Aircrft Engine

CFM56-7B

TRAINING MANUAL

COMPONENT IDENTIFICATION 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

ALL CFMI PROPRIETARY INFORMATION

GENERAL Page 1 Mar 01

CFM56-7B

TRAINING MANUAL

COMPONENT IDENTIFICATION



CFM56-7B

TRAINING MANUAL

COMPONENT IDENTIFICATION ITEM NO.

IDENTIFY THE LINE, ACCESSORY OR COMPONENT Fan blade platform Spinner rear cone Spinner front cone jack screw hole Balance screw Spherical indent for fan blade #1


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies alignment of the spinner cones and fan blades to the #1 position for engine balancing. Supplies a threaded hole to remove the spinner front cone. Supplies containment of the fan blades spacers and the retaining ring. Supplies an aerodynamic surface between the fan blades. Balances engine if vibration limits are incorrect.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT

ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT

Fan blade platform retention pins

Lets extra weight to be added to the fan module for balancing at shop level only.

Fan blade dovetail slot

Holds the fan blades and spacers.

Fan disk

Holds and gives alignment of the platforms between the fan blades.

Balance weight for the fan disk

Holds the fan blades.



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


Splitter fairing

Divides the secondary and primary airflow.

Stage 1 booster vanes

Points the fan discharge airflow.

Outlet guides vanes (OGV’S)

The primary airflow entry.



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


Fan cowl hold open rod

Supports the fan cowl for maintenance.

Spinner rear cone

Supplies most of the thrust produced by the engine. Supplies a smooth, inner, aerodynamic flow path for air entering the engine.

Fan blades Spinner front cone

Prevents ice formation.

Fan abatable material

Supplies axial retention of the fan blade spacers and location for balance weights. Keeps minimum clearance between the fan blades and fan case.

Engine inlet cowl T12 sensor


Monitors fan inlet temperature.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


Thrust reverser

Holds the thrust reverser open for maintenance.

Thrust reverser blocker door

Mechanically locks the thrust reverser actuator in the Open position. Connection for the hand pump on the thrust reverser opening actuator to open the thrust reverser. A backup lock for the thrust reverser opening actuator in the Open position. Changes the direction of secondary airflow to decrease aircraft speed after landing.

Thrust reverser opening actuator Thrust reverser opening actuator inlet fitting Thrust reverser opening actuator safety lock Thrust reverser opening actuator lock collar

Changes the direction of secondary airflow.

Thrust reverser translating actuator

Controls deploy/stow of thrust reverser.



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


RH fan cowl

Supplies access for maintenance of the RH side of the fan module.

T12 access panel

Supplies an access for servicing the oil tank.

Oil tank filler door

Supplies an access to the T12 sensor.



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


N1 sensor

Sends vibration data to the flight compartment.

Oil quantity transmitter

Sends oil quantity data to the flight compartment. Gives remote pressure servicing (optional) of the oil tank. Releases pressure from the oil tank with the forward sump.

Vibration sensor connector Oil tank Balance pressure line

Sends the oil back to the oil tank

Oil scavenge return line

Sends N1 speed information to the EEC and flight compartment. Supplies the forward support structure for the engine core, fan module and forward engine mount. Steel plate that indicates serial number, thrust ratings, etc. Gives support for some LRUs and contains fan blade.

Fan case Oil fill port and oil scupper Engine data plate Fan frame

Supplies a place for oil storage for the engine.

Remote oil filling ports

Supplies the opening to fill the oil tank and a drain area if the oil is spilt. Supplies the external means of checking the oil quantity inside the oil tank.

Oil sight glass



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


Flexible cooling duct for the EEC

Supplies hot air flow in the engine inlet cowl.

Inlet cowl thermal anti-ice valve

Sends cooling airflow to the Electronic Engine Control (EEC) Unit.



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


EEC

Supplies an interface for engine and aircraft systems.

EEC wiring connections harness

Supplies the “brain” for engine control.



