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5. Turn the Control Ring (3) slowly to the “ON” position to begin grinding or cutting. The more you turn the knob, the higher the RPM. 6. If the tool requires more force to accomplish the task, verify that the tool receives sufficient, unobstructed airflow (CFM) and increase the pres- sure (PSI) output of the regulator up to the maximum air pressure rating of this tool. CAUTION! TO PREVENT TOOL AND ACCESSORY FAILURE, RE- SULTING IN INJURY: Do not exceed the tool’s maximum air pressu
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explained as part of the regular op- USER-MAINTENANCE eration of the air-operated tool. INSTRUCTIONS 1. Daily - Air Supply Maintenance: Procedures not specifically Every day, perform maintenance on explained in this manual the air supply according to the com- must be performed only by a ponent manufacturers’ instructions. qualified technician. Maintenance on the air supply will allow the tool to operate more safely TO PREVENT and will also reduce wear on the tool. SERIOUS INJURY An
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Troubleshooting Problem Possible Causes Likely Solutions Decreased output. 1. Not enough air pressure and/ 1. Check for loose connections and make sure or air flow. that air supply is providing enough air flow (CFM) at required pressure (PSI) to the tool’s air inlet. Do not exceed maximum air pressure. 2. Obstructed valve. 2. Clean around valve to ensure free movement. 3. Incorrect lubrication 3. Lubricate using air tool oil and grease inadequately lubricated. according to directions. 4
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ACCESSORY LIST Part Description Function Tighten/loosen Clamping Nut (22) and Collet 23 Collet Nut Wrenches Holder (18) for bit installation and removal. Plug into pressure 24 Male Coupler Plug source. *SKU or part number may not be available for some accessories. PLEASE READ THE FOLLOWING CAREFULLY THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENT
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PARTS LIST PARTS LIST Part Description Q’ty Part Description Q’ty 1 Rear End Holder 1 13 Rotor Blade Set 2 Screw 1 14 Cylinder 1 3 Control Ring 1 15 Spacer 1 4 O-ring 2 16 Lateral Disc 1 5 O-ring 1 17 Ball Bearing 1 6 Pin 1 18 Collet Holder 1 7 Hose Plug 1 19 Sleeve 1 8 Intake Plate 1 20 Front Cover 1 9 Ball Bearing 1 21 Collet, 1/8" 1 10 Pin 1 22 Clamping Nut 1 11 Bearing Plate 1 23 Collet Nut Wrenches (not shown) 2 12 Rotor 1 24 Male Coupler Plug (not shown) 1 ASSEMBLY DIAGRAM Record Product’s
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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, norm
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AIR MICRO DIE GRINDER
Model 97870
SET UP AND OPERATING INSTRUCTIONS
Diagrams within this manual may not be drawn proportionally.
Due to continuing improvements, actual product may differ slightly from the product described herein.
®
Distributed exclusively by Harbor Freight Tools .
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
© ®
Cop
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TROUBLESHOOTING ......................13 CONTENTS SAFETY ALERT SYMBOL AND ACCESSORY LIST ...................... 14 SIGNAL WORDS .............................3 PARTS LIST ................................. 15 IMPORTANT SAFETY ASSEMBLY DIAGRAM ................ 15 INSTRUCTIONS .......................... 3 GENERAL ...........................................3 LIMITED 90 DAY WARRANTY .... 16 WORK AREA ......................................3 PERSONAL SAFETY .........................4 TOOL USE AND CARE
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NOTICE is used to SAVE THIS MANUAL address practices Keep this manual for the safety warn- not related to personal injury. ings and precautions, assembly, operat- CAUTION, without ing, inspection, maintenance and cleaning the safety alert procedures. Write the product’s serial symbol, is used to address number in the back of the manual near the practices not related to assembly diagram (or month and year of personal injury. purchase if product has no number). Keep this manual and
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tool. Distractions are able to result in conditions. Wear heavy-duty work the loss of control of the tool. gloves during use. g. Always wear eye protec- Personal safety tion. Wear ANSI-ap- a. Stay alert. Watch what you are do- proved safety goggles. ing and use common sense when h. Always wear hearing operating the tool. Do not use the protection when using tool while tired or under the influ - the tool. Prolonged expo- ence of drugs, alcohol, or medica- sure to high intensity noise tio
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affects the tool’s operation. If dam- Tool use and care aged, have the tool serviced before a. Use clamps or another practical using. Many accidents are caused way to secure and support the by poorly maintained tools. There is a workpiece to a stable platform. risk of bursting if the tool is damaged. Holding the work by hand or against h. Use only accessories that are the body is unstable and is able to identified by the manufacturer for lead to loss of control. the specific tool mode
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b. Never use oxygen, carbon dioxide, Symbol Definitions combustible gases or any bottled gas as an air source for the tool. Symbol Property or statement Such gases are capable of explosion WARNING marking concerning Risk and serious injury to persons. of Explosion. SAVE THESE Specific Safety Instructions INSTRUCTIONS. 1. The warnings and precautions dis- cussed in this manual cannot cover all possible conditions and situations SYMBOLS AND that may occur. It must be under- SPECIFIC SAFE
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ductive harm). (California Health & this tool. If you feel any medical or Safety code § 25249.5, et seq.) physical symptoms related to vibra- tion (such as tingling, numbness, and 2. Only use with accessories rated to white or blue fingers), seek medical handle the forces exerted by this advice as soon as possible. tool during operation. Accessories not designed for the forces gener- 2. Do not smoke during use. Nico- ated may break and forcefully launch tine reduces the blood supply to
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Air Supply FUNCTIONAL DESCRIPTION TO PREVENT Specifications EXPLOSION: Use only clean, dry, regulated, Exhaust Position Frontal Exhaust compressed air to power this On/Off Method Built-in Rotary Valve tool. Do not use oxygen, 1/4" -18 NPT (male inlet Air Inlet carbon dioxide, combustible coupler) gases, or any other bottled Maximum Speed* 25,000 RPM gas as a power source for this Air Consumption 2 CFM @ 90 PSI tool. Collet Size 1/8" * Maximum speed at stated maximum air pressure. Ex-
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ponents, such as a connector and 9. If the tool will not be used at this quick coupler, will make operation time, turn off and detach the air sup- more efficient, but are not required. ply, safely discharge any residual air pressure, and release the throttle WARNING! TO PREVENT SERIOUS and/or turn the switch to its off posi- INJURY FROM ACCIDENTAL tion to prevent accidental operation. OPERATION: Do not install a female quick Note: Residual air pressure should not be coupler on the tool.
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2. Tighten finger tight, then use the two OPERATING INSTRUCTIONS Collet Nut Wrenches, one on the top Read the ENTIRE IMPORTANT of the Clamping Nut, and the other on SAFETY INFORMATION the Collet Holder (18) and tighten the section at the beginning of this tip securely. manual including all text under subheadings therein before set Work Piece and Work Area Set Up up or use of this product. 1. Designate a work area that is clean Inspect tool before use, looking and well-lit. The work area
