CFM56-3
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
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 2
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
ITEM
NO.
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
ALL
CFMI PROPRIETARY INFORMATION
TRAINING MANUAL
GENERAL
Page 3
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 4
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
Fan Frame
Left Hand Ignition Lead
Air Manifold
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 5
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 6
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
ITEM
NO.
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
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 7
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 8
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
Visual Oil Quantity Window
Oil Tank Anti-Siphon Line
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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)
To balance internal sump pressures
Gravity Fill Oil Cap
Supplies visual inspection of oil tank service
limits
Seals oil tank and allows for servicing and oil
sampling
Oil Tank Vent Line
Oil Tank Quantity Transmitter
ALL
CFMI PROPRIETARY INFORMATION
Transmit oil tank quantity to flight deck
GENERAL
Page 9
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 10
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
Oil Tank Pressure Fill and Overflow Ports
Oil Scavenge Return Line
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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
Supplies scavenge oil return from servo heater
to oil tank
Supplies remote pressure servicing of the oil
tank
N1 Speed Sensor
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 11
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 12
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
ITEM
NO.
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
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 13
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 14
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
Alternate Vibration Sensor Pad
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
Supplies static rigging of variable stator vane
actuator to the system
High Pressure Turbine Clearance Control Valve
(HPTCCV)
Ignite fuel/air mixture and BSI port S10
VSV Actuator Rig Pin Hole (Right Side)
Connects No. 1 bearing vibration sensor with
aircraft
Electrical Connector, Bearing Vibration Sensor
To connect each VSV actuation ring
Igniter - Lower Right Hand Side Combustor
Case
Alternate No. 1 bearing vibration sensor
mounting pad
Supplies cooling air from the booster to the air
manifold
VSV Actuation Connecting Links
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 15
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 16
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
Borescope Port S7
Borescope Port S9
Borescope Port S6
Borescope Port S3
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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
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
Borescope Port S2
Borescope Port S4
Borescope Port S8
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 17
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 18
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
ITEM
NO.
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
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 19
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 20
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
ITEM
NO.
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
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 21
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 22
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
Turbine Frame
Distribution Box LPT Case Cooling
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 23
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 24
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
ITEM
NO.
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
BSI HPTR trailing edge and stage 1 LPTR
leading edge
BSI stage 4 leading edge and stage 3 trailing
edge LPTR
Borescope Port S21
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 25
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 26
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
ITEM
NO.
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
Supplies stage 5 bleed air for stage 1 LPT
nozzle cooling
BSI HPTR trailing edge and stage 1 HPTR
leading
Borescope Port S18
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 27
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 28
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
ITEM
NO.
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
Transmits high voltage from the upper exciter to
the 8:00 igniter
Supplies start air pressure to the HPC stage 5
start bleed valve
Fuel Nozzle (20)
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
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 29
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 30
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
Master VBV Ball Screw Actuator (1)
Fan Duct Panel
Variable Bleed Valve (12)
VBV Stop Mechanism
Kicker Stop
Feedback Rod Clevis
ALL
CFMI PROPRIETARY INFORMATION
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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
Supplies a stop for the free lever
GENERAL
Page 31
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 32
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY 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
VBV Gear Motor
ALL
CFMI PROPRIETARY INFORMATION
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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
Returns the VBV to the normal MEC schedule
GENERAL
Page 33
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 34
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY 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
ALL
CFMI PROPRIETARY INFORMATION
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
Carries Pb or Pc fuel pressure from the MEC to
the HPTCCV 9th stage valve
Carries Pb or Pc fuel pressure from the MEC to
the HPTCCV 5th 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%
GENERAL
Page 35
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 36
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
Electric Connector
VSV Feedback Cable
Pb Pressure Line
VBV Feedback Cable
Adjustment Screw VSV Feedback Cable
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 37
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 38
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
Oil Scavenge Return Line
Oil Scavenge Line
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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)
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
VBV Open Port Line
Power Lever
Fuel Shutoff Lever
Holds all servo mechanism lines
Full Reverse 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
Fuel Supply Line
9 O’clock Tube Bundle
VBV Close Port Line
Full Forward Power Lever Stop
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 39
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 40
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
LP Fuel Pump Screen Assembly
Servo Fuel Heater
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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
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
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)
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 41
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 42
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY 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
ALL
CFMI PROPRIETARY INFORMATION
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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
GENERAL
Page 43
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 44
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
ITEM
NO.
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
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
Oil Supply Line
Visual Clogging Indicator
Oil Scavenge Line
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 45
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 46
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY 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)
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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.
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 47
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 48
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
Bellows/Valve Housing (T2)
Pb Pressure Line (-3b2/-3C only)
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
Pc pressure holds the timer latching valve in the
latched position *
Controls the operation of the stage 9 valve of
the TCCV (timer disarmed)
HPTCCV Timer Adjustment Screw (-3B2/-3C
only)
Supplies low pressure for timer operation
Pc Pressure Line (-3B2/-3C only)
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
TC2 Pressure Line (-3B2/-3C only)
T2 Sensor (Stowed)
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
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 49
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 50
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
ITEM
NO.
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
Lets the operator rotate the core during
maintenance
Transmits power to the PMC and flight deck N2
speed indication
CSD/IDG Pad
CSD/IDG Pad Drain
Supports the CSD/IDG
Control Alternator
Makes sure oil level of the CSD/IDG is normal
during servicing
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 51
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 52
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
ITEM
NO.
IDENTIFY THE
LINE, ACCESSORY OR COMPONENT
Core Major Module
Fan Major Module
Low Pressure Turbine (LPT) Major Module
ALL
CFMI PROPRIETARY INFORMATION
ITEM
NO.
SELECT THE PURPOSE THAT MATCHES
THE LINE ACCESSORY OR COMPONENT
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
GENERAL
Page 53
Dec 00
CFM56-3
TRAINING MANUAL
COMPONENT IDENTIFICATION
THIS PAGE LEFT INTENTIONALLY BLANK
ALL
CFMI PROPRIETARY INFORMATION
GENERAL
Page 54
Dec 00