cfm56-7ri2003
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Page 1EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
ENGINE REMOVAL AND INSTALLATION TRAINING COURSE
Document: GEK 112143
Revised: Jan. 2003
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CFM56-7B TRAINING MANUAL
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CFM56-7B TRAINING MANUAL
CFM Proprietary InformationThe information contained in this document is CFM Proprietary Information and is disclosed in confidence. It is the property of CFM and shall not be used,disclosed to others, or reproduced without the express written consent of CFM International. If consent is given for reproduction in whole or in part, this notice and the notice setforth on each page of this document shall appear in any such reproduction in whole or in part. The information contained in this document may also be controlled bythe U.S. export control laws. Unauthorized export or re-export is prohibited.
The Power Of Flight
CFM56-7B Removal & Installation Training Course
Document: GEK 112143Revised: Jan. 2003
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Table of Contents
Engine Nacelle………………………………………………………………………………….. Page 08
Engine Transportation Stand ……………………………………………………………….. Page 10
Fan Cowling …………………………………………………………………………………… Page 16
Engine Quick Disconnects ………………………………………………………………….. Page 18
Engine Support Tooling ……………………………………………………………………… Page 28
Engine Mounts ………………………………………………………………………………... Page 46
Thrust Reverser Hold Open Tooling ………………………………………………………. Page 52
Bootstrap Tooling …………………………………………………………………………….. Page 62
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CFM56-7B TRAINING MANUAL
ENGINE NACELLE
General DescriptionThe CFM56-7 engine fan cowling and thrust reverser segments are hinged to the strut. To remove orinstall an engine, the fan cowls need to be removed to provide access to the forward engine groundhandling points. The fan cowls are held in the open position by integral hold-open rods for enginemaintenance when the engine is installed on the strut. The forward fairing will need to be removed togain access to GSE bootstrap interface points. The forward fairing is held in place by 7 quick releaselatches allowing easy access to GSE hard points for the bootstrap system. The thrust reverser is madein two halves ("C"-Ducts) which are raised open with integral actuators by a hydraulic pump which mustbe purchased as Ground Support Equipment (GSE). Once the "C"-Ducts are open, an automatic lockin the actuators holds each "C"-Duct open. GSE actuator locks provide a backup for the locks in theactuators. When removing an engine, the actuators are disconnected and GSE thrust reverser cowlhold-open rods are the only means of holding the "C"-Ducts open.
With the thrust reverser halves held open, engine removal and installation is accomplished using a"bootstrap" hoisting system.
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CFM56-7B TRAINING MANUAL
ENGINE NACELLE
ALF
Thrust Reverser LH(C-Duct)
Thrust Reverser RH(C-Duct)
Engine Strut
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CFM56-7B TRAINING MANUAL
ENGINE TRANSPORTATION STAND
Purpose (2.B.b)The purpose of the engine stand, cradle or dolly is to support the engine during transportation to airport apron and shop. It may also be used for air or highway transportation with approval of CFMI. When using the stand for transportation, the two fan attach points and the aft right hand turbine attach point are required for support of the engine.
Equipment AM2563 Base Universal Transportation Cradlefor the CFM56-7 Engine
Additional Support EquipmentNote: Refer to GSE manual for more informationC78020 Equipment - Hold Open, Thrust Reverser Cowl, C71020 Kit - Bootstrap, CFM56-7 EngineC78005 Pump - Portable Hand, Thrust Reverser Cowl C71022 Torque Wrench Equipment - CFM56-7 Engine BoltsC71040 Inlet cowl sling
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ENGINE TRANSPORTATION STAND
Engine Stand
LH Fan Support
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ENGINE TRANSPORTATION STAND
Training Information Points (3.E.c)A series of Tie-down rings offer secure retainment during long distant hauling of the unit. When rolling engine under the wing, the top of the aft engine mount should not exceed 70.5 inches (179.09 cm) from the ground for ground clearance from the pre-cooler.
The transport base unit consists of a frame supported by four dual wheel caster assemblies. Each caster assembly has a 5 inches (13 mm) wide by 10 inches (25 mm) diameter wheel for easy mobility and a weight capacity of 5000 lbs (2266 kg) each. Shock absorbing polyurethane tread wheels, position locks and face brakes are standard. All four caster assemblies are designed to pin in a retracted position for air/truck transport of the entire unit, with engine. The towbar stows on the base frame when not in use. The maximum towing speed of the unit is 3 MPH (5Km/h). Built-in shock absorbing mounts cushion all transport movements.
