the MEC Supplies output of Pc or Pb from the TCC timer to the TCC valve to control stage 5 bleed* Supplies output of Pc or Pb from the TCC timer to the TCC valve to control stage 9 bleed** Controls the operation of the stage 5 valve of the TCCV (timer disarmed) Weight-on-wheels sensing relay, airborne condition prevents TC3 fuel flow to TCCV timer Transmits P7 (high) pressure from the MEC to the T2 sensor *NOTE: Timer disarmed TS5 ports Tc1 fuel pressure. **NOTE: Timer disarmed TS9 ports Tc2 fuel pressure. CFMI PROPRIETARY INFORMATION Page 47
CFMI PROPRIETARY INFORMATION Page 48
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Bellows/Valve Housing (T2) Pb Pressure Line (-3b2/-3C only) HPTCCV Timer Adjustment Screw (-3B2/-3C only) Pc Pressure Line (-3B2/-3C only) TC2 Pressure Line (-3B2/-3C only) T2 Sensor (Stowed) Pc pressure holds the timer latching valve in the latched position * Controls the operation of the stage 9 valve of the TCCV (timer disarmed) Supplies low pressure for timer operation Changes the fuel pressure to the MEC with changes in inlet temperature The timer starts its sequence when pressure indicates to lock-out solenoid that N2 is 95% Supplies the adjustment for the timer operation speed TC3 Pressure Line (-3B2/-3C only) Supplies the fan inlet temperature to the MEC *NOTE: This lets the timer open one time each engine cycle CFMI PROPRIETARY INFORMATION Page 49
CFMI PROPRIETARY INFORMATION Page 50
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Hand Cranking Pad Drains to Overboard Hydraulic Pump Pad Drain Supports the hydraulic pump Hydraulic Pump Pad Drains to overboard Starter and Hand Cranking Pad Drain Drains to overboard CSD/IDG Cavity Reservoir Standpipe Drain Supports the air starter Pneumatic Starter Pad CSD/IDG Pad Lets the operator rotate the core during maintenance Transmits power to the PMC and flight deck N2 speed indication CSD/IDG Pad Drain Supports the CSD/IDG Control Alternator Makes sure oil level of the CSD/IDG is normal during servicing CFMI PROPRIETARY INFORMATION Page 51
CFMI PROPRIETARY INFORMATION Page 52
IDENTIFY THE LINE, ACCESSORY OR COMPONENT SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Core Major Module Fan Major Module Low Pressure Turbine (LPT) Major Module Contains the LPT rotor, LPT stator, LPT shaft, and the LPT frame Contains fan/booster, No. 1 and 2 bearing support, IGB, No. 3 bearing, fan frame, TGB and AGB Contains HPC rotor & stators, combustor case & liner, HPT nozzle & rotor, and LPT nozzle CFMI PROPRIETARY INFORMATION Page 53
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