Enerpac LGH Series User manual

1
Instruction Sheet
Hydraulic Lock Grip Pullers
LGH-Series
POWERFUL SOLUTIONS. GLOBAL FORCE.
L4256 Rev. C 11/19 EN
1.0 IMPORTANT RECEIVING INSTRUCTIONS
Visually inspect all components for shipping damage. Shipping
damage is not covered by warranty. If shipping damage is
found, notify carrier at once. The carrier is responsible for
all repair and replacement costs resulting from damage in
shipment.
2.0 SAFETY
2.1 Introduction
Read all instructions carefully. Follow all recommended safety
precautions to avoid personal injury as well as damage to the
product and/or damage to other property. Enerpac cannot be
responsible for any damage or injury from unsafe use, lack of
maintenance or incorrect operation. Do not remove warning
labels, tags, or decals. In the event any questions or concerns
arise, contact Enerpac or your local Enerpac distributor for
clarification.
If you have never been trained on high force tool safety,
consult your distributor or service center for information about
an Enerpac Safety Course.
This manual follows a system of safety alert symbols, signal
words and safety messages to warn the user of specific
hazards. Failure to comply with these warnings could result
in death or serious personal injury, as well as damage to the
equipment or other property.
The Safety Alert Symbol appears throughout this
manual. It is used to alert you to potential physical
injury hazards. Pay close attention to Safety Alert
Symbols and obey all safety messages that follow this symbol
to avoid the possibility of death or serious personal injury.
Safety Alert Symbols are used in conjunction with certain
Signal Words that call attention to safety messages or
property damage messages and designate a degree or level
of hazard seriousness. The Signal Words used in this manual
are WARNING, CAUTION and NOTICE.
WARNING
Indicates a hazardous situation that, if not
avoided, could result in death or serious
personal injury.
CAUTION
Indicates a hazardous situation that, if not
avoided, could result in minor or moderate
personal injury.
NOTICE
Indicates information considered important,
but not hazard related (e.g. messages relating
to property damage). Please note that the
Safety Alert Symbol will not be used with this
signal word.
2.2 Safety Precautions - Hydraulic Lock Grip Pullers
WARNING
Failure to observe and comply with the following
precautions could result in death or serious personal
injury. Property damage could also occur.
• Read and completely understand the safety precautions
and instructions in this manual before operating the puller or
preparing it for use.
• Wear appropriate personal protective equipment (PPE) such
as safety glasses and face shield. The operator must take
precautions against injury due to flying debris caused by
possible failure of the tool or workpiece.
• During operation, keep hands and fingers away from the
work area to avoid personal injury.
• Know the puller rated capacity before beginning any work.
• Do not use the puller in circumstances where a sudden
release of hydraulic pressure could result in loss of balance,
causing damage or injury.
• Never overload the puller or accessories. Never exceed
puller maximum capacities or maximum allowable hydraulic
working pressures. Refer to Sections 10.1 and 10.2 of this
manual for detailed puller capacity information and pressure
limits. Also observe and follow all operating precautions
communicated in Section 7.0 of this manual.
• Be aware that puller capacity will vary, depending on the
puller model, configuration and other variables.
Table of Contents:
1.0 IMPORTANT RECEIVING INSTRUCTIONS.................1
2.0 SAFETY.........................................................................1
3.0 CONFORMANCE TO NATIONAL AND
INTERNATIONAL STANDARDS....................................2
4.0 PRODUCT DESCRIPTION ...........................................3
5.0 HYDRAULIC SYSTEM ..................................................3
6.0 SETUP AND ASSEMBLY ..............................................4
7.0 INSTALLATION AND OPERATION ...............................4
8.0 INSPECTION, MAINTENANCE & STORAGE ............ 11
9.0 TROUBLESHOOTING ................................................ 11
10.0 CAPACITIES .............................................................13
11.0 PRODUCT DATA .......................................................14

