Cornwell Tools CAT4212 User manual

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CAT4212/CAT4212G 1 REV: 11/21/19
Copyright © Professional Tool Products, 2019
All rights reserved
OPERATING MANUAL •WARNING INFORMATION •PARTS LIST
WARNING
Some dust created by power sanding, sawing, grinding, drilling, and other
construction activities contains chemicals known to cause cancer, birth
defects or other reproductive harm. Some examples of these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry
products, and
• arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type
of work. To reduce your exposure to these chemicals: work in a well ventilated
area, and work with approved safety equipment, such as those dust masks that
are specially designed to filter out microscopic particles.
Tool Width .......................................2.75"
Tool Length ......................................4.50"
Tool Height .......................................7.88"
Tool Weight .....................................2.7 lb
Maximum Free Speed ......................... 9700 RPM
Maximum Torque/Applied .......................500 ft-lbs
Breakaway Torque.............................650 ft-lbs
Sound Pressure Level .......................... 97.5 dBA
Vibration Level................................9.27 m/s²
Air Consumption ................................4.7 cfm
Recommended Hose Size .........................3/8" ID
Air Inlet Size ................................. 1/4" NPT
SPECIFICATIONS
WARNING
ALWAYS READ
INSTRUCTIONS
BEFORE USING
POWER TOOLS
ALWAYS WEAR
SAFETY GOGGLES
ALWAYS WEAR
HEARING
PROTECTION
AVOID PROLONGED
EXPOSURE TO
VIBRATION
CAT4212 / CAT4212G
1/2" bluePOWER®STUBBY IMPACT WRENCH
1/2" bluePOWER®STUBBY IMPACT WRENCH - GREEN

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CAT4212/CAT4212G 2 REV: 11/21/19
FAILURE TO OBSERVE THESE WARNINGS COULD RESULT IN INJURY
THIS INSTRUCTION MANUAL CONTAINS
IMPORTANT SAFETY INFORMATION.
READ THIS INSTRUCTION MANUAL CAREFULLY
AND UNDERSTAND ALL INFORMATION BEFORE
OPERATING THIS TOOL.
• It is the responsibility of the owner to make sure all
personnel read this manual prior to using this air tool.
It is also the responsibility of the air tool owner to keep
this manual intact and in a convenient location for all
to see and read. If the manual or product labels are
lost or not legible, contact Cornwell for replacements.
If the operator is not fluent in English, the product and
safety instructions shall be read to and discussed
with the operator in the operator's native language by
the purchaser/owner or his designee, making sure
that the operator comprehends its contents.
• Always operate, inspect and maintain this tool in
accordance with American National Standards
Institute Safety Code of Portable Air Tools (ANSI
B186.1) and any other applicable safety codes
and regulations.
• For safety, top performance and maximum durability
of parts, operate this tool at 90 psig: 6.2 bar max air
pressure with 3/8" diameter air supply hose.
• Always wear impact-resistant eye protection when
operating or performing maintenance on this tool
(users and bystanders).
• Always wear hearing protection when using this tool
(users and bystanders). High sound levels can cause
permanent hearing loss. Use hearing protection as
recommended by your employer or OSHA regulation.
• Keep the tool in efficient operating condition.
• Operators and maintenance personnel must be
physically able to handle the bulk, weight and
power of this tool.
• Keep tool out of reach of children.
• Air under pressure can cause severe injury. Never
direct air at yourself or others. Always turn off the
air supply, drain hose of air pressure and detach
tool from air supply before installing, removing or
adjusting any accessory on this tool, or before
performing any maintenance on this tool. Failure
to do so could result in injury.Whip hoses can cause
serious injury.Always check for damaged, frayed or
loose hoses and fittings, and replace immediately.
Do not use quick detach couplings at tool. See
instructions for correct set-up on page 3.
• Air powered tools can vibrate during use.Vibration,
repetitive motions or uncomfortable positions over
extended periods of time may be harmful to your
hands and arms. Discontinue use of tool if discomfort,
tingling feeling or pain occurs. Seek medical advice
before resuming use.