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CFM56-7B TRAINING MANUAL
ENGINE TRANSPORTATION STAND
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CFM56-7B TRAINING MANUAL
ENGINE TRANSPORTATION STAND
Identification (1.A.a)This section identifies the basic maintenance equipment to support CFM56-7 engine change using theengine transportation stand called a shipping dolly or cradle on the 737-600/-700/-800/-900/C40/BBJ airplane.
Equipment AM2563-227 Base, Universal Transportation Cradle for the CFM56-7 Engine and has three sections.- Engine Dolly Base- Cradle- Complete Stand
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CFM56-7B TRAINING MANUAL
ENGINE TRANSPORTATION STAND
ALF
AFT
FWD
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CFM56-7B TRAINING MANUAL
FAN COWLING
Identification (1.A.a)The CFM56-7 engine fan cowling and thrust reverser segments are hinged to the strut. To remove orinstall an engine, the fan cowls need to be removed to provide access to the forward engine groundhandling points. The fan cowls are held in the open position by integral hold-open rods for enginemaintenance when the engine is installed on the strut.
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FAN COWLING
HOLD OPEN ROD
FAN COWL
FAN COWL PINS
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LH STRUT QUICK DISCONNECTS
Identification (1.A.a)The CFM56-7 engine the quick disconnects must be removed for fuel, air, electrical, and hydraulics.
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LH STRUT QUICK DISCONNECTS
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RH STRUT QUICK DISCONNECTS
Identification (1.A.a)The CFM56-7 engine the quick disconnects must be removed for fuel, air, electrical, and hydraulics.
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RH STRUT QUICK DISCONNECTS
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ENGINE FIRE EXTINGUISHING TUBE
Identification (1.A.a)The CFM56-7 engine the fire extinguishing tube location.
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ENGINE FIRE EXTINGUISHING TUBE
ENGINE FIRE EXTINGUISHING TUBE
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PRE-COOLER LINES LH SIDE
Identification (1.A.a)The CFM56-7 engine pre-cooler and lines locations.
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PRE-COOLER LINES LH SIDE
PRE-COOLER LINES
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PRE-COOLER RH SIDE
Identification (1.A.a)The CFM56-7 engine pre-cooler location.
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PRE-COOLER RH SIDE
PRE-COOLER
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LH FAN FRAME ENGINE SUPPORT
Identification (1.A.a)The engine stand supports tools are found on the engine stand in boxes. This is the LH engine support for the fan frame.
Purpose (2.B.b)
The purpose of the engine supports are to maintain the stand to the engine fan frame and the aft engine turbine rear frame during transportation.
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LH FAN FRAME ENGINE SUPPORT
LH FAN FRAME ENGINE SUPPORT
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RH FAN FRAME ENGINE SUPPORT
Identification (1.A.a)The engine stand supports tools are found on the engine stand in boxes. This is the RH engine support for the fan frame.
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CFM56-7B TRAINING MANUAL
RH FAN FRAME ENGINE SUPPORT
RH FAN FRAME ENGINE SUPPORT
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LH FAN FRAME ENGINE SUPPORT
Identification (1.A.a)The LH engine stand supports is installed into the fan frame.
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LH FAN FRAME ENGINE SUPPORT
LH SUPPORT
LH SUPPORT
Detail ATop View
Detail A
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LH FAN FRAME ENGINE SUPPORT
Identification (1.A.a)The LH engine stand trunnion support is installed into the fan frame safety ball pin and a beveled pin.
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LH FAN FRAME ENGINE SUPPORT
LH SUPPORT
LH Trunnion
Beveled Pin
Ball Lock Pin
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RH FAN FRAME ENGINE SUPPORT
Identification (1.A.a)The LH engine stand trunnion support is installed into the fan frame safety ball pin and a beveled pin.
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RH FAN FRAME ENGINE SUPPORT
RH SUPPORT
RH Trunnion
Beveled Pin
Ball Lock Pin
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AFT LPT ENGINE SUPPORT
Identification (1.A.a)The AFT LPT engine support is installed to the turbine rear frame of the LPT.
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AFT LPT ENGINE SUPPORT
AFT CRADLE ARM SUPPORT
FWD
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ENGINE TRANSPORTATION STAND
Training Information Point (3.E.c)The thrust reverser latches may interfer with the engine transportation stand for the RH engine position #2.
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ENGINE TRANSPORTATION STAND
THRUST REVERSER LATCHES
ENGINE STAND FWD
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THRUST REVERSER ACTUATOR TOOLING
Identification (1.A.a)The thrust reverser actuator tooling is a hand pump and safety equipment used on the thrust reverser actuator.
