MasterCraft 058-7732-0 User manual

INSTRUCTION MANUAL
AIR-POWERED SHEAR
058-7732-0
OILDAILY

TABLE OF CONTENTS
2
AIR-POWERED SHEAR 058-7732-0
QUICK START GUIDE
TECHNICAL SPECIFICATIONS 3
SAFETY GUIDELINES 4–9
KEY PARTS DIAGRAM 10
IMPORTANT INFORMATION 11–13
OPERATING INSTRUCTIONS 14–15
MAINTENANCE 16–17
TROUBLESHOOTING 18–19
EXPLODED VIEW 20
PARTS LIST 21
WARRANTY 22–23

SAFETY GUIDELINES
4
AIR-POWERED SHEAR 058-7732-0
This manual contains information that relates to PROTECTING PERSONAL SAFETY and PREVENTING
EQUIPMENT PROBLEMS. It is very important to read this manual carefully and understand it
thoroughly before using the product. The symbols listed below are used to indicate this information.
Note- The word “Note” is used to inform the
reader of something he/she needs to know about
the tool.
PERSONAL SAFETY
These precautions are intended for the personal safety of the user and others working with the user.
Please take time to read and understand them.
DANGER!
Potential hazard that will result in serious
injury or loss of life.
WARNING!
Potential hazard that could result in
serious injury or loss of life.
CAUTION!
Potential hazard that may result in
moderate injury or damage to equipment.

SAFETY GUIDELINES
5
AIR-POWERED SHEAR 058-7732-0
SAFETY GUIDELINES
DANGER!
Potential hazard that will result in serious injury or loss of life.
•Keep children away from the work area. Do not allow children to handle
power tools.
•Do not use this tool in the presence of flammable liquids or gases. Sparks
that are created during use may ignite gases.
•Do not point the tool towards yourself or other people, even if the tool has
stopped. Keep hands, feet, and all other parts of the body clear from work
area.
•Always ensure that the workpiece is firmly secured leaving both hands free
to control the tool.
•Always ensure that the tool has stopped before putting it down after use, in
the interest of safety and to prevent possible damage to the tool/user.
•Always wear an appropriate face mask or respiratory equipment while
cutting.
•Do not use oxygen or any other combustible or bottled
gas to power air-powered tools. Failure to observe this
warning can cause explosion and serious personal injury
or death. Use only the compressed air to power air-
powered tools. Use a minimum of 25'(7.6 m) of hose to
connect the tool to the compressor. Failure to comply will
result in serious injury or loss of life.
•Risk of electric shock: Do not expose a compressor to rain. Store it indoors.
Disconnect the compressor from the power source before servicing.
Compressor must be grounded. Do not use grounding adaptors.
Oxygen
Hydrogen
Explosive
Combustible
MC-OM-02

SAFETY GUIDELINES
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AIR-POWERED SHEAR 058-7732-0
•Risk of personal injury: Do not direct compressed air from the air hose
toward the user or other personnel.
•Risk of inhallation: Never directly inhale the air produced by the compressor.
•Risk of bursting: Do not adjust the pressure switch or safety valve for any
reason. They have been preset at the factory for this compressor’s maximum
pressure. Tampering with the pressure switch or the safety valve may cause
personal injury or property damage.
•Risk of burns: The pump and the manifold generate high temperatures. In
order to avoid burns or other injuries, do not touch the pump, the manifold,
or the transfer tube while the compressor is running. Allow the parts to cool
down before handling or servicing. Keep children away from the compressor
at all times.
•Risk of bursting: Make sure the regulator is adjusted so
that the compressor outlet pressure is set lower than the
maximum operating pressure of the tool. Before starting
the compressor, pull the ring on the safety valve to make
sure the valve moves freely. Drain water from tank after
each use. Do not weld or repair tank. Relieve all pressure
in the hose before removing or attaching accessories. MC-OM-22

SAFETY GUIDELINES
7
AIR-POWERED SHEAR 058-7732-0
WARNING!
Potential hazard that could result in serious injury or loss of life.
•Do not allow unskilled or untrained individuals to operate the Air-powered
Shear.
•Always ensure that the accessories such as knives, etc., are specially
designed/rated for use with the tool. Also ensure they are secured and
correctly fastened before connecting the tool to the air supply.
•Use only lightweight coil type air hoses to connect the tool to compressor
coupling. Do not fit quick change couplings onto the machine as can cause
the coupling to fall.
•Locate the compressor in a well-ventilated area for cooling, at a minimum of
12" (31 cm) away from the nearest wall.
•Protect the air hose and the power cord from damage and puncture. Inspect
them for weak or worn spots every week, and replace them if necessary.
•Always wear hearing protection when using the air compressor. Failure to do
so may result in hearing loss.
•Do not carry the compressor while it is running.
•Do not operate the compressor if it is not in a stable position.
•Do not operate the compressor on a rooftop or in an elevated position that
could allow the unit to fall or be tipped over.
•Always replace a damaged gauge before operating the unit again.