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT EEC shock mount EEC identification plug (P11) Air sense line P25 Air sense line PS13 Air sense line PS3 Air sense line PO


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies electronic data that gives information to the EEC for engine configuration. Holds the Electronic Engine Control (EEC) or (ECU) Sends air pressure information to the EEC at station 13 and is optional. Sends ambient air pressure information to the EEC from station 0. Sends air pressure information to the EEC from station 25 and is optional. Sends air pressure information to the EEC from station 3.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Upper exciter box Lower exciter box RH ignition lead LH ignition lead 115 Vac power supply connection


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies the exciter boxes with aircraft electrical power. Supplies the RH igniter plug with electrical power to start combustion. Supplies the LH igniter plug with electrical power to start combustion. Supplies a path for the electrical energy to reach the RH igniter plug to cause a spark. Supplies a path for the electrical energy to reach the LH igniter plug to cause a spark.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


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




CFM56-7B

TRAINING MANUAL



ITEM NO.


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




CFM56-7B

TRAINING MANUAL



ITEM NO.


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. Lets servicing of the IDG be done from a remote oil supply system. Disconnects and resets the IDG shaft after maintenance. Supplies access to check oil quantity in the IDG. Supplies the primary electrical energy for the aircraft electrical systems from the engine.

Electrical connector Charge filter Pressure fill adapter IDG oil inlet port



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


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




CFM56-7B

TRAINING MANUAL



ITEM NO.


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




CFM56-7B

TRAINING MANUAL



ITEM NO.


Hydraulic pump

Supplies hydraulic fluid to the hydraulic pump.

Hydraulic pump IN line

Supplies hydraulic fluid pressure to the airplane systems. Supplies hydraulic pump operation electrical information to the airplane.

Hydraulic pump OUT line Hydraulic pump electrical connection


Sends hydraulic fluid from the hydraulic pump.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Starter Starter air supply duct N2 speed sensor

ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Uses air pressure during engine start to supply N2 rotation Supplies core speed to the EEC and to the airplane systems. 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




CFM56-7B

TRAINING MANUAL



ITEM NO.


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




CFM56-7B

TRAINING MANUAL



ITEM NO.


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. Supplies electrical feedback information about the thrust reversers position.

Hydraulic connector for the hydraulic fluid filter.



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


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




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Oil temperature sensor electrical connection Oil temperature sensor Oil pressure sensor electrical connection Oil pressure sensor Fan case


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies electrical path to the aircraft for engine oil temperature indication. Supplies electrical path to the aircraft for engine oil pressure indication. Supplies electrical information to the aircraft for engine oil temperature indication. Supplies electrical information to the aircraft for engine pressure indication. Supplies fan blade containment and holds some LRUs.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


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




CFM56-7B

TRAINING MANUAL



ITEM NO.


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. Transmits an HPSOV position signal to the EEC, then to the ENGINE CLOSED light.

Fuel pump 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




CFM56-7B

TRAINING MANUAL



ITEM NO.


Oil scavenge filter

Filters fuel from the LP pump.

Oil scavenge filter lock release

Locks the oil filter and prevents rotation.

Fuel filter Fuel filter drain plug

Gives pressure information to signal oil filter clogging. 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




CFM56-7B

TRAINING MANUAL



ITEM NO.


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. Lets the scavenge oil filter be removed with a tool

Scavenge oil filter unlocking lugs



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


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




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Debris monitoring system chip detector Debris monitoring system chip detector lead


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies the CDU information on oil system contamination in the AGB, TGB, forward and aft sumps. Supplies the electrical path to the junction box then to the airplane CDU.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Debris monitoring system junction box (optional) Debris monitoring system chip detector lead Drain line


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Oil tank scupper drain. Sends the CDU data on oil system contamination in the AGB, TGB, forward and aft sumps. The electrical path to the junction box then to the airplane CDU.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


Anti-leakage valve

Supplies the lubrication unit with oil.

Oil supply line

Lets removal of the lubrication unit occur without draining the oil tank. Supplies pressurized oil to keep the antileakage valve open.

Oil pressure line



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


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




CFM56-7B

TRAINING MANUAL



ITEM NO.


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. Supplies the fuel pressure to operate the HPTACC valve.

Transient bleed valve line 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. Supplies servo system fuel input to operate engine components and regulates fuel for nozzles. Supplies the electrical input to operate the HPSOV.

HPSOV electrical connector Fan frame



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Forward sump vent line Transfer Gearbox Fan frame strut fairing


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies the housing for the 9 o’clock tube bundle. Supplies the air signal to operate the engine oil pressure indicator. Relays the N2 drive for the AGB.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Engine high pressure bleed air regulator LH VBV actuator


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies the high pressure customer bleed air control. Supplies the mechanical drive power to operate the VBVs.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Fan duct panel Outlet guide vanes

ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies the attachment support for the thrust reverser system and core cowl air sealing. 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




CFM56-7B

TRAINING MANUAL



ITEM NO.


