Enerpac NSC User manual

Document Number: L4504
Document Revision: D
Document Revision Date: 04-NOV-2021
Document Language: ENGLISH EN
Operation and Maintenance Manual
Nut Splitter Combination/ Hydraulic
Enerpac NSC/ NSH
To reduce the risk of injury, users must read and understand this document before use.

L4504_d 1
ABOUT US
Enerpac is a global market leader in high pressure
hydraulic tools, controlled force products, portable
machining, on-site services and solutions for precise
positioning of heavy loads. As a leading innovator with a
110-year legacy, Enerpac has helped move and maintain
some of the largest structures on earth. When safety and
precision matters, elite professionals in industries such as
aerospace, infrastructure, manufacturing, mining, oil & gas
and power generation rely on Enerpac for quality tools,
services and solutions. For additional information, visit
www.enerpac.com.
WARRANTY
Refer to the Enerpac Global Warranty document for terms and conditions of the product warranty. Such warranty
information can be found at www.enerpac.com.
NAMEPLATE
AVAILABLE LANGUAGES
L4504 is available in the following languages, visit www.enerpac.com for a copy.
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• Ga voor de overige talen naar www.enerpac.com.
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•如需其他语言，请前往www.enerpac.com.
Warning
Alert
Read Owner
Manual Symbol Pinch Point
Warning
Warning
Text
Compliance
Marking
Tool
Name
Tool
Number
Location of
Manufacture
Tool Serial
Number
Pressure
Limit
Application
Size
3D Barcode
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2L4504_d
Contents
1. SAFETY.......................................................................................................................................................... 3
1.1 SAFETY PRECAUTIONS ...................................................................................................................... 3
2. COMPLIANCE STATEMENT(S) .................................................................................................................... 5
2.1 CONFORMANCE TO NATIONAL AND INTERNATIONAL STANDARDS .......................................... 5
3. FEATURES & COMPONENTS ...................................................................................................................... 5
3.1 NSC FEATURE DIAGRAM .................................................................................................................... 5
3.2 NSH FEATURE DIAGRAM .................................................................................................................... 6
3.3 OPERATING CONDITIONS ................................................................................................................... 6
3.4 KIT CONTENTS ..................................................................................................................................... 6
4. TECHNICAL PRODUCT DATA...................................................................................................................... 8
4.1 NSC DIMENSIONS................................................................................................................................ 8
4.2 NSH DIMENSIONS................................................................................................................................ 8
5. OPERATION................................................................................................................................................... 9
5.1 TOOL SETUP ......................................................................................................................................... 9
5.2 TOOL SELECTION ................................................................................................................................ 9
5.3 NSC HYDRAULIC TOOL OPERATION ............................................................................................... 10
5.4 NSH HYDRAULIC TOOL OPERATION ............................................................................................... 11
5.5 HANDLE............................................................................................................................................... 11
5.6 SAFETY LANYARD.............................................................................................................................. 11
5.7 POSITIONING THE TOOL ................................................................................................................... 11
5.8 SUB-SEA USAGE ................................................................................................................................ 13
6. STORAGE .................................................................................................................................................... 13
7. MAINTENANCE........................................................................................................................................... 14
7.1 INSPECTION........................................................................................................................................ 14
7.2 CLEANING ........................................................................................................................................... 14
7.3 CUTTING TIP REPLACEMENT........................................................................................................... 14
7.4 MAINTENANCE ................................................................................................................................... 15
8. PARTS LIST ................................................................................................................................................. 16
9. TROUBLESHOOTING ................................................................................................................................. 41
9.1 NSH TROUBLESHOOTING................................................................................................................. 41
9.2 NSC TROUBLESHOOTING................................................................................................................. 42