SAFETY GUIDELINES
8
AIR-POWERED SHEAR 058-7732-0
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
•Always ensure that the tool has stopped before connecting the tool to the air
supply.
•Do not wear watches, rings, bracelets, or loose clothing when using any air
tool.
•Maintain proper footing at all times in order to ensure correct balance.
•Do not overload the tool. Allow the tool to operate at its optimum speed for
maximum efficiency.
• Do not use a tool that is leaking air, with missing or damaged parts, or that
requires repairs. Verify that all screws are securely tightened.
• For optimal safety and tool performance, inspect the tool daily in order to
ensure free movement of the trigger, safety mechanisms, and springs.
•Always keep your air tool clean and lubricated. Daily lubrication is essential
to avoid internal corrosion and possible failures.
•Keep the work area clean. A cluttered or dirty workbench may lead to an
accident. Floors should be kept clear.
•Use the tool only in a well-ventilated area.
•Handling and storage of oil: Use with adequate ventilation. Avoid contact of
oil with eyes, skin, and clothing. Avoid breathing spray or mist. Store in a
tightly closed container in a cool, dry, well-ventilated area free from
incompatible substances.
•Do not use the tool near or below freezing temperature, as doing so may
cause tool failure.
•Do not store the tool in freezing temperatures to prevent ice formation on
the operating valves of the tool, as doing so may cause tool failure.

SAFETY GUIDELINES
9
AIR-POWERED SHEAR 058-7732-0
Note: Recycle unwanted materials rather than disposing of them as waste. Sort the tools, hoses, and
packaging in specific categories and take to the local recycling centre or dispose of them in an
environmentally safe way.
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
•Disconnect the tool from the air supply and turn off the
compressor before changing knives or before performing any
maintenance, or changing accessories, when the tool is not
in use, when it is being handed to another person, and when
it is left unattended. Failure to comply could result in
moderate injury or damage to equipment.
•Use safety goggles and ear protection:
Wear safety glasses with side shields when operating the
tool/compressor and verify that others in the work area are
also wearing safety glass. Safety glasses must conform to
American National Standards Institute (ANSI Z87.1)
requirements and must provide protection from flying
particles from the front and the sides.
Air-powered tools are loud and the sound can cause hearing
damage. Always wear ear protection to help prevent hearing
damage and loss. Failure to comply could result in moderate
injury.
MC-587732-02
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MC-OM-01

KEY PARTS DIAGRAM
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AIR-POWERED SHEAR 058-7732-0
No. Description No. Description
1 Knives 3 Handle
2 Trigger 4 Air inlet plug
MC-587732-01
4
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1
2
3

IMPORTANT INFORMATION
11
AIR-POWERED SHEAR 058-7732-0
General usage description
The Mastercraft®Air-powered Shear features a reversible, keyless housing made of durable,
lightweight aluminum, a trigger for precise and variable speed control and an air strainer. The tool
generates less noise, and is ergonomic to use. The tool is used for cutting material such as plastics
and all types of aluminum, tin and steel.
Compatible compressor and air tool
GUIDELINES FOR PROPER USAGE AND OPERATION
Always ensure the use of appropriately matched air tools and compressors. The compressor should
be able to supply a minimal air delivery of 4 SCFM @ 90 PSI to ensure the compressor can run
continuously with the Mastercraft Air-powered shear. Using tools or a combination of tools that
together or separately require more volume of air than the volume that the air compressor can
deliver will reduce performance and could void the compressor or tool guarantee/warranty.
Air system
• Always use clean, dry, regulated, compressed air at a pressure of 90 PSI and specific flow
rate
(see section “Technical Specifications”) .
• Ensure that the trigger is not pressed before connecting to the tool to the air supply.
Air Compressor
Size & Power 2 HP 2 1/2 HP 3 HP+
5 -6 Gallons Light duty and
intermittent use
Light duty and
intermittent use
Medium duty and
intermittent use
8 -11 Gallons Light duty and
intermittent use
Medium duty and
intermittent use
Heavy duty and
continuous use
15+ Gallons Medium duty and
intermittent use
Heavy duty and
continuous use
Heavy duty and
continuous use

