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HEAVY-DUTY
AIR CHIPPING HAMMER
99792
SET UP AND OPERATING INSTRUCTIONS
®
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.
© ®
Copyright 2008 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
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TROUBLESHOOTING ......................14 CONTENTS SAFETY ALERT SYMBOL AND PARTS LIST ................................. 15 SIGNAL WORDS .............................3 ASSEMBLY DIAGRAM ................ 16 IMPORTANT SAFETY LIMITED 1 YEAR WARRANTY ... 17 INSTRUCTIONS .......................... 3 GENERAL ...........................................3 WORK AREA ......................................3 PERSONAL SAFETY .........................4 TOOL USE AND CARE ......................4 SERVICE .........
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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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d. Disconnect the tool from the air c. Use only the lubricants supplied source before making any adjust- with the tool or specified by the ments, changing accessories, or manufacturer. storing the tool. Such preventive safety measures reduce the risk of Air source starting the tool unintentionally. Turn a. Never connect to an air off and detach the air supply, safely source that is capable of discharge any residual air pressure, exceeding 90 psi. Over and release the throttle and/or t
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b. Never operate this tool at greater Symbol Definitions than 90 PSI operating pressure. Symbol Property or statement Warning: People with pacemakers should Foot-pounds of torque ft-lb consult their physician(s) before us- ing this product; operation of equip- Blows per minute BPM ment in close proximity to a heart pacemaker could cause interference Cubic Feet per Minute flow CFM or failure of the pacemaker. Cubic Feet per Minute flow at SCFM 2. Your risk from these exposures var- standard
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a well ventilated area, and work with arms and shoulders. To reduce the risk of approved safety equipment, such as vibration-related injury: those dust masks that are specially 1. Anyone using vibrating tools regu- designed to filter out microscopic larly or for an extended period should particles. (California Health & Safety first be examined by a doctor and Code § 25249.5, et seq.) then have regular medical check- WARNING: The brass components ups to ensure medical problems are of
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Air Supply FUNCTIONAL DESCRIPTION TO PREVENT Specifications EXPLOSION: Use only clean, dry, regulated, Chipping Rate 1800 Blows per Minute compressed air to power this Chisel Shank Diameter 11/16" tool. Do not use oxygen, Operating Pressure 90 PSI carbon dioxide, combustible Air Inlet 3/8" - 18 NPT gases, or any other bottled gas 20 CFM (Continuous) as a power source for this tool. Air Consumption 10 CFM (Intermittent) Overall Length 17" Net Weight 17.5Lbs * Maximum speed at stated max
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quick coupler, will make operation 9. If the tool will not be used at this more efficient, but are not required. time, turn off and detach the air sup- ply, safely discharge any residual air WARNING! TO PREVENT SERIOUS pressure, and release the throttle INJURY FROM ACCIDENTAL and/or turn the compressor switch to OPERATION: its off position to prevent accidental Do not install a female quick operation. coupler on the tool. Such a coupler contains an air valve that will allow Installi
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pull out the Lockcoil Spring (17) from the Retaining Sleeve (16). This spring is designed as a locking device. Then remove the Retaining Sleeve (16) from the hammer. Fig. 3 5. Turn the chisel 90º and let the flange of the chisel rest on the bottom of the ellipse slot as shown. (See Fig. 3.). Fig. 2 3. Put the spring aside. Lubricate the top edge of the chisel shank chamfer with oil or light grease and then insert the chisel from the ellipse opening of the Retaining Sleeve (16). (See Fi
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the work area with enough extra length to allow free movement while working. 3. There must not be hazardous ob- jects (such as utility lines or foreign objects) nearby that will present a hazard while working. General Operating Instructions Fig. 5 1. If an automatic oiler is not used, add a few drops of Pneumatic Tool Oil 8. Re-insert the Lockcoil Spring (17) all to the airline connection before use. the way into the slot on the sleeve Add a few drops more after each with only the tri
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Chipping in a Straight line: 3. As the chipping action begins to break the chunks of concrete, 1. Use chalk or some other suitable release the Throttle Lever to stop the writing material, mark your work Chipping Hammer, and reposition surface to delineate the area you the Chisel on larger pieces. Do not intend to chip. attempt to break up small pieces with this tool; the chipping rate of 1800 2. Once the Hammer is attached to the blows per minute is too aggressive Air Compressor as d
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Cleaning, Maintenance, and USER-MAINTENANCE Lubrication INSTRUCTIONS Note: Your Chipping Hammer will perform Procedures not specifically best and require minimal mainte- explained in this manual nance when connected to an Airline must be performed only by a Oiler as shown on Page 8. If you do qualified technician. not use an Airline Oiler, follow the TO PREVENT routine maintenance steps below. SERIOUS INJURY Note: These procedures are in addition to FROM ACCIDENTAL the regular c
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Troubleshooting Problem Possible Causes Likely Solutions 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 trigger. 2. Clean around trigger to ensure free movement. 3. Incorrect lubrication or not 3. Lubricate using air tool oil and grease enough lubrication. according to directions. Decreased out
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PLEASE READ THE FOLLOWING PARTS LIST CAREFULLY Part Description Qty THE MANUFACTURER AND/OR DISTRIBUTOR 1 Throttle Valve Plug HAS PROVIDED THE PARTS LIST AND 2 Bushing ASSEMBLY DIAGRAM IN THIS MANUAL AS 3 Throttle Valve A REFERENCE TOOL ONLY. NEITHER THE 4 Valve Spring MANUFACTURER OR DISTRIBUTOR MAKES 5 Throttle Valve Base ANY REPRESENTATION OR WARRANTY OF 6 Throttle Lever ANY KIND TO THE BUYER THAT HE OR SHE 7 Upper Valve Case Lid IS QUALIFIED TO MAKE ANY REPAIRS TO THE 8 Valve
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ASSEMBLY DIAGRAM SKU 99792 For technical questions, please call 1-800-444-3353. Page 16
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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