L4504_d 3
1. Safety
1.1 Safety Precautions
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 NS tools or preparing them
for use. Always follow all safety precautions and
instructions, including those that are contained
within the procedures of this manual.
• Be sure the operator has completed safety induction
training, specific to the work surroundings. The
operator should be thoroughly familiar with the
controls and the proper use of the tool.
• Wear personal protective gear when operating
hydraulic equipment. Always wear eye protection.
Safety equipment such as dust mask, non-
skid safety shoes, hard hats, gloves, or hearing
protection (used as appropriate) will reduce
personal injuries. The protective clothing must not
interfere with safe operation of the tool or restrict
the ability to communicate with co-workers.
• Operating procedures will vary, depending on
the system arrangement. Always read, follow,
and completely understand all manufacturers’
instructions when operating pumps, valves and
all other devices used with the NS tools. Follow all
safety precautions contained in the manufacturer’s
manuals. Use only for intended purpose.
• To minimize risk of personal injury, keep hands
and feet away from the tool and workpiece during
operation.
• Do not overload equipment.
• Never apply pressure to a damaged hose, doing so
may cause it to rupture.
• Immediately replace worn or damaged parts.
Use only genuine Enerpac parts from approved
distributors or service centers. Enerpac parts have
been engineered and manufactured to be fit-for-
purpose.
• Do not handle pressurized hoses or couplings;
escaping oil under pressure can penetrate the
skin, causing serious injury. Seek medical attention
immediately if oil penetration is suspected.
• Only pressurize complete and fully connected
hydraulic systems. Do not pressurize systems that
contain unconnected couplers.
• Hydraulic circuit must be at zero pressure before
couplings are disconnected.
WARNING
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 that any questions or
concerns arise, contact Enerpac or a local Enerpac
distributor for clarification.
Save these instructions for future use.
If you have never been trained on high-pressure
hydraulic safety, consult your distributor or service
center for information about Enerpac Hydraulic Safety
Courses.
This manual follows a system of safety alert symbols,
signals, 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 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 DANGER, WARNING, CAUTION, and
NOTICE.
Indicates a hazardous situation that, if not
avoided, will result in death or serious personal injury.
Indicates a hazardous situation that, if not
avoided, could result in death or serious personal injury.
Indicates a hazardous situation that, if not
avoided, could result in minor or moderate personal
injury.
Indicates information considered
important, but not hazard related (e.g. messages related
to property damage). Please note that the Safety Alert
Symbol will not be used with the signal word.
DO: an illustration showing how the tool should
be used.
DON’T: an illustration showing an incorrect way
to use a tool.
NOTICE
DANGER
WARNING
CAUTION

4L4504_d
• Never leave the system unattended when under
pressure. When the system is under pressure DO
NOT STAND IN LINE with the direction of force of
the NS tools. This is a danger area. Always keep
this area clear of personnel when the system is
under pressure.
• Site pump on a secure, flat, level surface. Rope off
working area and place warning signs.
• Do not tamper with air pressure relief safety valve
on pump.
• Do not remove gauge covers when fitted.
• Check the date of the calibration certification. If the
recalibration date has passed, the gauge must be
recalibrated.
• If air supply is interrupted, turn off air stop valve
on pump.
• The system operating pressure must not exceed
the pressure rating of the lowest rated component
in the system.
• Maximum allowable pressure for the NS Tool-
Series is 10,000 psi [690 bar]. Do not exceed this
pressure setting.
• Use only a high-quality non-flammable solvent
for cleaning and degreasing parts during wrench
repair procedures. To reduce the risk of fire or
explosion, do not use flammable solvents.
• It is advised that a pressure gauge(s) is installed in
the system when using the NSH tools to monitor
operating pressure, to allow the operator to monitor
what is happening in the system.
• Care should be taken when using the lanyard to
avoid entanglement with body parts.
Failure to observe and comply with the following
precautions could result in minor or moderate
personal injury. Property damage could also occur.
• Ensure components are protected from external
sources of damage, such as excessive heat, flame,
moving machine parts, sharp edges, and corrosive
chemicals.
• Take care to avoid sharp bends and kinks in
hydraulic hoses. Bends and kinks can cause
severe back-up pressure and cause hose failure.
Protect hoses from dropped objects; a sharp
impact may cause internal damage to hose wire
strands. Protect hoses from crush risks, such
as heavy objects or vehicles; crush damage can
cause hose failure.
• Do not lift hydraulic equipment by the hoses
or couplers. Use only the designated carrying
handles.
• 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.
CAUTION
• Lubricate NS tools as directed in this manual prior
to operation. Use only approved lubricants of high
quality, following the lubricant manufacturer’s
instructions.
• Only use the designated anchor point for fixing the
lanyard. Do not attach the lanyard to the plastic
handle.
Failure to observe and comply with the following
precautions could result in property damage and/or
void the product warranty.
• Hydraulic equipment must only be serviced by a
qualified hydraulic technician. For repair service,
contact the Enerpac Authorized Service Centre in
your area.
• It is strongly recommended that operators always
use Enerpac pumps and hoses.
• Always use Enerpac replacement parts.
• Always follow the inspection and maintenance
instructions contained in this manual. Perform
inspection and maintenance after use, and at
regular intervals.
• Rope off working area and place warning signs.
• To help ensure proper operation and best
performance, use of Enerpac oil is strongly
recommended
• The vibration total value to which this tool is
subjected does not exceed 2.5 m/s2.
NOTICE