The tool safety feature is the u-channel tool with two quick disconnect pins.
Purpose (2.B.b)The purpose of the thrust reverser actuator tooling is to open the thrust reverser by a hand pump , which uses engine oil. Using this system provides a backup safety feature inside the actuator that lowers slowly the thrust reverser in 11.5 seconds. The actuator when fully opened holds the thrust reverser in the open position by a locking collar another safety feature. The additional safety feature is the u-channel tool with two quick disconnect pins that prevents the thrust reverser from closing until them are removed.
Equipment C78005-21 Pump - Portable Hand, Thrust Reverser Cowl Opening System
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THRUST REVERSER ACTUATOR TOOLING
FWD
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TORQUE WRENCH
Purpose (2.B.b)
The purpose of the torque wrench is to correctly torque the engine mount bolts and obtain access to them with the swivel head feature in the strut area.
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TORQUE WRENCH
ENGINE MOUNT BOLTS
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FORWARD ENGINE MOUNT
Identification (1.A.a)The engine is attached to the strut at two locations. The forward engine mount system and the AFT engine mount.
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FORWARD ENGINE MOUNT
FWD ENGINE MOUNT
FWD
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AFT ENGINE MOUNT
Identification (1.A.a)The engine is attached to the strut at two locations. The forward engine mount system and the AFT engine mount.
The aft engine mount system consists of a mount assembly which is attached to the turbine rear frame, by four bolts. The Aft Mount Assembly includes a left, right center Link, and an evener bar assembly.
In conjunction with the engine mounts, a forward thrust link system is utilized to absorb fore and aftengine loads. The two forward arms of the thrust links are located on both sides of the fan frame. The aft linkage attaches to the strut.
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AFT ENGINE MOUNT
AFT ENGINE MOUNT
FWD
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AFT ENGINE MOUNT
Identification (1.A.a)The aft engine mount system consists of a mount assembly which is attached to the turbine rear frame, by four bolts.
In conjunction with the engine mounts, are attachment points for the AFT boot strap kit and hold open tooling that connect to the strut.
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BOLT
AFT BOOTSTRAP CONNECTION
TR HOLD OPEN CONNECTION
FWD
AFT ENGINE MOUNT
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THRUST REVERSER HOLD OPEN TOOLING
Identification (1.A.a)The thrust reverser is made in two halves ("C"-Ducts) which are raised open with integral actuators by a hydraulic pump. Once the "C"-Ducts are open, an automatic lock in the actuators holds each "C"-Duct open. The thrust revers actuator locks provide a backup for the locks in the actuators. When removing an engine, the actuators are disconnected and thrust reverser cowl hold-open rods are the only means of holding the "C"-Ducts open.
Equipment C78019-15 Equipment - Hold Open, Thrust Reverser Cowl, CFM56-7
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THRUST REVERSER HOLD OPEN TOOLING
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THRUST REVERSER HOLD OPEN TOOLING
Training Information Points (3.E.c)
WARNING: DO THESE SPECIFIED TASKS IN THE CORRECT SEQUENCE BEFORE YOU OPEN THE THRUST REVERSER: RETRACT THE LEADING EDGE, DO THE DEACTIVATION PROCEDURES FOR THE THE LEADING EDGE AND THE THRUST REVERSERS (FOR GROUND MAINTENANCE), AND OPEN THE FAN COWL PANEL. IF YOU DO NOT OBEY THE ABOVE SEQUENCE, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
NOTE: The hold-open equipment consists of a strut attach beam , two arm supports , two beam assemblies , two retention pins and lock pins and the hold-open equipment is symmetrical between the inboard and outboard sides.
WARNING: MAKE SURE YOU CORRECTLY ENGAGE EACH ARM SUPPORT INTO THE STRUT ATTACH BEAM. IF YOU DO NOT, THE HOLD-OPEN RODS WILL NOT HOLD THE WEIGHT OF THE THRUST REVERSER. INJURIES TO PERSONS CAN OCCUR.
NOTE: Make sure the longer side of the beam assembly faces forward.
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THRUST REVERSER HOLD OPEN TOOLING
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THRUST REVERSER HOLD OPEN TOOLING
Identification (1.A.a)The TR hold open tooling is installed to support the thrust reversers before the actuators are disconnected.
Purpose (2.B.b)The two adjustment pins of the, (C78005-21), are placed in the compression rod receiver cups on the thrust reversers which holds the TR in the open position.