IMPORTANT INFORMATION
12
AIR-POWERED SHEAR 058-7732-0
• It is recommended that an automatic in-line filter-regulator-lubricator be used and located as
close to the tool as possible.
• If a filter-regulator-lubricator is not installed, place up to 6 drops of pneumatic tool oil directly
through the air inlet plug in the tool housing at least once a day or after 2 hours of work for
lubrication of the tool.
• If a filter-regulator-lubricator is installed, keep the air filter clean. A dirty filter will reduce the
air pressure to the tool, which will cause a reduction in power, efficiency, and general
performance.
WARNING!
Potential hazard that could result in serious injury or loss of life.
• Ensure that air supply is clean and has a regulated pressure of 90 PSI. The use
of high pressure air or unclean air may cause excessive wear, which will
shorten the tool life. Failure to comply could lead to serious injury or loss of
life.
• Keep hands and other parts of the body away from the work areas when
connecting the tool to the air supply. Failure to comply could lead to serious
injury or loss of life.
• Do not use the tool if it is not in proper working order.
• Do not use oxygen or any other combustible or bottled gas to power this tool.
• Do not use this tool in the presence of any flammable liquids or gases.
• Keep hose away from heat, oil, and sharp edges. Check hose for wear and
tear, and ensure that all connections are secure. Failure to comply could lead to
serious injury or loss of life.
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
• Verify that all connections in the air supply system are sealed in order to
prevent air leakage. Failure to comply may result in moderate injury or damage
to equipment

IMPORTANT INFORMATION
13
AIR-POWERED SHEAR 058-7732-0
AIR TOOLS
Read this instruction manual thoroughly or have tool operators read thoroughly before using the tool.
• Read all safety guidelines
(see section “Safety guidelines”) at the beginning of this manual.
• Always inspect the air tool prior to each use to:
– Ensure proper use of power source.
– Determine whether the tool is in proper working order.
• Drain the compressor tank daily. Water in the air supply line will damage the tool.
• Clean the air inlet and the filter weekly.
• Line pressure should be increased to compensate for unusually long air hoses. The hose
diameter should be 3/8". The fittings must have the same inside dimensions.
No. Description No. Description
1 Mastercraft®Air-powered Shear 5 Filter
2 Air hose 6 Cut-off valve
3 Lubricator 7 Air compressor
4 Regulator (0 to 8.5 bar)
MC-587732-07
35
1
4
6
7
2
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OPERATING INSTRUCTIONS
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AIR-POWERED SHEAR 058-7732-0
Operation
1. Plug in compressor, turn it on set the
pressure regulator to 90 PSI, attach one
end of the air hose to the compressor
and the other end of the air hose (1) to
the Air-powered Shear (2). Use
plumber’s tape to prevent air leaks
(Fig A) .
2. Insert the material (1) to be cut between
the knives of the tool (2)
(Fig B) .
3. Move the tool in desired direction while
pressing the trigger (1) to cut the
material
(Fig C) .
WARNING!
Potential hazard that could result in serious injury or loss of life.
• Read all instructions in this manual carefully and understand them thoroughly
before using the Air-powered Shear. Failure to comply could lead to serious
injury or loss of life.
MC-587732-02
1
2
fig A
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1
2
fig B
MC-587732-03
MC-587732-04
fig C
2
1
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OPERATING INSTRUCTIONS
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AIR-POWERED SHEAR 058-7732-0
Changing of knives
• Disconnect the tool from the air supply.
• Remove the three Allen bolts (1) using
the Allen key provided
(Fig D) .
• Remove the old knives (2) and replace
with new knives
(Fig D) .
• Replace the three Allen bolts (1) and
tighten them properly
(Fig D) .
MC-587732-05
fig D
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1
2
WARNING!
Potential hazard that could result in serious injury or loss of life.
• Do not use excessive force on the tool for shearing. Failure to comply could
lead to serious injury or loss of life.
• Ensure that the Allen bolts are tightened properly before operating the tool.
Failure to comply could lead to serious injury or loss of life.