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

VBV actuator rod line (close)

Changes the hydraulic actuator movement into a mechanical movement, to open and close the VBVs. 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




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Variable stator vane bellcrank Variable stator vane actuator High pressure compressor forward stator case. Metal core measurement placard


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Changes the hydraulic actuator movement into a mechanical movement, to open and close the VSVs. Changes the hydraulic fluid to a mechanical force to move the bellcrank assembly. Shows the dimension of the core for modular maintenance. Supports the HPC stators.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Variable stator vane stage 1 Variable stator vane stage 2 Variable stator vane stage 3 Inlet guide vanes


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Prevent HPCR core stalls and improves efficiency of the engine. Prevent HPCR core stalls and improves efficiency of the engine. Prevent HPCR core stalls and improves efficiency of the engine. Prevent HPCR core stalls and improves efficiency of the engine.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Variable bleed valve door Fan duct panel (removed) LPT air inlet scoop


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies air to keep the LPT turbine stator case cool. Supplies the booster air control into the core to prevent a stall. Supplies the cover over the VBV and an air outlet when VBVs are open.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


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




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT HPTACC valve 9 th stage bleed air duct HPTACC valve 4 th stage bleed air duct HPTACC electrical connection HPTACC valve fuel manifold FFCCV electrical connection


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies low pressure bleed air for HPT rotor and HPT shroud clearance control. Supplies high pressure bleed air for HPT rotor and HPT shroud clearance control. Supplies the hydraulic pressure to move the HPTACC valve. Supplies the valve position feedback to the EEC. Supplies vibration monitoring data to the AVM.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL

COMPONENT IDENTIFICATION FUEL, CONFIGURATION 1 (BSV) ITEM NO.

IDENTIFY THE LINE, ACCESSORY OR COMPONENT Fuel spray shield (SAC) fuel manifold

ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies the fuel flow in the combustion chamber. Supplies protection from fuel going all over the engine if a leak occurs.

(SAC) fuel manifold

Fuel manifold

(SAC) Fuel nozzle

Deactivated staging valve.

(SAC) Burner staging valve (deactivated)

Fuel manifold



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL

COMPONENT IDENTIFICATION FUEL, CONFIGURATION 2 (NO BSV) ITEM NO.


ITEM NO.


(SAC) fuel nozzle

Sensor line for stage 9 air called compressor discharge pressure (CDP)

PS3 line (also called CDP)

Sends fuel in a spray into the combustor.

(SAC) fuel supply manifolds

Prevents leakage if the B nut comes loose.

Fuel nozzle drain shroud

Supplies fuel into the staged and unstaged manifolds.



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT LH ignition lead RH ignition lead Combustor borescope plug


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies the electrical path for the spark in the combustion chamber. Supplies access to the combustion chamber to be inspected. Supplies the electrical path for the spark in the combustion chamber.


CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL

COMPONENT IDENTIFICATION DAC CONFIGURATION ITEM NO.

IDENTIFY THE LINE, ACCESSORY OR COMPONENT S 9 borescope plug S8 borescope plug

ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Controls the fuel flow between the staged and unstaged DAC fuel nozzles. Supplies the electrical path to the EEC for position of the BMV.

S7 borescope plug

Supplies access to the HPC for inspection.

S6 borescope plug


S5 borescope plug


(DAC) burner modulating valve


(DAC) burner modulating valve electrical connection




CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


LPT air duct

Controls the fan air to the LPT case.

LPTACC valve

Ducts cooling air to the HPT shroud support.

LPT nozzle cooling manifold

1 of 4 tubes that cool the LPT nozzles with stage 4 air.

HPT air duct

Supplies the fan air path to the LPT case.



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


High stage bleed air valve

Supplies cooling air to the ignition leads.

LH ignition lead

Supplies stage 9 bleed air to the airplane systems. Supplies the path for electricity to the LH igniter plug. Supplies the path for electricity to the RH igniter plug. Transmits HPC inlet temperature data for the control logic.

RH ignition lead Ignition lead cooling manifold T25 sensor lead



CFM56-7B

TRAINING MANUAL




CFM56-7B

TRAINING MANUAL



ITEM NO.