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THRUST REVERSER HOLD OPEN TOOLING
LH SUPPORT TOOLING RH SUPPORT TOOLING
FWD FWD
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THRUST REVERSER HOLD OPEN TOOLING
Identification (1.A.a)The TR hold open tooling consists of:-2 Beam Assembly-2 Arm Support-2 adjustment pins-Strut Attach Beam Assembly-Pins for attachment
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CFM56-7B TRAINING MANUAL
THRUST REVERSER HOLD OPEN TOOLING
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THRUST REVERSER HOLD OPEN TOOLING
Purpose (2.B.b)The purpose of the thrust reverser hold open tooling is to support the thrust reverser during engine change when the actuators are disconnected. The adjustment pins provide the mechanical support of the TR.
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TR HOLD OPEN TOOL ADJUSTMENT PINS
THRUST REVERSER HOLD OPEN TOOLING
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CFM56-7B TRAINING MANUAL
BOOTSTRAP TOOLING
Identification (1.A.a)This section identifies the basic maintenance equipment to support CFM56-7 engine change using the bootstrap method on the 737-600/-700/-800/-900 airplane. Engine installation/removal is most commonly performed using a "bootstrap" hoist assembly and various other ground support equipment items. The engine as removed from the airplane is in the QEC configuration with the inlet cowl, exhaust sleeve and plug attached. Access to the bootstrap hard points is gained through the strutforward thumbnail fairing. The forward fairing has been designed with easy access in mind, there are 7quick release latches, which secure the fairing to the strut. There is in addition a forward strut accesspanel located on the aft portion of the forward fairing, this allows access to the starter ducts andpneumatic tubing located on the forward section of the strut.
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BOOTSTRAP TOOLING IN SHIPPING CONTAINER
FWD BOOT STRAP TOOLING
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BOOTSTRAP TOOLING
Purpose (2.B.b)The purpose of the bootstrap system is for installation/removal of the engine. The bootstrap equipment is used for removal and installation of the CFM56-7 engine and is used with the cradle. This system is a particular asset where an engine is changed at a remote site. The system includes a forward and an aft arm with lever hoists, dynamometers and engine attach brackets as integral components.
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BOOTSTRAP TOOLING
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FORWARD BOOTSTRAP TOOLING
Identification (1.A.a)The forward boot strap tooling consists of the following pieces:-inboard dynamometer-outboard dynamometer-2 chain hoists-Support beam 2 pieces-2 braces-7 Attachment Pins -2 shackles-Dynamometer attachment adapters and pins
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FORWARD BOOTSTRAP TOOLING
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FORWARD BOOTSTRAP ATTACHMENT POINTS
Identification (1.A.a)The forward boot strap tooling attachment points.
The strut thumbnail fairing is removed to access the attachment points.
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FORWARD BOOTSTRAP ATTACHMENT POINTS
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FORWARD BOOTSTRAP CONNECTIONS
Identification (1.A.a)The forward boot strap tooling installed on the CFM56-7 strut detail connections.
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FWD BOOTSTRAP CONNECTIONS
FWD BOOTSTRAPSUPPORT CONNECTIONS
Page 72EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
FORWARD BOOTSTRAP CONNECTIONS
Identification (1.A.a)The forward boot strap tooling installed on the CFM56-7 strut detail connections.
Page 73EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
FORWARD BOOTSTRAP CONNECTIONS
Safety Pin
Attachment Pin
Attachment Pins
Page 74EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
FORWARD BOOTSTRAP INSTALLED
Identification (1.A.a)The forward boot strap tooling installed on the CFM56-7 strut.
Page 75EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
FORWARD BOOTSTRAP INSTALLED
Page 76EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
RH BOOTSTRAP CONNECTION
Training Information Points (3.E.c)
NOTE: After the bootstrap equipment is installed on the airplane, you must use all four persons to remove the power plant. Apply a load to the lever hoists as follows:
NOTE: The load values given below include the necessary preload force and the weight of the engine.
1) The forward inboard dynamometer reads 3700±100 pounds (1682±45 kilograms).
2) The forward outboard dynamometer reads 3200±100 pounds (1454±45 kilograms).
3) The aft dynamometer reads 1100±100 pounds (500±45 kilograms).
4) During installation of the engine, a total preload of 200 pounds (91 kilograms) is required to compress the seal on the engine to the strut.
NOTE: Use an 11/16-inch or 15/16 socket to loosen the bolts.
Page 77EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
RH BOOTSTRAP CONNECTION
RH TRUNNION
DYNAMOMETERRH CHAIN HOIST
FWD BOOTSTRAPSUPPORT
Page 78EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
FORWARD RH BOOTSTRAP CONNECTION
Training Information Points (3.E.c)
The forward outboard dynamometer should read 3200±100 pounds (1454±45 kilograms).