• Place the tool on the work before starting the tool.
Do not point or indulge in any horseplay with this tool.
• Note direction of rotation BEFORE operating this tool.
• Slipping, tripping and/or falling while operating air tools
can be a major cause of serious injury or death. Be aware
of excess hose left on the walking or work surface.
• Keep body working stance balanced and firm. Do not
overreach when operating the tool.
• Anticipate and be alert for sudden changes in motion
during start up and operation of any power tool.
• Do not carry tool by the hose. Protect the hose
from sharp objects and heat.
• Tool shaft may continue to rotate briefly after throttle
is released.Avoid direct contact with accessories
during and after use. Gloves will reduce the risk of
cuts or burns.
• Keep away from rotating end of tool. Do not wear
jewelry or loose clothing. Secure long hair. Scalping
can occur if hair is not kept away from tool and
accessories. Choking can occur if neckwear is not
kept away from tool and accessories.
• Impact wrenches are not torque control devices.
Fasteners with specific torque requirements must
be checked with suitable torque measuring
devices after installation with an impact wrench.
• Do not lubricate tools with flammable or volatile
liquids such as kerosene, diesel or jet fuel.
• This tool is not insulated against electric shock.
• This tool must not be used in explosive atmospheres.
• Do not force tool beyond its rated capacity.
•Use only impact sockets and accessories on this
tool. Do not use hand sockets or accessories.
• Use accessories recommended by Cornwell Tools.
• Do not use (or modify) the tool for any other
purpose than that for which it was designed
without consulting the manufacturer's authorized
representative.
• Do not remove any labels. Replace any damaged labels.
• Failure to heed these warnings may result in serious or
fatal personal injury and/or property damage.
WARNING: This product can expose you to
chemicals including phthalates, which is known to
the State of California to cause cancer and birth
defects or other reproductive harm. For more
information go to www.P65Warnings.ca.gov.
CAT4212 / CAT4212G
1/2" bluePOWER®STUBBY IMPACT WRENCH
1/2" bluePOWER®STUBBY IMPACT WRENCH - GREEN

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CAT4212/CAT4212G 3 REV: 11/21/19
AIR SUPPLY
Tools operate on a wide range of air pressures. It is recommended
that air pressure of these tools measures 90 psig at the tool with
the trigger fully depressed and no load applied to the tool. Higher
pressure (over 90 psig; 6.2 bar) raises performance beyond the
rated capacity of the tool, which will shorten tool life and could
cause injury.
Always use clean, dry air. Dust, corrosive fumes and/or water in the
air line will cause damage to the tool. Drain water from air lines
and compressor prior to running tool. Clean the air inlet filter screen
weekly. The recommended hookup procedure can be viewed in the
above figure.
The air inlet used for connecting air supply has standard 1/4" NPT.
Line pressure should be increased to compensate for unusually long
air hoses (over 25 feet). Minimum hose diameter should be 3/8" I.D.
and fittings should have the same inside dimensions and be tightly
secured.
Ensure an accessible emergency shut off valve has been installed in
the air supply line and make others aware of its location.
LUBRICATION
Lubricate the air motor daily with high quality air tool oil. If no air
line oiler is used, run 1/2 oz. of oil through the tool. The oil can
be squirted into the tool air inlet or into the hose at the nearest
connection to the air supply, then run the tool. A rust inhibitive oil is
acceptable for air tools.
WARNING: After an air tool has been lubricated, oil will discharge
through the exhaust port during the first few seconds of operation.
The exhaust port must be covered with a towel before applying air
pressure to prevent serious injury.
OPERATION
This tool is an impacting tool and not a torque meter. When specific
torque is required, it must be checked with a torque meter after
fitting the fastener with the impact. This impact wrench is rated
at 1/2"SAE bolt size. Rating must be downgraded for spring
U bolts, tie bolts, long cap screws, double depth nuts, badly rusted
conditions and spring fastener, as they absorb much of the impact
power. When possible, clamp or wedge the bolt to prevent spring
back.