2
• Never attempt to pry the puller by inserting tools or other
objects between the jaws. This may cause spindle damage.
• Use hydraulic pressure gauges to verify proper operating
pressure in the hydraulic system. Do not exceed maximum
pressure limits of the lowest rated component in your
system. Always use high pressure hoses and fittings.
• It is impossible to predict the exact force needed for every
pulling situation. The amount of press fit and force of removal
can vary greatly between jobs. Set-up requirements along
with the size, shape and condition of the parts being pulled
are variables which must be considered. Study each pulling
application before you select your puller.
• Do not overload equipment. Use the correct size puller for
your application. If you have applied maximum force, and the
part still will not move, then use a larger capacity puller. Use
of a sledge hammer to loosen parts is not recommended.
• Do not use puller if threads on spindle, threaded collar or
hydraulic cylinder are damaged or worn. Do not use puller if
spindle is bent.
• Do not over-extend the hydraulic cylinder. Do not operate
the cylinder beyond the limits of its rated stroke.
• Align puller grip jaws as required. Be sure the setup is rigid
and that puller is square with the work. Apply force gradually.
• Never use a puller that is damaged, altered or in need of
repair.
• Always be sure that the spindle is loosened and hydraulic
pressure is completely relieved before performing any puller
adjustment or repair procedures. Never service the puller
while it is installed and under tension.
• Always read, understand and follow all safety precautions
and instructions, including those that are contained within
the procedures of this manual.
2.3 Additional Hydraulic Safety Precautions
WARNING
Failure to observe and comply with the following
precautions could result in death or serious personal
injury. Property damage could also occur.
• Do not remove or disable the pump relief valve. Never set
the relief valve to a higher pressure than the maximum rated
pressure of the pump.
• The puller hydraulic cylinder is designed for a maximum
pressure of 10,150 psi [700 bar]. Do not connect a pump
with a higher pressure rating to the cylinder.
• To avoid personal injury and equipment damage, make sure
all hydraulic components are rated for at least 10,150 psi
[700 bar] working pressure.
• The system operating pressure must not exceed the
pressure rating of the lowest rated component in the system.
Install pressure gauge(s) in the system to monitor operating
pressure. It is your window to see what is happening in the
system.
• Make sure that all system components are protected from
external sources of damage, such as excessive heat,
flame, moving machine parts, sharp edges and corrosive
chemicals.
• Do not handle pressurized hoses. Escaping oil under
pressure can penetrate the skin. If oil is injected under the
skin, seek medical attention immediately.
• Always visually inspect the puller and puller hydraulic
system before placing it into operation. If any problems are
found, do not use the puller. Have the equipment repaired
and tested before it is returned to service.
• Never use a hydraulic cylinder that is leaking oil. Do not use
a cylinder that is damaged, altered or in need of repair.
• Do not loosen plugs, relief valves or any other hydraulic
components unless hydraulic pressure is completely
relieved.
• Avoid damaging hydraulic hose. Avoid sharp bends and
kinks when routing hydraulic hoses. Using a bent or kinked
hose will cause severe back-pressure. Sharp bends and
kinks will internally damage the hose, leading to premature
hose failure.
• Do not drop heavy objects on hose. A sharp impact may
cause internal damage to hose wire strands. Applying
pressure to a damaged hose may cause it to rupture.
• Always read, understand and follow all safety precautions
and instructions, including those that are contained within
the procedures of this manual.
CAUTION
Failure to observe and comply with the following
precautions could result in minor or moderate personal
injury. Property damage could also occur.
• Do not lift hydraulic equipment by the hoses or swivel
couplers. Use the carrying handle or strap.
• Keep hydraulic equipment away from flames and heat.
Excessive heat will soften packings and seals, resulting in
fluid leaks. Heat also weakens hose materials and packings.
For optimum performance, do not expose equipment to
temperatures of 150˚F [65˚C] or higher. Protect all hydraulic
equipment from weld spatter.
• Immediately replace worn or damaged parts with genuine
Enerpac parts. Enerpac parts are designed to fit properly
and to withstand high loads. Non-Enerpac parts may break
or cause the product to malfunction.
NOTICE
• Hydraulic equipment must only be serviced by a qualified
hydraulic technician. For repair service, contact the Enerpac
Authorized Service Center in your area.
• To help ensure proper operation and best performance, use
of Enerpac oil is strongly recommended.
3.0 CONFORMANCE TO NATIONAL AND
INTERNATIONAL STANDARDS
Enerpac declares that this product has been tested
and conforms to applicable standards and is
compatible with all CE Requirements. A copy of an
EU Declaration is enclosed with each shipment of this product.
1
2
3
6
4
5
7
Figure 1, Features and Major Components
Key:
1. Spindle
2. Handle
3. Upper Body
4. Lower Body
5. Jaw
6. Cylinder
7. Point Protector