L4504_d 5
2.1 Conformance to National and International Standards
These tools conform with
the requirements for
CE and UKCA.
•NSC1927 •NSC2432 •NSH1927 •NSH2432
•NSH3646 •NSH5065 •NSH6575
3.1 NSC Feature Diagram
2
1
4
3
6
5
7
7
1. Cutting Head and Tip
2. Body Handle
3. Anchor Point
4. Integrated Pump
5. Advance/ Retract Button
6. Pump Handle
7. Pump Air-Vents
2. Compliance Statement(s)
Enerpac declares that the product(s) have been tested
and conforms to applicable standards and the product(s)
are compatible to all EU and UK Requirements.
Copies of the EU Declaration as well as the UK Self-
Declaration are enclosed with each shipment.
3. Features & Components

6L4504_d
3.2 NSH Feature Diagram
2
1
4
3
1. Cutting Head and Tip
2. Body Handle
3. Anchor Point
4. Hydraulic Coupling
3.3 Operating Conditions
Minimum Cutting Tip Contact Temperature: -20°C
Maximum Cutting Tip Contact Temperature: 70°C
3.4 Kit Contents
3.4.1 NSC1927 Kit Contents
1 x NSC1927 Nut Splitter
1 x NSC1927 Spare Cutting Tip
1 x Safety Lanyard
1 x Operation and Maintenance Manual
1 x Carry Case
Carry Case Dimensions: 580mm x 350mm x 180mm
[22.8”x 13.8”x 7.1”]
Tool only Weight: 5.8kg [12.8lb]
Gross Kit Weight: 9.0kg [20.0lb]
3.4.2 NSC2432 Kit Contents
1 x NSC2432 Nut Splitter
1 x NSC2432 Spare Cutting Tip
1 x Safety Lanyard
1 x Operation and Maintenance Manual
1 x Carry Case
Carry Case Dimensions: 580mm x 350mm x 180mm
[22.8”x 13.8”x 7.1”]
Tool only Weight: 6.3kg [13.9lb]
Gross Kit Weight: 9.4kg [20.7lb]

L4504_d 7
3.4.3 NSH1927 Kit Contents
1 x NSH1927 Nut Splitter
1 x NSH1927 Spare Cutting Tip
1 x Safety Lanyard
1 x Operation and Maintenance Manual
1 x Carry Case
Carry Case Dimensions: 580mm x 350mm x 180mm
[22.8” x 13.8” x 7.1”]
Tool only Weight: 3.5kg [7.7lb]
Gross Kit Weight: 6.8kg [15.0lb]
3.4.4 NSH2432 Kit Contents
1 x NSH2432 Nut Splitter
1 x NSH2432 Spare Cutting Tip
1 x Safety Lanyard
1 x Operation and Maintenance Manual
1 x Carry Case
Carry Case Dimensions: 580mm x 350mm x 180mm
[22.8” x 13.8” x 7.1”]
Tool only Weight: 4.0kg [8.8lb]
Gross Kit Weight: 7.1kg [16.7lb]5.5
3.4.5 NSH3646 Kit Contents
1 x NSH3646 Nut Splitter
1 x NSH3646 Spare Cutting Tip
1 x Safety Lanyard
1 x Operation and Maintenance Manual
1 x Carry Case
Carry Case Dimensions: 580mm x 350mm x 180mm
[22.8” x 13.8” x 7.1”]
Tool only Weight: 6.9kg [15.2lb]
Gross Kit Weight: 10.2kg [22.5lb]
3.4.6 NSH5065 Kit Contents
1 x NSH5065 Nut Splitter
1 x NSH5065 Spare Cutting Tip
1 x Safety Lanyard
1 x Operation and Maintenance Manual
1 x Carry Case
Carry Case Dimensions: 460mm x 300mm x 280mm
[18.1” x 11.8” x 11.0”]
Tool only Weight: 10.9kg [24lb]
Gross Kit Weight: 17.7kg [39lb]
3.4.7 NSH6575 Kit Contents
1 x NSH6575 Nut Splitter
1 x NSH6575 Spare Cutting Tip
1 x Safety Lanyard
1 x Operation and Maintenance Manual
1 x Carry Case
Carry Case Dimensions: 460mm x 270mm x 285mm
[18.1” x 10.6” x 11.2”]
Tool only Weight: 24.5kg [54.0lb]
Gross Kit Weight: 31.0kg [68.4lb]

