Central Pneumatic 95098 User manual

1/2” Twin Hammer Composite
Air Impact Wrench
ASSEMBLY AND OPERATING INSTRUCTIONS
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at http://www.harborfreight.com
Copyright © 2006 by Harbor Freight Tools®. All rights reserved. No portion of this
manual or any artwork contained herein may be reproduced in any shape or form
without the express written consent of Harbor Freight Tools.
For technical questions and replacement parts, please call 1-800-444-3353
Manual Revised 11h
95098
Due to continuing improvements, actual product may differ slightly from the product described herein.

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Specications
Drive Size: 1/2” Square Torque range 100-300 ft / lbs.
Anvil Retainer: Hog Ring Air Inlet Size: 1/4” - 18 NPT
Blows per minute: 900 Air Usage 8 CFM average
Recommended Hose Size: 1/2” i.d. Tool Weight: 4.35 lbs.
Regulator Settings: 3 forward (CW)
1 reverse (CCW)
Recommended Air
Pressure: 90 PSI Max.
Save This Manual
You will need the manual for the safety warnings and precautions, assembly in-
structions, operating and maintenance procedures, parts list and diagram. Keep
your invoice with this manual. Write the invoice number on the inside of the front
cover. Keep the manual and invoice in a safe and dry place for future reference.
Safety Warnings and Precautions
WARNING: When using tool, basic safety precautions should always be fol-
lowed to reduce the risk of personal injury and damage to equipment.
Read all instructions before using this tool!
1. Keep work area clean. Cluttered areas invite injuries.
2. Observe work area conditions. Do not use machines or power tools in
damp or wet locations. Don’t expose to rain. Keep work area well lit. Do
not use electrically powered tools in the presence of ammable gases or
liquids.
3. Keep children away. Children must never be allowed in the work area. Do
not let them handle machines, tools, or extension cords.
4. Store idle equipment. When not in use, tools must be stored in a dry
location to inhibit rust. Always lock up tools and keep out of reach of
children.
5. Use the right tool for the job. Do not attempt to force a small tool or
attachment to do the work of a larger industrial tool. There are certain
applications for which this tool was designed. It will do the job better
and more safely at the rate for which it was intended. Do not modify this
tool and do not use this tool for a purpose for which it was not intended.
6. Dress properly while working. Do not wear loose clothing or jewelry as
they can be caught in moving parts. Protective, electrically non-conductive
clothes and non-skid footwear are recommended when working. Wear
restrictive hair covering to contain long hair.
7. Use eye and ear protection. Always wear ANSI-approved impact safety
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goggles. Wear a full face shield if you are producing metal lings or wood
chips. Wear an ANSI approved dust mask or respirator when working around
metal, wood, and chemical dusts and mists.
8. Do not overreach. Keep proper footing and balance at all times. Do not
reach over or across running machines.
9. Maintain tools with care. Keep tools clean and in good condition for better
and safer performance. Follow instructions for lubricating and changing
accessories. Inspect tool ttings and hoses periodically and, if damaged,
have them repaired by an authorized technician. The handles must be kept
clean, dry, and free from oil and grease at all times.
10. Disconnect power. Disconnect from air pressure source when not in use.
11. Remove adjusting keys and wrenches. Check that keys and adjusting
wrenches are removed from the tool or machine work surface before
connecting it.
12. Avoid unintentional starting. Be sure the switch is in the Off position when
not in use and before attaching to pressure source. Do not carry any tool
with your nger on the trigger, whether it is attached or not.
13. Stay alert. Watch what you are doing, use common sense. Do not operate
any tool when you are tired.
14. Check for damaged parts. Before using any tool, any part that appears
damaged should be carefully checked to determine that it will operate
properly and perform its intended function. Check for alignment and binding
of moving parts; any broken parts or mounting xtures; and any other
condition that may affect proper operation. Any part that is damaged should
be properly repaired or replaced by a qualied technician. Do not use the
tool if any switch does not turn On and Off properly.
15. Guard against electric shock when working on electrical equipment.
Prevent body contact with grounded surfaces such as pipes, radiators,
ranges, and refrigerator enclosures.
16. Use only Impact Sockets and extension with this tool. Standard
sockets will not withstand the force applied by this tool, and may break
possibly causing severe damage to the tool, the operator, bystanders
and other property.
17. Replacement parts and accessories. When servicing, use only identical
replacement parts. Use of any other parts will void the warranty. Only use
accessories intended for use with this tool. Approved accessories are
available from Harbor Freight Tools.
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18. Do not operate tool if under the inuence of alcohol or drugs. Read
warning labels on prescriptions to determine if your judgment or reexes are
impaired while taking drugs. If there is any doubt, do not operate the tool.
19. Use proper size and type air pressure line and ttings. The
recommended air line for this tool is 1/2” delivering no more than 90 PSI.
Recommended air inlet size is 1/4” - 18 NPT.
20. Maintenance. For your safety, service and maintenance should be
performed regularly by a qualied technician.
21. You should maintain a proper regulator and moisture trap in your air
line at all times.
22. Compressed air only. Only use clean, dry and regulated compressed air at
no more than 90 PSI to power this tool. Never use oxygen, carbon dioxide or
any other bottled gas as a power source for this tool.
Note: Performance of this tool may vary depending on variations in local air
pressure.
Warning: The warnings, cautions, and instructions discussed in this instruction
manual cannot cover all possible conditions and situations that may occur. It
must be understood by the operator that common sense and caution are factors
which cannot be built into this product, but must be supplied by the operator.
Air Impact
Wrench
If you are not using an in-line oiler, you should inject a few drops of pneumatic
oil into the air inlet of the tool after every hour of continuous use. Hold the
tool so the inlet is facing up, squeeze the trigger and place 1 or 2 drops of oil
in the inlet. Squeezing the trigger allows the oil to circulate in the mechanism.
Unpacking