3
4.0 PRODUCT DESCRIPTION
4.1 Lock Grip Hydraulic Puller (LGH-Series)
The Lock Grip Hydraulic puller can be used to remove and
install gears, bearings and pulleys.
Different puller models in a variety of capacities are available.
Refer to the documentation provided with your shipment for
model numbers and additional product data.
The Lock Grip puller’s synchronized closing system means
that all jaws move in unison, reducing the chance of damage
to the puller components and making the puller easier and
safer to use.
4.2 Hydraulic Set (LGHS-Series)
The Enerpac Hydraulic Set includes the following items:
• Hydraulic Lock Grip Puller (LGH-Series).
• Hydraulic pump, electric, air, battery or hand operated.
• Hydraulic hose, 6 feet [1.8 m] long.
• Hydraulic pressure gauge and gauge adapter.
• Hydraulic cylinder with coupler.
The specific items included in the Hydraulic Set will vary,
depending on the puller size and the pump type ordered.
4.3 Hydraulic Master Set (LGHMS-Series)
The Enerpac Hydraulic Master Set includes all the items of the
Hydraulic Set plus the following additional items:
• Bearing Cup Puller Attachment
• Cross Bearing Puller Components
• Bearing Separator Attachment
• Mounting and attaching hardware
These attachments allow the puller to be configured as a
bearing cup puller or as a cross style bearing puller, refer to
Figure 2. They are designed for work environments where
clearance prevents a direct application of the puller jaws.
For these configurations, the grip puller jaws, puller body and
self-centering mechanism are not used.
The specific items included in the Hydraulic Master Set will
vary, depending on the puller size and the pump type ordered.
5.0 HYDRAULIC SYSTEM
5.1 Hydraulic Component Requirements
All hydraulic components used with the puller, including pump,
cylinder, pressure gauge, hoses and fittings must be rated for
at least 10,150 psi [700 bar] maximum working pressure.
The pump must include a safety relief valve that opens if the
maximum hydraulic working pressure of 10,150 psi [700 bar]
is exceeded.
WARNING
Pump safety relief valve must not be set
higher than 10,150 psi [700 bar]. Failure to observe this
precaution could result in high pressure oil leaks and/or
catastrophic failure. Serious personal injury or death
could result.
Electric, air and battery powered pumps must also include
a user-adjustable relief valve, allowing the user to adjust the
maximum working pressure to the correct setting for the puller
application. For some puller configurations and applications,
this setting will be less than the pump safety relief valve setting.
This information is provided for users who may wish to use
the puller with the existing hydraulic components in their shop
facilities. All hydraulic components included in an Enerpac
Lock Grip Puller Set or Master Puller Set will conform to the
stated specifications and requirements.
5.2 Hydraulic Cylinder
The hydraulic cylinder is pre-assembled in the body of the
Lock Grip puller. When needed, the cylinder can be removed
from the Lock Grip puller for use with various Master Puller Set
components. Refer to the following table for hydraulic cylinder
usage information:
Hydraulic Cylinder Usage Information
Enerpac
Cylinder
Model No.
Lock Grip
Puller
Model No.
Master Puller Set Compo-
nents
Cross
Bearing
Puller
Bearing
Separator
Bearing
Cup
Puller
RWH101B100 LGH210/310 BHP112 BHP181 BHP180
RWH121 LGH214/314 BHP172 BHP282 BHP190
RCH202 LGH224/324 BHP272 BHP292 BHP280
RCH603 LGH253/364 BHP672 BHP682 BHP580
Figure 2, Hydraulic Puller Configurations (Typical)
Lock Grip Puller Cross Bearing Puller and
Bearing Separator
Cross Bearing Puller and
Bearing Cup Puller

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WARNING
Use only the Enerpac cylinder specified for
your puller model. Improper operation and/or catastrophic
failure could occur if a different cylinder is used. Serious
personal injury or death may result.
5.3 Checking oil level
NOTICE
Check the oil level in the pump reservoir with the
cylinder fully retracted. Add oil if level is low. Refer to the
pump instruction sheet for detailed instructions and oil type.
Be sure to use a high quality hydraulic oil. Use of Enerpac oil
is strongly recommended.
5.4 Advancing and Retracting the Cylinder
• To advance: Close the pump release valve. Operate the
pump to build pressure and advance the cylinder.
• To retract: Open the pump release valve to release pressure
and retract the cylinder.
For detailed hydraulic component operating instructions, refer
to the instruction sheet included with the pump, hose, pressure
gauge and hydraulic cylinder. Completely observe and follow
all communicated instructions and safety precautions.
5.5 Air Removal
To remove trapped air from the hydraulic circuit, fully advance
and retract the puller cylinder several times while it is not under
load. If possible, position the cylinder so that it is lower than
the pump reservoir. Avoid pressure build-up as the cylinder is
being cycled. Air removal is complete when cylinder motion
becomes smooth.
6.0 SETUP AND ASSEMBLY
6.1 Handling Large Pullers
• Use a crane and slings of suitable rated capacity to lift and
unload the puller.
• Know the weight of the complete puller assembly, including
puller, hydraulic cylinder and all attachments.
• If needed, support the puller with slings so that it can be
used horizontally. When reorienting the puller from horizontal
to the vertical position, incline the puller slowly and carefully.
6.2 Puller Configurations
The Lock Grip Puller may be purchased with accessories
designed for special applications:
1. The Cross Bearing Puller
2. The Bearing Cup Puller
3. The Bearing Separator
Refer to Figure 8, Figure 9 and Figure 10 for assembly details.
These accessories are described in Sections 7.4, 7.5 and 7.6.
7.0 INSTALLATION AND OPERATION
Before operating any high force tool equipment, it is mandatory
that the operator has a full understanding of all instructions
and safety precautions included in this manual, and of all
applicable local safety regulations and laws. If questions or
concerns, contact the Enerpac Technical Service Department
or your local Enerpac distributor.
7.1 Spindle Point Protector
All models feature a threaded spindle with a tempered steel
point.
A point protector is packed with all LGH-Series models. To
prevent damage, the point protector MUST be used if the
shaft end does not contain a drilled center hole or depression.
See Figure 3.
7.2 General Puller Use Instructions
• Be sure that the puller spindle is cleaned and greased before
use.
• Be sure that the jaws are properly centered on the item to
be removed.
• Position the point of the spindle into the center hole of the
shaft or axle. If there is no center hole, use a point protector
(included with all pullers).
• After mounting the puller on the part to be removed, be
certain that the thread engagement indicator is visible. See
Figure 4 for location. If the spindle is turned clockwise too
many turns, the indicator will be hidden, indicating that the
amount of thread engagement is not sucient.
WARNING
Do not operate the puller if the thread
engagement indicator is not visible. Catastrophic failure
could occur if the amount of thread engagement is not
sufficient. Serious personal injury or death may result.
• Continuously monitor the hydraulic pressure gauge while
operating the pump and puller. Stop the pump immediately
if the maximum allowable hydraulic pressure for your puller
model and configuration is reached.
• During operation, watch the puller for indications of jaw or
spindle deformation. See Figure 5. If any deformation is
noticed, stop the pump immediately.
• In some applications, the amount of deformation may
be so small that it is not noticeable. Never rely on visible
deformation to determine the puller’s safe operating limits.
Always monitor the hydraulic pressure gauge.
• Work slowly when operating the puller in order to prevent
any sudden or unexpected displacement of parts being
removed.
OK OK
Point Protector
OK OK
Figure 3, Point Protector
Figure 4, Thread engagement indicator (red band)