8L4504_d
4. Technical Product Data
4.1 NSC Dimensions
Model
Number
Dimensions Tool Weight
(kg)
Kit Weight
(kg)A B C
NSC1927 353 mm
[13.9"]
81 mm
[3.2"]
152 mm
[6.0"]
5.8 kg
[12.8 lb]
9.0 kg
[20.0 lb]
NSC2432 370 mm
[14.6"]
81 mm
[3.2"]
152 mm
[6.0"]
6.3 kg
[13.9 lb]
9.4 kg
[20.7 lb]
4.2 NSH Dimensions
Model
Number
Dimensions Tool Weight
(kg)
Kit Weight
(kg)A B C D
NSH1927 258 mm
[10.1"]
213 mm
[8.4"]
152 mm
[6.0"]
81 mm
[3.2"]
3.5 kg
[7.7 lb]
6.8 kg
[15.0 lb]
NSH2432 265 mm
[10.4"]
220 mm
[8.7"]
152 mm
[6.0"]
81 mm
[3.2"]
4.0 kg
[8.8 lb]
7.1 kg
[16.7 lb]
NSH3646 290 mm
[11.4"]
239 mm
[9.4"]
169 mm
[6.7"]
93 mm
[3.7"]
6.9 kg
[15.2 lb]
10.2 kg
[22.5 lb]
NSH5065 377 mm
[14.84"]
322 mm
[12.68"]
210 mm
[8.27"]
185 mm
[7.28"]
10.9 kg
[24 lb]
17.7 kg
[39 lb]
NSH6575 396 mm
[15.6"]
345 mm
[13.6"]
220 mm
[8.7"]
202 mm
[7.9"]
24.5 kg
[54.0 lb]
31.0 kg
[68.4 lb]
B
A
C
A
D
B
C

L4504_d 9
5. Operation
NS TOOLS UN HEAVY HEX
STUD SIZE
UNC HEAVY NUT
A/F SIZE
NSC1927 1/2", 5/8"0.75"to 1.06"
NSC2432 3/4", 7/8"0.94"to 1.26"
NSH1927 1/2", 5/8" 0.75"to 1.06"
NSH2432 3/4", 7/8" 0.94"to 1.26"
NSH3646 7/8", 1", 1-1/8" 1.42" to 1.81"
NSH5065 1-1/4", 1-3/8",
1-1/2", 1-5/8" 2" to 2.56"
NSH6575 1-5/8", 1-3/4",
1-7/8" 2.56" to 2.95"
NOTE: Maximum allowable hardness to split is ASTM
A194 Gr 2H. Not to be used on square nuts or stainless
steel.
If the specification of the nut is unknown then a vernier
calliper or measure tape should be used to determine
the Across-Flats (A/F) size of the nut to be split and the
correct tool.
Figure 1:
A/F
5.1 Tool Setup
Enerpac Nut Splitter Tools are suited to fit a range of
nut sizes and grades and the right tool should be
selected prior to commencing work detailed in Section
5. Operation.
A thick grease should be applied to the
Cutting Tip before every cut. This will ease the splitting
operation, prolong the life of the Cutting Tip and limit the
risk of sparking and debris projectiles.
5.2 Tool Selection
It is important that the correct tool is
selected for each nut and the correct Cutting Tip is used
for each tool. Each tool in the Nut Splitter range comes
with the appropriate Cutting Tips for that tool. Please
refer to the table below to choose the correct tool for
your application.
NS TOOLS METRIC STUD
SIZE
METRIC NUT A/F
SIZE
NSC1927 M12, M16, M18 19mm to 27mm
NSC2432 M16, M20, M22 24mm to 32mm
NSH1927 M12, M16, M18 19mm to 27mm
NSH2432 M16, M20, M22 24mm to 32mm
NSH3646 M24, M27, M30 36mm to 46mm
NSH5065 M33, M36, M39,
M42 50mm to 65mm
NSH6575 M42, M45, M48 65 mm to 75mm
CAUTION
CAUTION