Soak rusted nuts in penetrating oil and break rust seal before
removing with impact wrench. If nut does not start to move in three
to five seconds, use a larger size impact wrench. Do not use impact
wrench beyond rated capacity as this will drastically reduce tool life.
The reversing valve is used to change the direction of the tool.
When the valve is out, the tool is in forward or right hand direction.
When the valve is pushed in, the tool is in reverse or left hand
direction.
NOTE: Always turn off the air supply, drain hose of air pressure
and detach tool from air supply before installing, removing or
adjusting any accessory on this tool, or before performing any
maintenance on this tool.
NOTE: Actual torque on a fastener is directly related to joint
hardness, tool speed, condition of socket and the time the tool is
allowed to impact. Use the simplest possible tool to socket hook up.
Every condition absorbs energy and reduces power.
NOTE: During operation, safety goggles must always be worn
to guard against flying debris (users and bystanders).
TROUBLESHOOTING
Other factors outside the tool may cause loss of power or erratic action.
Reduced compressor output, excessive drain on the air line, moisture or
restrictions in air pipes or the use of hose connections of improper size or
poor conditions may reduce air supply. Grit or gum deposits in the tool may
cut power and may be corrected by cleaning the air strainer and flushing
out the tool with gum solvent oil or an equal mixture of SAE #10 and
kerosene. If outside conditions are in order, disconnect tool from hose and
take tool to your nearest authorized service center.
Drain Daily
RegulatorOilerQuick CouplerLeader
Hose
Nipple
Do Not Install
Quick Coupling
Here
Nipple
Filter
Air Supply
Whip Hose
CAT4212 / CAT4212G
1/2" bluePOWER®STUBBY IMPACT WRENCH
1/2" bluePOWER®STUBBY IMPACT WRENCH - GREEN

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CAT4212/CAT4212G 4 REV: 11/21/19
WARRANTY COVERAGE
Cornwell Quality Tools Company (“Cornwell”) warrants this product against defects in material and workmanship for a period of TWO (2) YEARS from the date of original retail
purchase. Subject to the conditions and limitations set forth below, Cornwell will, at its option, either repair or replace any part of the product(s) that proves defective by reason
of improper workmanship or materials.
This warranty does not cover any damage to this product that results from accident, abuse, misuse, natural or personal disaster, or any unauthorized disassembly, repair, or
modification. Repairs, disassembly and modification are only authorized to be made by Cornwell or a Cornwell Authorized Warranty Center.
WARRANTY SERVICE
In order to have your tool repaired, return the tool to any Cornwell Authorized Warranty Center, freight prepaid. Please include a copy of your proof of purchase and a brief
description of the problem. The tool will be inspected and if any part or parts are found to be defective in material or workmanship, they will be repaired free of charge, and the
repaired tool will be returned to you freight prepaid.
EXCLUSIONS AND LIMITATIONS
THIS WARRANTY AND THE REMEDIES SET FORTH ABOVE ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, REMEDIES AND CONDITIONS, WHETHER ORAL OR
WRITTEN, EXPRESS OR IMPLIED. CORNWELL SPECIFICALLY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES, INCLUDING, TO THE EXTENT PERMITTED BY APPLICABLE LAW,
ANY WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IF CORNWELL CANNOT LAWFULLY DISCLAIM IMPLIED WARRANTIES UNDER THIS LIMITED
WARRANTY, ALL SUCH IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION OF THIS WARRANTY.
IN NO EVENT SHALL CORNWELL BE LIABLE TO THE PURCHASER OR TO THE USER OF A CORNWELL PRODUCT FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
BASED UPON BREACH OF WARRANTY, BREACH OF CONTRACT, NEGLIGENCE, TORT, OR ANY OTHER LEGAL THEORY. SUCH DAMAGES INCLUDE, WITHOUT LIMITATION, EXPENSES,
LOST REVENUES, LOST SAVINGS, LOST PROFITS, OR ANY OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING FROM THE PURCHASE, USE OR INABILITY TO USE THE
CORNWELL PRODUCT.