5
7.3 Puller Installation and operation
WARNING
Before operating it is mandatory that the
operator has a full understanding of all instructions and
safety precautions included in this manual, and of all
applicable local safety regulations and laws. If there are
any questions or concerns, contact the Enerpac Technical
Service Department or your local Enerpac distributor.
1. Rotate the spindle to adjust the spindle height up
or down. Rotate the handle to increase or decrease
the jaw opening. Adjust the jaws and spindle to allow
the puller to be mounted onto the workpiece. Refer to
Figure 6, views 1 through 4 during the following steps.
Also refer to the tables contained in Figure 7 and Section 11.1
for information regarding workpiece maximum height and
width limits (puller maximum reach and spread).
CAUTION
The handle threads do not have a stop. Be
careful not to fully unscrew the handle when adjusting
the jaw opening. Puller jaws will loosen and open fully if
threads become disengaged.
2. Place the puller on the workpiece. Position the jaws around
the part to be removed and align the spindle point with the
center of the shaft.
NOTICE
If the end of the shaft is flat, install the point protector
between the shaft end and the spindle point. Refer to Section
7.1.
3. Rotate handle clockwise until jaws securely grip the
circumference of the shaft. Rotate spindle clockwise by hand
until the bottom of the spindle contacts the recessed area of
the shaft or the point protector (if used).
NOTICE
The spindle and the jaws must engage the workpiece,
and achieve at least the minimum reach and spread.
4. Apply pressure with the pump to drive the spindle against
the work surface until the work piece is completely extracted.
WARNING
Overloading and catastrophic failure could occur if the
stated maximum pressure limit for your puller model and
configuration is exceeded. Serious personal injury or
death may result.
Refer to Section 10.0 of this manual for the maximum
hydraulic working pressure applicable to your Hydraulic
Lock Grip Puller model.
Figure 5, Checking for Deformation
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3 4
Figure 6, Puller Installation Steps

6
Ø B1
A1
Ø B2
A2
Ø B3
A3
Figure 7, Puller Maximum Reach and Spread Examples (three pulleys of different sizes)
Example A Example B Example C
Puller Model Number
A1 B1 A2 B2 A3 B3
in mm in mm in mm in mm in mm in mm
LGH210 / LGH310 3.94 100 11.81 300 5.71 145 9.84 250 8.07 205 7.87 200
LGH214 / LGH314 4.41 112 14.96 380 7.28 185 11.61 295 9.84 250 8.66 220
LGH224 / LGH324 5.91 150 18.90 480 9.06 230 15.35 390 12.40 315 11.22 285
LGH253 / LGH364 6.50 165 25.98 660 11.22 285 20.67 525 14.96 380 15.75 400
Note: See Section 11.71 for additional information.
Example A Example B Example C

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1
3
6
7
89
10
11 (3:10)
2
4
5
Figure 8, Setup and Assembly - Lock Grip Puller
Key:
1. Spindle
2. Washer
3. Set screw
4. Handle + cap
5. Nut
6. Strap screw
7. Upper body
8. Support nut
9. Base screw
10. Threaded base
11. Hydraulic cylinder
Note: This figure shows an exploded view of the
two-jaw puller configuration. The figure may be used
to aid in the assembly of the two- and three-jaw
configurations.
Note: Components shown in this figure are included
with the LGHS-Series Lock Grip Puller Set and the
LGHMS-Series Master Puller Set.
Note: Refer to the document L4257 (www.enerpac.
com) to find the suitable repair part kit for each
model of Hydraulic Lock Grip Puller.
Two-jaw Configuration
(Models LGH210, LGH214, LGH224 and LGH253)
(Assembled View)