10 L4504_d
5.3 NSC Hydraulic Tool
Operation
Prior to operation, ensure the air-vent in the integrated
pump is not obstructed. Any obstruction in the air-vent
can cause a vacuum in the system which can limit the
cylinder’s travel.
The NSC1927 and NSC2432 Nut Splitter use an
integrated hydraulic pump to drive the cylinder and
advance the Cutting Tip to split the nut. The hydraulic
pressure is applied using the integrated pump, enabling
accurate control of the force applied.
The integrated pump has a control lever which allows
the user to select advance (+) or retract (-).
Figure 2:
Actuating NSC Tools
When advance (+) is selected, pumping the handle will
advance the piston with the Cutting Tip and split the
nut.
Figure 3:
Retracting NSC Tools
Selecting Retract (-) will de-pressurise the cylinder and
cause it to retract under the force of its internal spring.
The handle doesn’t need to be pumped to retract the
cylinder.
Using NSC Tools
Position the tool as per Section 5.7.
When the pump is operated the piston and the Cutting
Tip will advance. Ensure the tool is flat against the flange
and the Cutting Tip perpendicular to the nut throughout
the operation. Slowly actuate the Nut Splitter to advance
the Cutting Tip against a flat of the nut and increase the
pressure until the nut splits.
Releasing the pump will de-pressurise the cylinder and
cause it to retract under the force of its internal spring.
It is likely that the nut will require a second split to fully
remove the nut from the stud. Ideally a second split
should be carried out at 180° to the first cut, splitting
the nut in half to enable removal.
After the nut has been split, always check the Cutting Tip
for damage and replace if required before positioning
the tool on another nut.
Split nuts often have sharp edges and
should be handled with great care.
CAUTION

L4504_d 11
5.4 NSH Hydraulic Tool
Operation
NSH range of Nut Splitters require an external hydraulic
pump to drive the cylinder and advance the Cutting Tip
to split the nut.
Maximum allowable pressure for the
NSH Tools is 10,000 psi [690 bar]. Do not exceed this
pressure setting.
Pump hydraulic system should include a
PRV (relief valve) included in the hydraulic circuit.
Consult the manufacturer’s Instruction
Manual for the hydraulic pump operation.
Using NSH Tools
Position the tool as per Section 5.7
When the pump is operated the piston and the Cutting
Tip will advance. Ensure the tool is flat against the flange
and the Cutting Tip perpendicular to the nut throughout
the operation. Slowly actuate the Nut Splitter to advance
the Cutting Tip against a flat of the nut and increase the
pressure until the nut splits.
• Air or electric powered pumps only: Once the
blade has stopped cutting at 1000 psi [69 bar], the
pressure should be gradually increased using the
pressure regulator on the pump. Allow adequate
time for the blade to cut before increasing pressure.
• If pressure is increased too quickly, blade damage
may result. Excessive pressure may also cause the
nut splitter’s internal relief valve to open, resulting
in oil leakage from the oil bleed hole located on the
underside of the blade holder.
• On larger nuts, it may be helpful to periodically
retract and re-lubricate the blade. This will reduce
friction and increase blade efficiency.
Releasing the pump will de-pressurise the cylinder and
cause it to retract under the force of its internal spring.
It is likely that the nut will require a second split to fully
remove the nut from the stud. Ideally a second split
should be carried out at 180° to the first cut, splitting
the nut in half to enable removal.
After the nut has been split, always check the Cutting Tip
for damage and replace if required before positioning
the tool on another nut.
Split nuts often have sharp edges and
should be handled with great care.
5.5 Handle
The handle can be swivelled around the central axis of
the tool, to improve access to the nut and allow the tool
to be easily held in the vertical or horizontal orientation.
CAUTION
CAUTION
NOTICE
NOTICE
CAUTION
5.6 Safety Lanyard
NS tools are supplied with a secure anchor point and
a safety lanyard. The safety lanyard should be used to
minimise the risks associated with the tool dropping.
Attach one end of the safety lanyard to the tool using the
supplied shackle. The other end of the safety lanyard
should be fixed to a secure point close to the work-site
using an appropriate shackle.
Avoid using the safety lanyard as a means for picking up
or carrying the tool. Do not fix the safety lanyard to the
plastic handle.
The anchor point and safety lanyard have been
engineered to safely sustain a drop over the full safety
lanyard length. It is recommended that all parts are
inspected following a drop incident, as damage may
compromise the safety of the tool.
Only use the designated anchor point
for fixing the safety lanyard. Do not attach the safety
lanyard to the plastic handle.
Care should be taken when using the
safety lanyard to avoid entanglement with body parts.
5.7 Positioning The Tool
Prior to splitting the nut, an assessment should be carried
out to determine the most appropriate positioning of the
tool around the nut.
Figure 4:
Place the tool on the nut with the flat surface of the
cutting head flat against one of the nut flats and the
Cutting Tip centered. Ensure the bottom face of the
cutting head sits flat on the same surface that the nut
is seated.
CAUTION
WARNING