Transient bleed valve actuator

Cools the ignition leads.

Ignition lead cooling manifold

Controls stage 9 air bleed to ease engine acceleration. Supplies the electrical path to the EEC for position of the TBV.

TBV electrical connection Transient bleed valve


Operates the TBV butterfly.


CFM56-7B

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CFM56-7B

TRAINING MANUAL



ITEM NO.


High stage bleed air valve

Controls stage 9 bleed air to the airplane.

Stage 5 bleed air check valve

Fuel nozzle with a gold band (DAC).

(DAC) cooling fuel nozzle

Fuel nozzle with a blue band (DAC).

(DAC) bleed fuel nozzle

Prevents stage 9 bleed air reverse flow into the HPC.

(DAC) fuel manifolds

Supplies access to the HPT rotor trailing edge.

Borescope plug

Holds the HPT shroud.

HPT shroud support

Supplies fuel into three manifolds the pilot, main 1, and main 2 (DAC).



CFM56-7B

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CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Fire loop detection sensor HPTCC sensor


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Supplies data to the EEC on the HPT shroud support temperature. Senses engine fires and sends the data to the flight compartment.


CFM56-7B

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CFM56-7B

TRAINING MANUAL



ITEM NO.


Combustion case

Supplies data to the EEC on the CDP temperature.

T3 sensor

Supports the combustion chamber.

Fuel manifold

Supplies fuel flow in the combustion chamber.

Fuel nozzle

Sends fuel in a spray into the combustor.



CFM56-7B

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CFM56-7B

TRAINING MANUAL



ITEM NO.


Turbine rear frame

Sends information to the EEC on LPT exhaust temperature.

T5 sensor (optional)

Supplies location for tooling attachment.

Turbine rear frame support

Supports the LPT case and attaches to the rear engine mount.



CFM56-7B

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CFM56-7B

TRAINING MANUAL



ITEM NO.


Oil supply line

Supplies oil to the rear sump.

Oil scavenge line

Scavenges the oil from the rear sump.

LPT case drain

Drains the LPT case.



CFM56-7B

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CFM56-7B

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ITEM NO.


LPT cooling tubes manifold

Sends fire data to the flight compartment.

EGT harness and probes

Monitors the T49.5 station and sends the data to the EEC and flight compartment. Supplies cooling air to the LPT manifold impingement holes to control clearance between the LPTR blades and case shrouds.

Fire loop detection sensors



CFM56-7B

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CFM56-7B

TRAINING MANUAL



ITEM NO.


Precooler air valve

Puts out engine fires.

Thrust bar

Controls the quantity of fan air directed to be precooler. Transmits the torque between the engine and aircraft.

Fire bottle discharge distribution tubes



CFM56-7B

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CFM56-7B

TRAINING MANUAL


IDENTIFY THE LINE, ACCESSORY OR COMPONENT Precooler Precooler downstream pressure sense line Precooler 450 degree F temperature sense line


ITEM NO.

SELECT THE PURPOSE THAT MATCHES THE LINE ACCESSORY OR COMPONENT Transmits the precooler pressure to the A/C systems. Transmits the precooler temperature to the A/C systems. Decreases the temperature of the bleed air for the airplane systems.


CFM56-7B

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CFM56-7B

TRAINING MANUAL



ITEM NO.


Primary exhaust nozzle

Contains the engine fires.

Rear engine mount

Directs the primary airflow.

Labyrinth seals

Supports the engine.



CFM56-7B

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CFM56-7B

TRAINING MANUAL



ITEM NO.


Primary exhaust nozzle

Primary airflow inner duct and sumps venting.

Exhaust plug

Makes sure the primary airflow is smooth.

Thrust reverser

Transmits thrust from engine to aircraft.

Thrust link

Decreases A/C speed after landing.



CFM56-7B

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CFM56-7B

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ITEM NO.


Primary exhaust

Keeps fire out of the engine center vent tube.

Flame arrestor

Removes primary air exhaust.

Thrust reverser

Points the secondary airflow forward and outboard to decrease the speed of the airplane with up to 80% of fan air.



CFM56-7B

TRAINING MANUAL

COMPONENT IDENTIFICATION THIS PAGE INTENTIONALLY LEFT BLANK



Aircrft Engine

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