8
Figure 9, Setup and Assembly - Cross Bearing Puller and Bearing Cup Puller
1
2
3
4
56
7
8
8
8
10
11
12
9
(Assembled View)
(Assembled View with extensions)
Key:
1. Spindle
2. Threaded Saddle
3. Hydraulic Cylinder
4. Hex Nut
5. Washer
6. Slotted Crosshead
7. Leg Washer
8. Leg (various lengths)
9. Leg Reducer
10. Leg End
11. Mounting Screw
12. Bearing Cup Puller
Note: Components shown in this figure are included
with the LGHMS-Series Master Puller Set.

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Figure 10, Setup and Assembly - Cross Bearing Puller and Bearing Separator
6
1
12
11
4
5
6
8
3
2
7
8
8
9
10
(Assembled View - With Bearing Separator)
Key:
1. Spindle
2.Threaded Saddle
3. Hydraulic Cylinder
4. Hex Nut
5. Washer
6. Slotted Crosshead
7. Leg Washer
8. Leg (various lengths) *
9. Leg Reducer
10. Leg End
11. Mounting Screw
12. Bearing Separator Attachment **
(Assembled View - Cross Bearing Puller)
Note: Components shown in this figure are included in
the LGHMS-Series Master Puller Set.
( * ) See Section 11.7 for Legs specification.
( ** ) See Section 11.4 for Bearing Separator specifications

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7.4 Cross Bearing Puller - Installation and Operation
The cross bearing puller may be used independently by
attaching the legs directly to the workpiece to be extracted
(see Figure 11). In this case, the puller legs must be threaded
directly into the workpiece (refer to Section 11.7 for thread
specifications). Alternatively, the cross bearing puller may be
used in conjunction with the Bearing Separator Attachment(see
Section 7.5) or the Bearing Cup Puller (see Section 7.6).
• Assemble puller components as described in Figure 10.
• Install the puller on the bearing, pulley or other item to be
removed. Align puller legs. See Figure 11.
• If needed for your application, install the bearing separator
attachment. Refer to Section 7.5.
• Read and understand the following warning statement before
proceeding. Also refer to Section 10.0 of this manual for
important maximum hydraulic working pressure information.
WARNING
Do not exceed the stated maximum hydraulic working
pressure for the cross bearing puller model being used.
Refer to Section 10.0 of this manual for the maximum
hydraulic working pressure applicable to your cross
bearing puller model. Be aware that the cross bearing
puller is rated at a lower maximum capacity than the
hydraulic cylinder.
Overloading and catastrophic failure could occur if the
stated maximum pressure limit is exceeded. Serious
personal injury or death may result.
• Connect pump and hose to the puller hydraulic cylinder. Be
sure that a pressure gauge is installed in the circuit.
• Gradually apply hydraulic pressure to remove the part.
Continuously monitor the pressure gauge to avoid exceeding
the allowable maximum working pressure for your setup.
7.5 Bearing Separator Attachment
The bearing separator attachment can be used in combination
with the cross bearing puller when the application allows
the Bearing Separator to be inserted under the piece to be
extracted.
NOTICE
Never leave a gap between the legs of the Cross
Bearing Puller and the body of the workpiece, as this could
result in damage to the bearing separator (see Figure 12).
The bearing separator attachment contains wedge shaped
edges, allowing it to be more easily positioned behind a
difficult-to-reach bearing, pulley or other shaft-mounted
component. It has two halves, each containing a “flat” side
and a “recessed” side.
Whenever possible, it is recommended that the attachment
be installed in the “A” orientation, as shown in Figure 13, so
that the flat side of each separator half is positioned against
the part to be removed. This will help spread the load over a
greater surface area, reducing the possibility of deformation.
However, for applications where work room is especially
limited, it may be necessary to begin the pulling process
with the attachment installed in the “B” orientation, as shown
in Figure 14. In this orientation, the recessed side of each
separator half is positioned against the part to be removed.
After the part has been moved a sufficient distance on
the shaft, the attachment should be reinstalled in the “A”
orientation. The removal process can then be fully completed.
When using the bearing separator attachment, follow the
instructions and precautions contained in Section 7.4 of
this manual. Also refer to Section 10.0 for maximum rated
capacities and related information.
Figure 11, Cross Bearing Puller (typical)
Figure 12, Bearing Separator bending prevention
Figure 13, Bearing Separator Attachment -
“A” Orientation (typical)
Gap
A
BB
AOK