12 L4504_d
Figure 5:
Figure 6:
Figure 7:
Figure 8:
It is recommended that suitable hearing
protection, i.e. ear defenders or ear plugs are worn.
It is recommended that a face shield or
suitable eye protection, i.e. safety glasses or goggles
are worn.
CAUTION
CAUTION

L4504_d 13
5.8 Sub-Sea Usage
5.8.1 Using Integrated Pump on THE NSC
Subsea
NSC tools are actuated by means of single-acting
spring-return hydraulic cylinder and can be used sub-
sea providing the following actions are taken:
• The pump release valve is fully opened and remains
open until the tool has descended to the working
depth. This will allow the pressure to equalise.
• The tool is actuated via the hand-pump by a diver.
• Upon completion of works the release valve is
left in the fully-open position until the tool has
ascended to the surface.
• The tool and pump are stripped-down, cleaned
and lubricated immediately to minimise corrosion.
5.8.2 Using External Pump on THE NSH
Subsea
NSH tools require a hydraulic hand pump that is fitted
with a sealed-bladder type reservoir system to allows
for sub-sea operation.
NSH tools are actuated by means of single-acting
spring-return hydraulic cylinder and can be used sub-
sea providing the following actions are taken:
1. The gauges and manifolds are removed from the
hand-pump and the coupler is fitted directly to the
pump outlet.
2. The tool is connected to the pump whilst still top-
side.
3. The pump release valve is fully opened and remains
open until the tool has descended to the working
depth. This will allow the pressure to equalise.
4. The tool is actuated via the hand pump by a diver.
5. Upon completion of works the release valve is
left in the fully-open position until the tool has
ascended to the surface.
6. The tool and pump are stripped-down, cleaned
and lubricated immediately to minimise corrosion.
Please note that the NSH tools cannot be
operated from top-side by use of a down-line. The return
springs in the hydraulic cylinders do not have sufficient
force to retract the piston if used with a down-line from
a top-side pump, therefore the standard hydraulic tools
will not function correctly and may jam in place if used
in this configuration.
CAUTION
6. Storage
NS tools should be stored in a cool dry place. Tools should always be cleaned, serviced and lubricated prior to
storage. Ensure that tools are stored in their designated packing cases.

14 L4504_d
7. Maintenance
Figure 9:
Ensure the tip retention screw is screwed
tightly into in the piston and the hex key removed before
actuating the tool.
Figure 10:
A thick grease should be applied to the Cutting Tip
before every cut. This will ease the splitting operation,
prolong the life of the Cutting Tip and limit the risk of
sparking and debris projectiles.
Cutting Tip
Tip Retention Screw
Small Hex Key
CAUTION
Large Hex Key
Alignment Screw
7.1 Inspection
A thorough inspection should be carried out prior
to usage, storage or transportation to ensure the
completeness and condition of the tool.
Inspection should include:
• Visual inspection of the outer parts of the tool,
checking for obvious damage, degradation or
missing parts,
• Visual inspection of the Cutting-Tip (this may
require tool actuation).
Cleaning and servicing should be undertaken as required
prior to the tool being used, stored or transported.
7.2 Cleaning
To lightly clean the tool, wipe gently with a damp cloth.
If more thorough cleaning is required (for example
following immersion in water) carry out the following
cleaning procedure:
• Strip the tool down, observing the exploded
diagrams shown in the Section 8.0 Parts List,
• Clean the components using detergent, following
the manufacturer’s guidelines,
• Rinse the components to remove traces of
detergent,
• Dry the components thoroughly.
Inspect, service and lubricate the tool immediately after
the cleaning process.
7.3 Cutting Tip Replacement
Ensure the correct Cutting Tip is fitted to the tool and
has been checked for damage. Some minor blunting is
acceptable, but cracked or chipped Cutting Tips should
be replaced.
The Cutting Tip is retained in the piston by the tip
retention screw. Unscrew the tip retention screw with
a hex-key and pull the Cutting Tip out to replace. Do
not apply excessive force when inserting the Cutting Tip
into the tool. If the Cutting Tip does not come out easily,
slightly extend the piston to gain better access. When
replacing the Cutting Tip, the tip retention screw and
alignment screw should also be replaced every time.

