COMPONENT IDENTIFICATION
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT
EEC shock mount Supplies electronic data that gives information
to the EEC for engine configuration.
EEC identification plug (P11) Holds the Electronic Engine Control (EEC) or (ECU)
Air sense line P25 Sends air pressure information to the EEC at
station 13 and is optional.
Air sense line PS13 Sends ambient air pressure information to the
EEC from station 0.
Air sense line PS3 Sends air pressure information to the EEC from
station 25 and is optional.
Air sense line PO Sends air pressure information to the EEC from
station 3.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Upper exciter box Supplies the exciter boxes with aircraft electrical
power.
Lower exciter box Supplies the RH igniter plug with electrical
power to start combustion.
RH ignition lead Supplies the LH igniter plug with electrical
power to start combustion.
LH ignition lead Supplies a path for the electrical energy to
reach the RH igniter plug to cause a spark.
115 Vac power supply connection Supplies a path for the electrical energy to reach the LH igniter plug to cause a spark.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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LH fan cowl Mechanical fastener to hold the fan cowls.
LH fan cowl latches Gives access to service the IDG.
IDG access door Supplies protection and aerodynamic airflow
over the engine LH fan module area.
EEC air inlet duct Discharge hot airflow from the engine inlet cowl.
Outlet for the inlet anti-ice system Air discharge for the starter.
Fan cowl airflow outlet Supplies cooling air to the EEC.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Integrated drive generator (IDG) Points air into the engine.
Low pressure turbine major module Supplies electricity for the aircraft.
Inlet cowl Supplies the energy to operate the engine.
Core major module Changes the energy to turn the fan and LPC.
Fan major module Supplies 80% of the thrust to operate the
engine.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
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QAD ring Supplies an electrical connection for the cockpit
oil pressure signal.
Oil level sight glass Gives access to service the IDG oil filter.
IDG Supplies cool oil from the IDG oil coolers to IDG
for lubrication.
Phase lead terminal Mechanical fastener to hold the IDG
Disconnect reset ring Supplies the electrical connections for the
aircraft electrical systems from the engines.
Electrical connector Lets servicing of the IDG be done from a
remote oil supply system.
Charge filter Disconnects and resets the IDG shaft after
maintenance.
Pressure fill adapter Supplies access to check oil quantity in the
IDG.
IDG oil inlet port Supplies the primary electrical energy for the
aircraft electrical systems from the engine.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
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IDG fuel/oil cooler
Electrical connection for the differential pressure switch for the engine scavenge oil filter.
IDG fuel/oil cooler IN line Decreases the temperature of the IDG hot oil with fuel from the LP side of the pump.
IDG fuel/oil cooler OUT line Sends cool oil back to the IDG.
Fan frame Sends hot oil to the IDG oil coolers to decrease
the temperature.
Differential pressure switch electrical connector Lets the AGB alignment be adjusted.
AGB turnbuckle The support structure for the forward engine
mount and the engine.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
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IDG air/oil cooler Decreases engine noise.
Aft acoustical panels Uses fan air in a heat exchanger to supply cool
air for the IDG oil
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Hydraulic pump Supplies hydraulic fluid to the hydraulic pump.
Hydraulic pump IN line Supplies hydraulic fluid pressure to the airplane
systems.
Hydraulic pump OUT line Supplies hydraulic pump operation electrical
information to the airplane.
Hydraulic pump electrical connection Sends hydraulic fluid from the hydraulic pump.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Starter Uses air pressure during engine start to supply
N2 rotation
Starter air supply duct Supplies core speed to the EEC and to the
airplane systems.
N2 speed sensor Supplies electrical power to the electronic
engine control box.
Hand cranking pad Supplies air pressure to the starter.
EEC alternator Supplies N2 rotation by the manual method.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Starter air valve manual drive Supplies normal supply air pressure to the
starter.
Starter air valve Lets the starter air valve be opened manually.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Hydraulic connector for the pressure line Supplies fuel to the engine fuel pump.
Fuel supply line to the engine Supplies hydraulic fluid to the hydraulic pump.
Electrical connector for the thrust reversers Supplies hydraulic fluid to the airplane.
Hydraulic connector for the supply line Supplies hydraulic fluid to the hydraulic filter.