11
7.6 Bearing Cup Puller - Installation and Operation
The bearing cup puller is designed to extract the bearing
placed in an internal housing. This tool must be used in
combination with the Cross Bearing Puller attachment.
• Assemble puller components as shown in Figure 9.
• Install the puller on the bearing to be removed. Align puller
legs and bearing cup puller jaws. See Figure 15.
• Read and understand the following warning statement
before proceeding. Also refer to Section 10.0 of this
manual for important maximum hydraulic working pressure
information.
WARNING
Do not exceed the stated maximum hydraulic working
pressure for the bearing cup puller model being used.
Refer to Section 10.0 of this manual for the maximum
hydraulic working pressure applicable to your bearing cup
puller model. Be aware that the bearing cup puller is rated
at a lower maximum capacity than the hydraulic cylinder.
Overloading and catastrophic failure could occur if the
stated maximum pressure limit is exceeded. Serious
personal injury or death may result.
• Connect pump and hose to the puller hydraulic cylinder. Be
sure that a pressure gauge is installed in the circuit.
• Gradually apply hydraulic pressure to remove the bearing.
Continuously monitor the pressure gauge to avoid exceeding
the allowable maximum working pressure for your setup.
8.0 INSPECTION, MAINTENANCE & STORAGE
Maintenance is required when wear or leakage is noticed.
Periodically inspect all components to detect any problem
requiring maintenance or service.
• Periodically check the hydraulic system for loose
connections, leaks and other obvious problems. Replace
any damaged components immediately.
• Monitor the oil temperature during operation. Do not exceed
oil temperatures of 140°F [60°C].
• Keep all hydraulic components clean.
• Keep the puller in good condition. Clean and lubricate the
puller’s spindle and puller legs frequently, from thread to tip,
to ensure good operation and long life.
• Change the hydraulic oil in your system as recommended
in the pump instruction sheet. Use of Enerpac oil is strongly
recommended.
• Periodically check the puller for any bent, loose, worn or
deformed components. Make repairs as required before
using the puller.
• Store the puller in a clean, dry and secure location. Keep
stored hydraulic cylinders and hoses away from heat and
direct sunlight.
• If the puller requires repairs, refer to the Enerpac website for
the repair parts sheet applicable to your puller model.
NOTICE
• Hydraulic equipment must only be serviced by a qualified
hydraulic technician. For repair service, contact the Enerpac
Authorized Service Center in your area.
• Refer to the document L4257 (www.enerpac.com) to find
the suitable repair part kit for each model of Hydraulic Lock
Grip Puller.
• Visit www.enerpac.com in order to find further information
about the cylinder used in each Puller.
9.0 TROUBLESHOOTING
Refer to the troubleshooting guide (see next page) when
diagnosing puller operational problems. Please note that
the troubleshooting guide is not all-inclusive, and should be
considered only as an aid to help diagnose the most commonly
anticipated problems.
For repair service, contact your nearest Enerpac Authorized
Service Center. As required, also refer to the troubleshooting
information provided with the hydraulic pump and cylinder.
Figure 14, Bearing Separator Attachment -
“B” Orientation (typical)
Figure 15, Cross Bearing Puller with
Bearing Cup Attachment (typical)

12
Troubleshooting Guide, LGH-Series Lock Grip Pullers
Puller Mechanical Troubleshooting
Symptom Possible Cause Solution
1. Jaws do not move
freely or are difficult to
move.
Self-centering mechanism corroded or seized. Inspect self-centering mechanism. If corroded or seized,
apply penetrating oil. Dismantle and clean mechanism
as required.
2. One jaw moves
independently.
Self-centering strap damaged or broken. Replace self-centering strap.
Replace complete self-centering mechanism if needed.
3. Spindle will not turn
or requires excessive
effort to turn.
a. Corroded threads on spindle, cylinder or threaded
saddle.
If parts are seized, apply penetrating oil.
Inspect threads on spindle, cylinder and threaded sad-
dle. Dismantle and clean components as required.
b. Worn or damaged threads. Replace spindle, hydraulic cylinder and/or threaded
saddle as required.
Do not use puller if threads are worn or damaged.
c. Spindle is bent. Replace spindle.
Do not use puller if spindle is bent.
Hydraulic System Troubleshooting
Symptom Possible Cause Solution
1. Cylinder will not
advance.
a. Pump release valve open. Close pump release valve.
b. Pump oil level is low. Add oil to pump reservoir as required.
c. Air in hydraulic system. Remove air from hydraulic system. Refer to Section 5.5.
d. Couplers not fully tightened. Tighten couplers.
e. Blocked hydraulic hose. Repair or replace hydraulic hose.
f. Pump malfunctioning. Repair or replace pump as required.
g. Cylinder seals leaking. Repair or replace cylinder.
2. Cylinder advances
only part way.
a. Pump oil level is low. Add oil to pump reservoir as required.
b. Couplers not fully tightened. Tighten couplers.
c. Cylinder plunger binding. Repair or replace cylinder.
3. Cylinder advances
erratically.
a. Air in hydraulic system. Remove air from hydraulic system. Refer to Section 5.5.
b. Cylinder plunger binding. Repair or replace cylinder.
4. Cylinder advances
more slowly than
normal.
a. Leaking connection. Repair leaking connection.
b. Couplers not fully tightened. Tighten couplers.
c. Pump malfunctioning. Repair or replace pump as required.
5. Cylinder advances,
but will not hold.
a. Cylinder seals leaking. Repair or replace cylinder.
b. Leaking or loose connection. Repair leaking connection.
c. Pump malfunction. Repair or replace pump.
6. Cylinder leaks oil. a. Leaking or loose connection. Repair leaking connection.
b. Worn or damaged cylinder plunger. Repair or replace cylinder.
c. Internal leakage. Repair or replace cylinder.
7. Cylinder will not
retract or retracts more
slowly than normal.
a. Pump release valve closed. Open pump release valve.
b. Coupler not fully tightened. Tighten coupler.
c. Pump reservoir is overfilled. Drain oil from pump reservoir as required.
d. Blocked hydraulic hose. Repair or replace hydraulic hose.
e. Internal cylinder damage. Repair or replace cylinder.