Some states do not allow the exclusion or limitation of incidental or consequential damages or exclusions or limitation on the duration of implied warranties or conditions, so
the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary by state.
Repair kits and replacement parts are available for many Cornwell products, regardless of whether or not the product is still covered by a warranty plan.
Cornwell Quality Tools Company
667 Seville Road • Wadsworth, OH 44281-1094
CAT4212 / CAT4212G
1/2" bluePOWER®STUBBY IMPACT WRENCH
1/2" bluePOWER®STUBBY IMPACT WRENCH - GREEN

-Save these instructions-
CAT4212 / CAT4212G
1/2" bluePOWER®STUBBY IMPACT WRENCH
1/2" bluePOWER®STUBBY IMPACT WRENCH - GREEN
CAT4212/CAT4212G 5 REV: 11/21/19
PARTS LIST
Item Part No Parts Description Qty
101 RS223801 HAMMER CASE ASS'Y (incl. 102&109) 1
102 RS223802 ANVIL BUSHING 1
103 RS428203 SOCKET RETAINER 1
104 RS428204 O-RING (7x2) 1
105 RS421201 ANVIL ASSEMBLY (incl. 103&104) 1
106 RS223806 HAMMER PIN (2 PACK) 1
107 RS223807 HAMMER (2 PACK) 1
108 RS223862 HAMMER FRAME 1
109 RS223809 GREASE FITTING (6x6Lx1.8) 1
201 RS223860 BALL BEARING (R8) 1
202 RS223861 CYLINDER ASS'Y 1
203 RS223812 SPRING PIN (2.5x8) 2
204 RS223853 ROTOR 1
205 RS223814 ROTOR BLADE (6 PACK) 1
206 RS223855 REAR END PLATE 1
207 RS223856 SCREW (M3x8) 2
208 RS223857 BALL BEARING (R6) 1
301 RS223858 HOUSING ASSEMBLY BLUE 1
RS223858G HOUSING ASSEMBLY GREEN 1
302 RS223859 MUFFLER 1
303 RS223820 PIN (3.2x28.1) 1
304 * O-RING (16.18x2.53) 1
305 * REVERSE VALVE 1
306 * O-RING (18x1.5) 1
307 RS223824 EXHAUST DEFLECTOR 1
308 RS223825 SCREW (M3x8) 1
Item Part No Parts Description Qty
309 * RS223826 C-RING (RTW #16) 1
310 * STEM SEAL 1
311 * STEM BUSHING 1
312 * VALVE STEM 1
313 * RS223830 SPRING (14x8x20L) 1
314 RS223831 O-RING (17x2) 2
315 RS428218 AIR INLET 1
316 RS223833 E-RING (2.5) 1
401 RS223850 GASKET 1
402 RS223835 SPRING (2.5x5.2L) 1
403 RS223836 STEEL BALL (2.5MM) 1
404 RS223837 REGULATOR 1
405 RS223838 O-RING (42x2) 1
406 RS223839 TRIGGER 1
407 RS223840 O-RING (3.5x1.6) 1
408 RS223847 REVERSE BUTTON 1
409 RS223848 FORWARD BUTTON 1
410 RS223849 NYLOK SCREW (M4x77) 4
411 RS223844 SUPPORT BAR LEFT 1
412 RS223845 SUPPORT BAR RIGHT 1
RSCAT4212WL CAT4212 PRODUCT WARNING LABEL 1
RSCAT4212GWL CAT4212G PRODUCT WARNING LABEL (GREEN) 1
* RS223822 THROTTLE REVERSE VALVE ASSEMBLY
(Incl. 304, 305, 306, 309, 310, 311, 312, 313)