L4504_d 15
7.4 Maintenance
Replace missing, worn or damaged parts. Use only
genuine Enerpac parts from approved distributors or
service centres. Enerpac parts have been engineered
and manufactured to be fit-for-purpose.
Do not apply excessive force when inserting the Cutting
Tips into the tool. Always replace the tip retention screw
and alignment screw when replacing the Cutting Tip.
The alignment screw in the side of the cutting head
sits in the slot of the piston and keeps the Cutting Tip
aligned. This screw should not be fully tightened; back
off the alignment screw by 1/4 turn after insertion.
Figure 11:
If topping up or replacing hydraulic oil as part of a
service, only use genuine Enerpac Oil.
A thick grease should be applied to the Cutting Tip
before every cut. This will ease the splitting operation,
prolong the life of the Cutting Tip and limit the risk of
sparking and debris projectiles.

16 L4504_d
8.1 NCS1927 Nut Splitter Combination Head Exploded Views
images/ text
7

1

3

16
✤
11
✤
13
✤
2
12
✤
20

22

21

20

8

10
✤
15
✤
14
✤
4
6
9

5
17
✤
23

19
✤
18
✤
24
Note:
Items marked are not supplied separately.
Items marked supplied in NSC1927 Cutting Tip Service Kit NSH1927CTK.
Items marked supplied in NSC1927 Seal Kit NSH1927SK.
3
13◆
12◆18◆15◆
92
14◆17◆
25
4
5
6
21
20◆
19◆
22
23
24
22
26
1
8
16◆
7
8. Parts List

L4504_d 17
8.2 NSC1927 Nut Splitter Combination Head Table of Parts
Item Description Qty Part Numbers
1 Cutting Head 1 
2 NSC1927/ NSC2432 Piston 1 DM0875051
3 NSC1927 Body Sticker Wrap 1 
4 Decal Integrated Pump Wrap 1 DM0590026
5 Pump Handle Grip 1 DM306502-01
6 Integrated Pump 1 1010100-01
7 NS1927 Cutting Tip 1

8 Alignment Screw 1
9 M4x6mm Grub Screw 1
10 3.0 mm Hex Key (not shown) 1
11 2.0 mm Hex Key (not shown) 1
12 M20 Flat Washer 1
◆
13 WMU Plain Bushing 1
14 Piston Bearing Strip 1
15 Compression Spring 1
16 Cylinder Vent Plug 1
17 Piston Lip Seal 1
18 M24 Flat Washer 1
19 O-Ring 1
20 Back-Up Ring 1
21 Cylinder Nose Adaptor 1 DM0855038
22 Spiral Retaining Ring 2 DM1364049
23 Anchor Point 1 DM0578558
24 Handle 1 DM0575070
25 Handle Sticker 1 DM0876026
26 Lanyard 1 DM0899217
NSC1927 Cutting Tip Service Kit NSH1927CTK ◆NSC1927 Seal Kit NSH1927SK
Not supplied separately

18 L4504_d
8.3 NSC2432 Nut Splitter Combination Head Exploded Views
7
 
1

13
✤
3

10
✤
15
✤
2
11
✤
20

22

21

19
8
 
16
✤
14
✤
23

6
9
 
4
5
17
✤
12
✤
19
✤
18
✤
24
Note:
Items marked are not supplied separately.
Items marked supplied in NSC2432 Cutting Tip Service Kit NSH2432CTK.
Items marked supplied in NSC2432 Seal Kit NSH1927SK.
3
1
18◆
9
13◆
16◆
25
21◆45
6
21
23
20◆
19◆
24
22
26
2
14◆
17◆
12◆
8
15◆
7