13
Puller
Model
No.
Hydraulic
Cylinder
Model
No.
Quantity
of Jaws
Installed
Puller Maximum
Rated Capacity
Cylinder Maximum
Rated Capacity
Maximum allowable
hydraulic working
pressure when cylinder
is installed on puller:
US Tons kN US Tons kN psi bar
LGH210 RWH101B100 210.3 91.7 10.3 91.7
10.150 700
LGH214 RWH121 214.0 124.6 14.0 124.6
LGH224 RCH202 224.2 215.0 24.2 215.0
LGH253 RCH513 252.5 467.3 52.5 467.3
LGH310 RWH101B100 310.3 91.7 10.3 91.7
LGH314 RWH121 314.0 124.6 14.0 124.6
LGH324 RCH202 324.2 215.0 24.2 215.0
LGH364 RCH603 364.7 576.0 64.7 576.0
Accessory
Accessory
Model
Number
No.
Hydraulic
Cylinder
Model No.
Accessory Maximum
Rated Capacity
Cylinder Maximum
Rated Capacity
Maximum allowable
hydraulic working
pressure when cylinder
is used with accessory:
US Tons kN US Tons kN psi bar
Cross Bearing
Puller Set
BHP112 RWH101B100 7.0 75 10.3 91.7 6898 476
BHP172 RWH121 7.0 75 14.0 124.6 5076 350
BHP272 RCH202 12.0 107 24.0 215.0 5043 348
BHP672 RCH603 25.0 222 64.7 576.0 3922 270
Bearing
Separator
Attachment
BHP181 RWH101B100 7.0 75 10.3 91.7 6898 476
BHP282 RWH121 12.0 107 14.0 124.6 8702 600
BHP292 RCH202 12.0 107 24.2 215.0 5043 348
BHP682 RCH603 25.0 222 64.7 576.0 3922 270
Bearing
Cup Puller
Attachment
BHP180 RWH101B100 7.0 75 10.3 91.7 6898 476
BHP190 RWH121 7.0 75 14.0 124.6 5076 350
BHP280 RCH202 12.0 107 24.2 215.0 5043 348
BHP580 RCH603 25.0 222 64.7 576.0 3922 270
10.0 CAPACITIES
WARNING
Do not exceed the stated maximum hydraulic working pressure for the puller or accessory being used. Refer to the
information contained in Sections 10.1 and 10.2.
Overloading and catastrophic failure could occur if the stated maximum pressure is exceeded. Serious personal injury
or death may result.
Be aware that in some instances, the rated maximum capacity of the puller or accessory may be LESS than the rated
maximum capacity of the cylinder, and that hydraulic pressure must be reduced accordingly.
10.1 Maximum Rated Capacity Information-Pullers
10.2 Maximum Rated Capacity Information - Puller Accessories