Engine position number 2, trunnion, is bolted to the fan frame.
Page 79EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
RH BOOTSTRAP CONNECTION
RH FWD TRUNNION BOLTS
RH CONNECTION TO FAN FRAME
FWD
ADJUSTABLE JAM NUT
Page 80EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
BOOTSTRAP CONNECTIONS
Training Information Points (3.E.c)
- The forward inboard dynamometer reads 3700±100 pounds (1682±45 kilograms). DO NOT APPLY MORE THAN 3850 POUNDS (1750 KG) TO THE FORWARD INBOARD DYNAMOMETER
-The forward outboard dynamometer should read 3200±100 pounds (1454±45 kilograms).
DO NOT APPLY MORE THAN 3350 POUNDS (1520 KG) TO THE FORWARD OUTBOARD DYNAMOMETER
- The aft dynamometer reads 1100±100 pounds (500±45 kilograms). DO NOT APPLY MORE THAN 1300 POUNDS (590 KG) TO THE AFT DYNAMOMETER.
WARNING:
IF YOU APPLY MORE THAN THE LIMITS, DAMAGE TO THE POWER PLANT, WING AND STRUT CAN OCCUR.
MAKE SURE THERE ARE NO SPIRAL TWISTS IN THE LEVER HOIST CHAIN BETWEEN THE LEVER HOIST.
HOUSING AND ITS LOWER BLOCK (THE ATTACH POINT FOR THE DYNAMOMETER). IF YOU SEE A TWIST IN THE CHAIN, YOU MUST REMOVE IT. IF YOU DO NOT REMOVE IT, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
Note: During installation of the engine, a total preload of 200 pounds (91 kilograms) is required to compress the seal on the engine to the strut.
Page 81EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
BOOTSTRAP CONNECTIONS
LH DYNAMOMETER CONNECTION RH DYNAMOMETER CONNECTION
LH DYNAMOMETER CONNECTION
LH TRUNNION
RH DYNAMOMETER CONNECTION
RH TRUNNION
Page 82EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
FORWARD LH BOOTSTRAP CONNECTION
Training Information Points (3.E.c)
The forward inboard dynamometer should read 3700 ±100 pounds (1454±45 kilograms).
Engine position 2 is shown.
Page 83EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
FWD LH BOOTSTRAP CONNECTION
DYNAMOMETER
LH TRUNNION
Page 84EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
FORWARD LH BOOTSTRAP CONNECTION
Training Information Points (3.E.c)
The forward inboard dynamometer should read 3700 ±100 pounds (1454±45 kilograms).
Engine position 2 is shown.
Page 85EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
FWD LH BOOTSTRAP CONNECTION
Page 86EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
AFT BOOTSTRAP CONNECTIONS
Training Information Points (3.E.c)
The aft engine bootstrap system consists of a tooling assembly which is attached to the strut by two pins.
Page 87EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
AFT BOOTSTRAP CONNECTIONS
LH AFT BOOTSTRAP CONNECTION AFT BOOTSTRAP CONNECTIONS
FWD FWD
Attach point Attach points
Page 88EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
AFT BOOTSTRAP TOOLING
Identification (1.A.a)
The aft engine bootstrap system consists of a tooling assembly which is attached to the strut by:
- Lock pins
- Center Beam
- Forward support brace
- AFT support brace
Page 89EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
AFT BOOTSTRAP TOOLING
Page 90EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
AFT BOOTSTRAP CONNECTIONS
Identification (1.A.a)
The aft engine bootstrap system tooling assembly which is attached turbine rear frame Engine 2 on the RH side support, engine 1 LH side.
Page 91EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
ENGINE 1 AFT BOOTSTRAP CONNECTION
AFT BOOTSTRAP CONNECTIONS
ENGINE 2 AFT BOOTSTRAP CONNECTION
Page 92EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
AFT BOOTSTRAP RH CONNECTION
Identification (1.A.a)
The aft engine bootstrap support has a dynamometer and chain hoist to support the aft end of the engine..
Page 93EFFECTIVITY 737-600/700/800/900/BBJ/C40A&B CFM PROPRIETARY INFORMATION 71-00-00Jan. 2003
CFM56-7B TRAINING MANUAL
AFT BOOTSTRAP RH CONNECTION
DYNAMOMETER
AFT CHAIN HOIST
AFT BOOTSTRAP SUPPORT