MAINTENANCE
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AIR-POWERED SHEAR 058-7732-0
Storage
If it is necessary to store the tool for an extended period of time, apply a generous amount of
lubrication before storing. The tool should be allowed to run for approximately 30 seconds after
lubricating in order to ensure that the lubrication is uniformly distributed throughout the tool.
Maintenance
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
• The tool should be stored in a clean and dry environment. Failure to comply
may result in moderate injury or damage to equipment.
MAINTENANCE
REQUIRED DESCRIPTION
TOOLS OR
MATERIALS
REQUIRED
MAXIMUM SERVICE INTERVAL
Each use or
every 2 hrs. Monthly As needed
General inspection -
free movement
Trigger, spring,
safety mechanism None X
In-depth inspection Worn or broken
parts X X
Replace worn or
broken parts X
Lubrication See below pneumatic tool
oil X
•Lubrication: If the Air-powered Shear and the
compressor are not equipped with an in-line
lubrication system, place up to 6 drops of
pneumatic tool oil into the air inlet before each
work day or after every 2 hours of continuous use,
based on the characteristics of the workpiece.
MC-587732-12
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MAINTENANCE
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AIR-POWERED SHEAR 058-7732-0
•Air-operated tools must be inspected periodically, and worn or broken parts must be replaced
in order to keep tools operating safely and efficiently.
• Inspect and replace worn or damaged O-rings, seals, etc. Tighten all screws and caps
frequently in order to help prevent personal injury.
• Inspect the trigger, the spring, and the safety mechanism for free movement on a regular
basis in order to ensure that the safety system is fully functional.
• Disconnect the tool from the air supply when it is not in use.
• When temperatures are below freezing, keep tools as warm as possible using any safe,
convenient method.
• Check the air supply for correct size and type of hose connectors. Ensure that there is no
additional drain on the air line and no moisture or restriction in the air pipe to avoid loss of
power or erratic action.
• Clean the air strainer located in the area of the air inlet plug to avoid deposition of grit or gum
deposits which may lead to loss of power or erratic action and may also reduce the
performance of the tool.
WARNING!
Potential hazard that could result in serious injury or loss of life.
•Disconnect the tool from the air supply before changing accessories, servicing,
or performing maintenance.
• Only use the tool after replacing or repairing the damaged parts or accessories.
• Use only recommended and properly rated replacement parts and knives.
Failure to comply will lead to serious injury or loss of life.
• Repairs must be performed by a qualified service technician.
• Never use excessively worn knives or any damaged parts.

TROUBLESHOOTING
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AIR-POWERED SHEAR 058-7732-0
Troubleshooting
The following chart lists common issues and solutions. Please read it carefully and follow all
instructions closely.
WARNING!
Potential hazard that could result in serious injury or loss of life.
• If any of the following symptoms appears while the tool is in use, turn it off and
disconnect it from the air supply immediately. Failure to heed this warning will
result in serious personal injury.
• Disconnect the tool from the air supply before making any adjustments.
• Repairs must be performed by a qualified service technician only.
PROBLEM POSSIBLE CAUSES SOLUTIONS
Tool runs at normal
speed but loses
power under load.
1. Motor parts are worn or
damaged.
2. Cam clutch is worn or stuck due
to lack of lubricant.
1. Lubricate clutch housing.
2. Check for excess clutch oil. Clutch cases
should only be half filled, overfilling can
cause drag on high speed clutch parts, e.g., a
typical oiled/lubricated wrench requires ½ oz
of oil.
Grease lubrication:
Heat is generated due to insufficient grease in
the chamber. Severe operating conditions may
require frequent lubrication.
If the problem persists, send tool for servicing
or return it to the store.
Tool runs at low
speed. Air flows
slightly from exhaust.
1. Motor parts are jammed with dirt.
2. Power regulator is in closed
position.
3. Air flow is blocked by dirt.
1. Check whether there is blockage in air inlet
and filter.
2. Pour pneumatic tool oil into air inlet as per
instructions.
3. Operate the tool by reversing rotation of
the tool to back and forth directions in short
duration. Repeat the above steps as needed.

TROUBLESHOOTING
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AIR-POWERED SHEAR 058-7732-0
Note: For further repair information, please call 1-800-689-9928.
Tool stops working.
Air flows freely from
exhaust.
One or more motor vanes got stuck
due to material build up.
1. Pour pneumatic tool oil into the air inlet.
2. Tap motor housing gently with plastic mallet.
3. Operate the tool by reversing rotation back
and forth in short duration. Repeat the above
steps as needed.
4. Disconnect the air supply. Operate the
motor manually by rotating the drive shank
(wherever applicable)
.
If the problem persists, send tool for servicing
or return it to the store.
Tool does not shut
off.
Throttle valve O-rings are dislodged
from seat inlet valve.
Replace O-rings.
If the problem persists, send tool for servicing
or return it to the store.
PROBLEM POSSIBLE CAUSES SOLUTIONS

EXPLODED VIEW
20
AIR-POWERED SHEAR 058-7732-0
MC-587732-03
26
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