14
11.0 PRODUCT DATA
Puller
Model
No.
Capacity A max. CØ B max. Ø B min. *
US
Tons KN in mm in mm in mm in mm lb Kg
LGH210 10.3 91.7 8.46 215 7.56 192 11.81 300 3.31 84 22.66 10.3
LGH214 14.0 124.6 10.24 260 7.32 186 14.96 380 4.92 125 31.24 14.2
LGH224 24.2 215.0 13.23 336 12.80 325 18.90 480 6.50 165 82.28 37.4
LGH253 52.5 467.3 16.06 408 18.62 473 25.98 660 9.06 230 243.76 110.8
LGH310 10.3 91.7 8.46 215 7.56 192 11.81 300 3.31 84 27.94 12.7
LGH314 14.0 124.6 10.24 260 7.32 186 14.96 380 4.92 125 40.04 18.2
LGH324 24.2 215.0 13.23 336 12.80 325 18.90 480 6.50 165 104.06 47.3
LGH364 64.7 576.0 16.06 408 18.62 473 25.98 660 9.06 230 306.90 139.5
* Approximate weight of assembled puller, including body, spindle, jaws and hydraulic cylinder.
11.1 Specifications and Dimensions - Puller Reach, Spread and Weights
11.2 Specifications and Dimensions - Cross Bearing Puller Reach and Weights
C
A
Ø B
C
B min
Cross Bearing
Puller Model No.
Master Puller
Set Model No.
B min. C
in mm in mm lb Kg
BHP112 LGHMS310 4.53 115 11.02 280 4.40 2
BHP172 LGHMS314 4.53 115 11.02 280 4.62 2.1
BHP272 LGHMS324 5.51 140 14.57 370 5.28 2.4
BHP672 LGHMS364 8.66 220 24.21 615 14.08 6.4
Note: See Section 11.7 for Legs specification.

15
V1, V2
W
X
X
11.3 Specifications and Dimensions - Bearing Cup Puller Attachment
Bearing
Cup Puller
Attachment
Model No.
Master
Puller Set
Model No.
S1 min. S2 max. T1 T2
U
in mm in mm in mm in mm lb Kg
BHP180 LGHMS310 1.57 40 5.71 145 5.31 135 9.29 236 3/4" UNF 16H 4.40 2
BHP190 LGHMS314 1.57 40 5.71 145 6.46 164 10.43 265 3/4" UNF 16H 4.62 2.1
BHP280 LGHMS324 1.57 40 5.71 145 6.46 164 10.43 265 1" UNC 8H 5.28 2.4
BHP580 LGHMS364 2.36 60 9.45 240 5.91 150 12.20 310 1-5/8" UNC 5.5H 14.08 6.4
S1, S2
T1
T2
U
11.4 Specifications and Dimensions - Bearing Separator Attachment
Bearing
Separator
Attachment
Model No.
Master
Puller Set
Model
No.
V1 min. V2 max. W
X
in mm in mm in mm lb Kg
BHP181 LGHMS310 0.39 10 4.33 110 4.33 110 5/8" UNF 18H 6.16 2.8
BHP282 LGHMS314 0.47 12 5.28 134 6.14 156 5/8" UNF 18H 12.54 5.7
BHP292 LGHMS324 0.51 13 8.27 210 7.17 182 5/8" UNF 18H 27.50 12.5
BHP682 LGHMS364 0.79 20 11.81 300 11.81 300 1-1/4" UNF 12H 95.70 43.5

16
11.5 Specifications and Dimensions - Spindle and Point Protector
Grip Puller
Model No.
L N Md D H
in mm in mm in mm in mm in mm
LGH210 / LGH310 17.44 443 9.45 240 3/4” UNF 16h 0.59 15 0.79 20 0.63 16
LGH214 / LGH314 19.41 493 10.04 255 3/4” UNF 16h 0.83 21 1.50 38 0.65 16.5
LGH224 / LGH324 27.24 692 16.81 427 1” UNC 8h 1.26 32 1.57 40 0.67 17
LGH253 / LGH364 35.71 907 19.69 500 1-5/8” UNC 5.5h 1.50 38 1.73 44 0.71 18
Puller
Model No.
D B C A L
in mm in mm in mm in mm in mm
LGH210 / LGH310 0.47 12 0.94 24 0.47 12 0.43 11 9.80 249
LGH214 / LGH314 0.55 14 1.18 30 0.63 16 0.67 17 11.81 300
LGH224 / LGH324 0.75 19 1.77 45 0.79 20 0.91 23 15.39 391
LGH253 / LGH364 1.02 26 2.17 55 1.34 34 1.38 35 19.37 492
11.6 Specifications and Dimensions - Puller Jaws
M
L
N
CB
D
L
A
L
R 2 R 1
d
D
H
11.7 Specifications and Dimensions - Legs
Master Puller Set
Model No. Leg Model No. LR1 R2
in mm
LGHMS310 &
LGHMS314
HP1136 8.23 209.0 3/4"-16 UNF 5/8"-18 UNF
HP1137 18.11 460.0 3/4"-16 UNF 5/8"-18 UNF
LGHMS324
HP2006 14.21 361.0 3/4"-16 UNF 5/8"-18 UNF
HP2007 21.30 541.0 3/4"-16 UNF 5/8"-18 UNF
HP2008 27.20 691.0 3/4"-16 UNF 5/8"-18 UNF
HP2012 9.29 236.0 3/4"-16 UNF 5/8"-18 UNF
LGHMS364 HP5007 32.30 820.5 1 1/4"-12 UNF-2A 1 1/4"-12 UNF-2A
HP5008 42.34 1075.5 1 1/4"-12 UNF-2A 1 1/4"-12 UNF-2A

Notes:

Notes:

Notes:

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