Thrust reverser actuator Operates the thrust reverser to deploy and
stow.
Hydraulic connector for the hydraulic fluid filter. Supplies electrical feedback information about the thrust reversers position.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Thrust reverser hold open actuator Opens/closes the T/R doors for maintenance.
Thrust reverser opening actuator safety lock collar
Supplies electrical information path to the airplane for fuel flow indication, etc.
Fuel flow transmitter Secures and safeties the actuator.
Fuel flow transmitter electrical connector Gives downstream protection to fuel nozzles.
In-line fuel filter Gives fuel flow information to the airplane for
indication.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Oil temperature sensor electrical connection Supplies electrical path to the aircraft for engine
oil temperature indication.
Oil temperature sensor Supplies electrical path to the aircraft for engine oil pressure indication.
Oil pressure sensor electrical connection Supplies electrical information to the aircraft for engine oil temperature indication.
Oil pressure sensor Supplies electrical information to the aircraft for
engine pressure indication.
Fan case Supplies fan blade containment and holds some
LRUs.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Accessory Gearbox (AGB) Supplies fuel to the fuel pump.
Transfer Gearbox (TGB) Holds and turns the accessories for the engine.
Main fuel/oil heat exchanger Supplies the N2 drive for the AGB.
Engine fuel supply line (port) Decreases temperature of the engine oil.
Servo fuel heater
Increases the temperature of the engine fuel to prevent ice particles entering the engine servo systems.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Channel B Supplies fuel from the LP fuel pump to the IDG
oil cooler.
Channel A Attaches the fuel pump to AGB.
Airframe shutoff (HPSOV) feedback Supplies the fuel to the engine fuel systems.
Hydromechanical Unit (HMU) Supplies the hydraulic muscle to operate the servo systems.
Fuel pump Transmits an HPSOV position signal to the
EEC, then to the ENGINE CLOSED light.
Fuel line Electrical connection for EEC channel B.
QAD ring Electrical connection for EEC channel A.
Low pressure stage fuel pump inspection plug LP stage pump impeller inspection access
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Oil scavenge filter Filters fuel from the LP pump.
Oil scavenge filter lock release Locks the oil filter and prevents rotation.
Fuel filter Gives pressure information to signal oil filter
clogging.
Fuel filter drain plug
Supplies pressure information to signal fuel filter clogging.
Fuel filter differential pressure switch Filters oil from the engine oil return.
Oil filter differential pressure switch Lets the AGB alignment be adjusted.
AGB turnbuckle Lets the engine fuel filter be drained.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Lubrication unit Filters the oil.
Magnetic chip detector bayonet slot Gives access to inspect for sumps debris
Magnetic chip detector Gives a clogging indication by a red pin that
pops out if the supply oil filter clogs.
Supply oil filter pop-out indicator Supplies alignment for proper installation.
Pressure oil supply filter Supplies the oil for the engine AGB.
AGB oil supply line Gives the oil supply and return for the engine oil
system.
Scavenge oil filter unlocking lugs Lets the scavenge oil filter be removed with a tool
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
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Engine oil supply line Sends oil from the engine aft sump.
Rear sump scavenge oil line Sends oil from the engine forward sump.
Forward sump scavenge oil line Sends oil from the engine AGB and TGB.
AGB TGB scavenge oil line Supplies the oil to the engine sumps and
accessories.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Debris monitoring system chip detector
Supplies the CDU information on oil system contamination in the AGB, TGB, forward and aft sumps.
Debris monitoring system chip detector lead Supplies the electrical path to the junction box then to the airplane CDU.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Debris monitoring system junction box (optional) Oil tank scupper drain.
Debris monitoring system chip detector lead
Sends the CDU data on oil system
contamination in the AGB, TGB, forward and aft sumps.
Drain line The electrical path to the junction box then to
the airplane CDU.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Anti-leakage valve Supplies the lubrication unit with oil.
Oil supply line Lets removal of the lubrication unit occur
without draining the oil tank.
Oil pressure line Supplies pressurized oil to keep the
anti-leakage valve open.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT RH VBV actuator drain line
LH VBV actuator drain line RH VSV actuator drain line LH VSV actuator drain line Transient bleed valve drain line HPTACC valve drain line LPTACC valve drain line
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
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VBV open line Supplies the fuel pressure to operate the TBV.
