Central Pneumatic 94108 User manual

1” DRIVE INDUSTRIAL

AIR IMPACT WRENCH

ASSEMBLY AND OPERATING INSTRUCTIONS

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at http://www.harborfreight.com

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

94108

Due to continuing improvements, actual product may differ slightly from the product described herein.

Page 2SKU 94108 For technical questions, please call 1-800-444-3353

Specications

Torque 1,250 FT./LBS.

Working Pressure 100 PSI, 115 PSI = maximum air pressure

Air Consumption 14 CFM Average

Air Inlet 1/2 inch – 14 NPT with screen

Drive One inch, Inline air impact; 6” extended anvil

Regulator on Unit 3 torque settings: 1, 2, & 3; Left and Right direction

Overall Dimensions 22” (L) x 8 1/4” (W) x 6 1/2” (H) with side handle

Weight 25.8 LBS.

Save This Manual

You will need the manual for the safety warnings and precautions, assembly instructions,

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 followed 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 lighted. 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. 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. Do not overreach. Keep proper footing and balance at all times. Do not reach over

or across running machines.

8. Use eye and ear protection. Always wear ANSI approved impact safety goggles.

Page 3SKU 94108 For technical questions, please call 1-800-444-3353

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.

9. Maintain tools with care. Keep tools sharp and clean for better and safer

performance. Follow instructions for lubricating and changing accessories. Inspect

tool cords 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. Unplug tool 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 plugging it in.

12. Avoid unintentional starting. Be sure the switch is in the Off position when not

in use and before plugging in. Do not carry any tool with your nger on the trigger,

whether it is plugged in 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. 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.

16. Do not operate tool if under the inuence of alcohol or drugs. Read warning

labels if taking prescription medicine to determine if your judgment or reexes are

impaired while taking drugs. If there is any doubt, do not operate the tool.

17. Maintenance. For your safety, service and maintenance should be performed

regularly by a qualied technician.

18. Use both hands when operating. This tool requires the use of both hands when

operating. This helps maintain tool stability and keeps hands away from the working

area of the tool.

Note: Performance of this tool may vary depending on variations in air compressor perfor-

mance.

Page 4SKU 94108 For technical questions, please call 1-800-444-3353

Impact Wrench Safety Precautions

19. Only use Impact Sockets with this tool. Standard sockets will not withstand

the force applied by this tool, and may break, possible causing personal injury

and/or property injury.

20. Use only specied operating air pressure. Never operate tool above the

recommended working pressure of 100 PSI.

21. Do not use combustible gases. Do not use combustible gases as a power source,

or use tool in areas where combustible gases are stored.

22. OSHA Guidelines. Industrial applications must follow OSHA guidelines.

23. Air Compressor. Read and adhere to all warnings and instructions of the Air

Compressor Instruction Manual.

Warning: The warnings, cautions, and instructions discussed in this instruction manual

cannot cover all possible conditions and situations that may occur. It must be under-

stood by the operator that common sense and caution are factors which cannot be

built into this product, but must be supplied by the operator.

Unpacking

When unpacking, check to make sure the following components shown below are included.

If any parts are missing or broken, please call Harbor Freight Tools at the number on the

cover of this manual as soon as possible.

Side Handle (8)

Cap Screws (7)

Allen Wrench

Impact Wrench

Page 5SKU 94108 For technical questions, please call 1-800-444-3353

Assembly

The only assembly required is to install Side Handle (8), per the following instruc-

tions. Using Cap Screws (7), and the supplied Allen Wrench, mount the Side Handle (8)

to the Front Casing (5). Securely tighten all Cap Screws (7).

Note: Use pipe thread seal or Teon tape on all threaded connections.

Oiler and Filter Connection

Dirt, water, and the lack of pneumatic tool oil are major causes for tool wear. It is recom-

mended to install an optional oiler-lter, as illustrated below for better performance.

Connect the air tool, air hoses, lter, and oiler to the Compressor Air Outlet as illustrated

below. The lter and oiler (not supplied) are recommended but not mandatory for opera-

tion.

A few drops of pneumatic tool oil must be added through the air inlet before each use if an

oiler is not used.

AIR SUPPLY CONNECTION

1. Install a standard 1/2” Air Connector (not included) to the Air Inlet (51). First wrap

the threaded portion of the 1/2” air connector with pipe thread seal tape before

threading it into the Air Inlet (51). Tighten securely.

2. Set the sir pressure regulator at no more than 100 PSI.

3. Check the air line and its connections for air leaks, make note of these, and repair

them before using this tool.

WARNING: Do not exceed the recommended working pressure of 100 PSI. Damage to

your tool, and possible personal injury may result.

Page 6SKU 94108 For technical questions, please call 1-800-444-3353

OPERATION

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 result

otherwise.

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.

1. Select the appropriate size 1” square drive socket (not included) for your needs.

Push and snap the socket onto the Anvil (13).

NOTE: On this tool the designation “R” refers to forward or clockwise rotation. “L” refers to

reverse or counterclockwise rotation. Always be aware of the direction of the threading of

the fasteners you are working on. While most fasteners install with clockwise rotation, some

threads are intentionally the reverse.

2. Set the directions of the Air Impact Wrench to Forward (R=right or clockwise) or

Reverse (L=left or counterclockwise) by adjusting the Rotation/Torque Knob (38). You

may control the amount of torque to be applied by selecting any of the 3 torque settings

(1=low, 2=medium, 3=high).

NOTE: The actual torque delivered at each of the 3 torque settings will depend on the air

pressure supplied to the tool. We suggest that you test the actual torque by tightening a nut

or bolt at each setting, then observing the resultant torque by using a mechanical torque

wrench (not supplied).

3. If installing a nut or bolt, set it as tight as possible by hand.

4. Place and push on a appropriate size impact socket onto Anvil (13) and place the

Impact Socket (not included) over the fastener.

5. Grip the Air Impact Wrench tightly with both hands, and squeeze the Trigger (36).

The tool will operate and tighten the fastener.

Rotation / Torque Knob (38) Air Inlet Connector (51)

Page 7SKU 94108 For technical questions, please call 1-800-444-3353

Caution: Never increase pressure at the air compressor regulator to achieve more torque.

7. When nished, release the Trigger (36), and lift the Impact Wrench off the nut.

8. Remove the air supply hose, then squeeze the Trigger (36) again to release any

remaining air pressure in the Impact Wrench air chamber.

Maintenance

1. After each use, wipe the Impact Wrench with a clean cloth to remove any dirt and

grease buildup.

2. To maintain tool life, always lubricate the air line by adding a few drops of pneumatic

tool oil to the air line (or Air Inlet) before each use. Or, install the automatic oiler-lter

system as illustrated on page 5.

3. Before each use, drain water out of the air compressor tank and condensation from

the air lines. Refer to the Air Compressor Operation Manual.

4. Store the Impact Wrench in a clean and dry location.

OPERATION (continued)

Page 8SKU 94108 For technical questions, please call 1-800-444-3353

Parts List

Rotation / Torque Knob

#205

#60205

Page 9SKU 94108 For technical questions, please call 1-800-444-3353

Assembly Drawing

NOTE: Some parts are listed and shown for illustration purposes only and are not available

individually as replacement parts.

Page 10SKU 94108 For technical questions, please call 1-800-444-3353

Lubrication

Gear oil should be added in part #4, use MoS2 lubricating grease. It should be added

monthly. The amount is 0.033-0.044 lb. each time. Gear oil should be added in part #44,

use Spindle Oil. Add 5-10 drops every day, before operating the tool.

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.

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