When unpacking, check to make sure the following parts are included.
(1) 1/2” Twin Hammer Composite Air Impact Wrench
If any parts are missing or broken, please call Harbor Freight Tools at the number
on the cover of this manual.
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2. Connect the air compressor hose to the Air Connector. Turn on the air
compressor and set the air pressure regulator at 90 PSI.
WARNING: Do not exceed the recommended pressure of 90 PSI. Damage to
your tool, and possible personal injury may result.
3. Check the air line and its connections for air leaks. Make note of these, and
repair them before using this tool.
NOTE: Turn off your air compressor and disconnect the air pressure hose before
changing sockets or making any adjustments to this tool. Severe injury or property
damage may otherwise result.
WARNING: This tool generates considerable torque when in use. Always hold the
tool with both hands when using, and brace yourself to resist the torque which will
be delivered to the work piece.
4. Select the appropriate size 1/2” square drive socket (not included) for your
needs. Push and snap the socket onto the Anvil (6).
5. Set the direction of the Air Impact Wrench to “FORWARD” or “REVERSE”.
By rotating the Reverse Knob (45) to the right, you are setting the tool to
operate FORWARD. There are three forward torque positions: low, medium
and high (1,2 and 3). By rotating the Reverse Knob (45) all the way to the
left you are choosing the REVERSE position. The reverse position is always
high torque. The middle notch in the center (between forward and reverse)
is the NEUTRAL. Please see photos on page 6.
NOTE: In this booklet, “FORWARD” refers to clockwise rotation, and “REVERSE”
refers to counterclockwise rotation. Always be aware of the direction of the
threading of the fastener you are working on. While most fasteners install with
clockwise rotation, some threads are intentionally the reverse.
NOTE: The actual torque delivered at each of the three FORWARD settings will
depend on the air pressure supplied to the tool. We suggest that you test the ac-
tual torque by tightening a nut or bolt at each setting, then observing the resultant
torque by using a mechanical torque wrench (not supplied).
6. If installing a nut or bolt, set it as tight as possible by hand.
7. Place an Impact Socket (not included) over the fastener.
Operation
1. Install a standard 1/4” Air Connector (not included) to the Air Inlet (31). First
wrap the threaded portion of the 1/4” air connector with pipe thread seal tape
before threading it into the Air Inlet (31). Tighten securely.
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8. Grip the Air Impact Wrench tightly with both hands, and squeeze the trigger
(20). The tool will operate and tighten the fastener.
9. When the fastener is tightened, release the Trigger (20), and remove the tool
from the fastener.
10. If possible, check the actual torque applied to the fastener with a mechanical
torque wrench (not supplied).
11. If removing a fastener, rotate the Reverse Knob (45) counterclockwise,
assuming that the fastener is a standard right-hand thread. Always check to
be sure of the thread direction of any fastener before attempting to install or
remove it. If the fastener is a left-hand thread, turn the Reverse Knob (45) to
the right for removal.
12. Place an appropriate Impact Socket (not included) over the fastener. Holding
the Air Impact Wrench with both hands, squeeze the trigger (20). The
fastener should come off.
WARNING: If the fastener will not come off, rst check to be sure of the direc-
tion of the thread. If you have the thread direction correct and the fastener will
not come off, DO NOT INCREASE THE AIR PRESSURE to the tool beyond 90
PSI. This may damage the tool. You may have to use penetrating oil, heat, or
a mechanical wrench to remove the fastener.
13. When you are done using this tool, turn off the air compressor, and
disconnect the air hose. Put the Air Impact Wrench away in its proper
storage place.
Maintenance
1. Your Air Impact Wrench should be kept clean, dry and lightly oiled. When not
in use, store your tool in its original box in a suitable place where it will not
be exposed to water, corrosive materials, or undue banging around.
2. Make sure this tool is disconnected from its power source before attempting
any maintenance.
3. If your tool loses power, or you notice air leaks, take it to a certied
technician for service.
In the forward
position
In the reverse
position
45
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Parts List
NOTE: Some parts are listed and shown for illustration purposes only and are not available
individually as replacement parts.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE
BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT
OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN
FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL
REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND
LICENSED TECHNICIANS AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK
AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT
OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION
OF REPLACEMENT PARTS THERETO.
Trigger

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Assembly Drawing

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90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet
high quality and durability standards, and warrants to the original purchaser that
this product is free from defects in materials and workmanship for the period
of 90 days from the date of purchase. This warranty does not apply to damage
due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or
alterations outside our facilities, criminal activity, improper installation, normal
wear and tear, or to lack of maintenance. We shall in no event be liable for
death, injuries to persons or property, or for incidental, contingent, special or
consequential damages arising from the use of our product. Some states do
not allow the exclusion or limitation of incidental or consequential damages, so
the above limitation of exclusion may not apply to you. THIS WARRANTY IS
EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us
with transportation charges prepaid. Proof of purchase date and an explanation
of the complaint must accompany the merchandise. If our inspection veries the
defect, we will either repair or replace the product at our election or we may elect
to refund the purchase price if we cannot readily and quickly provide you with a
replacement. We will return repaired products at our expense, but if we determine
there is no defect, or that the defect resulted from causes not within the scope of
our warranty, then you must bear the cost of returning the product.
This warranty gives you specic legal rights and you may also have other rights
which vary from state to state.