VBV close line Supplies the fuel pressure to close the VBV
doors.
VSV rod line Holds the forward part of the engine.
VSV head line Supplies the fuel pressure to operate the
LPTACC valve.
Transient bleed valve line Supplies the fuel pressure to operate the HPTACC valve.
HPTACC valve line Supplies the fuel pressure to open the VSV’.
LPTACC valve line Supplies the fuel pressure to close the VSVs.
HMU Supplies the reference pressure to operate
some valve.
PCR line Supplies the fuel pressure to close the BSV.
Burner staging valve line Supplies the fuel pressure to open the VBV
doors.
HPSOV electrical connector
Supplies servo system fuel input to operate engine components and regulates fuel for nozzles.
Fan frame Supplies the electrical input to operate the
HPSOV.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Forward sump vent line Supplies the housing for the 9 o’clock tube
bundle.
Transfer Gearbox Supplies the air signal to operate the engine oil
pressure indicator.
Fan frame strut fairing Relays the N2 drive for the AGB.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Engine high pressure bleed air regulator Supplies the high pressure customer bleed air
control.
LH VBV actuator Supplies the mechanical drive power to operate
the VBVs.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Fan duct panel Supplies the attachment support for the thrust
reverser system and core cowl air sealing.
Outlet guide vanes Supplies the cover over the VBV and the air
outlet when they are open.
Internal V-groove panel Changes the direction of the air out of the fan.
Fan frame strut Holds and gives rigidity to the fan frame.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Variable bleed valve door Supplies the booster air control into the core to
prevent a stall.
Variable bleed valve actuator connecting rod Fuel pressure to open the VBVs.
Variable bleed valve actuator drain line Fuel pressure to close the VBVs.
VBV actuator LVDT position feedback connector
Changes the hydraulic actuator movement into a mechanical movement, to open and close the VBVs.
VBV actuator rod line (close)
Changes the hydraulic actuator movement into an electrical position feedback signal to the EEC.
VBV actuator head line (open) Drains the fuel in case of actuator seal leakage.
LH VBV actuator One of the muscles to open the VBV doors.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Variable stator vane bellcrank
Changes the hydraulic actuator movement into a mechanical movement, to open and close the VSVs.
Variable stator vane actuator Changes the hydraulic fluid to a mechanical force to move the bellcrank assembly.
High pressure compressor forward stator case. Shows the dimension of the core for modular maintenance.
Metal core measurement placard Supports the HPC stators.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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Variable stator vane stage 1 Prevent HPCR core stalls and improves
efficiency of the engine.
Variable stator vane stage 2 Prevent HPCR core stalls and improves
efficiency of the engine.
Variable stator vane stage 3 Prevent HPCR core stalls and improves
efficiency of the engine.
Inlet guide vanes Prevent HPCR core stalls and improves
efficiency of the engine.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Variable bleed valve door Supplies air to keep the LPT turbine stator case
cool.
Fan duct panel (removed) Supplies the booster air control into the core to prevent a stall.
LPT air inlet scoop Supplies the cover over the VBV and an air
outlet when VBVs are open.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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ITEM NO.
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HPT shroud support Supplies stages 4 and 9 cooling air to the HP
turbine shroud support.
HPT air duct Supplies structural strength to the HPT shroud.
HPTACC valve Controls the clearance inside the engine
between the HPT rotor and HPT shroud.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM NO.
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LINE, ACCESSORY OR COMPONENT
ITEM NO.
SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT HPTACC valve 9th stage bleed air duct Supplies low pressure bleed air for HPT rotor
and HPT shroud clearance control.
HPTACC valve 4th stage bleed air duct Supplies high pressure bleed air for HPT rotor and HPT shroud clearance control.
HPTACC electrical connection Supplies the hydraulic pressure to move the HPTACC valve.
HPTACC valve fuel manifold Supplies the valve position feedback to the EEC.
FFCCV electrical connection Supplies vibration monitoring data to the AVM.
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
CFM56-7B TRAINING MANUAL
COMPONENT IDENTIFICATION
FUEL, CONFIGURATION 1 (BSV)