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.
CONTENTS SAFETY ALERT SYMBOL AND SIGNAL WORDS ����������������������������� 3 TROUBLESHOOTING ���������������������� 14 PARTS LIST ��������������������������������� 15 ASSEMBLY DIAGRAM ���������������� 16 IMPORTANT SAFETY INSTRUCTIONS �������������������������� 3 LIMITED 1 YEAR WARRANTY ��� 17 GENERAL �������������������������������������������3 WORK AREA �������������������������������������� 3 PERSONAL SAFETY ������������������������� 4 TOOL USE AND CARE ���������������������� 4 SERVICE ���������������
SAVE THIS MANUAL NOTICE is used to address practices not related to personal injury. Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and the receipt in a safe and dry place for future reference.
tool. Distractions are able to result in the loss of control of the tool. Personal safety a. b. c. Stay alert. Watch what you are doing and use common sense when operating the tool. Do not use the tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating the tool increases the risk of injury to persons. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep hair, clothing, and gloves away from moving parts.
d. Disconnect the tool from the air source before making any adjustments, changing accessories, or storing the tool. Such preventive safety measures reduce the risk of starting the tool unintentionally. Turn off and detach the air supply, safely discharge any residual air pressure, and release the throttle and/or turn the switch to its off position before leaving the work area. e. Store the tool when it is idle out of reach of children and other untrained persons.
b. Never operate this tool at greater than 90 PSI operating pressure.
a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles. (California Health & Safety Code § 25249.5, et seq.) WARNING: The brass components of this product contain lead, a chemical known to the State of California to cause birth defects (or other reproductive harm). (California Health & Safety code § 25249.5, et seq.) arms and shoulders. To reduce the risk of vibration-related injury: 1.
FUNCTIONAL DESCRIPTION Air Supply TO PREVENT EXPLOSION: Use only clean, dry, regulated, compressed air to power this tool. Do not use oxygen, carbon dioxide, combustible gases, or any other bottled gas as a power source for this tool. Specifications Chipping Rate 1800 Blows per Minute Chisel Shank Diameter 11/16" Operating Pressure 90 PSI Air Inlet 3/8" - 18 NPT Air Consumption 20 CFM (Continuous) 10 CFM (Intermittent) Overall Length 17" Net Weight 17.
quick coupler, will make operation more efficient, but are not required. WARNING! TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION: Do not install a female quick coupler on the tool. Such a coupler contains an air valve that will allow the air tool to retain pressure and operate accidentally after the air supply is disconnected. Note: Air flow, and therefore tool performance, can be hindered by undersized air supply components. 3.
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. 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 Fig. 2.) 4.
the work area with enough extra length to allow free movement while working. 3. There must not be hazardous objects (such as utility lines or foreign objects) nearby that will present a hazard while working. General Operating Instructions Fig. 5 8. Re-insert the Lockcoil Spring (17) all the way into the slot on the sleeve with only the triangular wire ring left outside (see Fig. 5).
Chipping in a Straight line: 1. Use chalk or some other suitable writing material, mark your work surface to delineate the area you intend to chip. 2. Once the Hammer is attached to the Air Compressor as described in the instructions, place the Chisel along one of the marked lines. Hold the Chipping Hammer firmly with both hands. 3. To begin chipping, depress the Throttle Lever (6) with your thumb. 4.
USER-MAINTENANCE INSTRUCTIONS Procedures not specifically explained in this manual must be performed only by a qualified technician. TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION: Turn off the tool, detach the air supply, safely discharge any residual air pressure in the tool, and release the throttle and/or turn the switch to its off position before performing any inspection, maintenance, or cleaning procedures. TO PREVENT SERIOUS INJURY FROM TOOL FAILURE: Do not use damaged equipment.
Troubleshooting Problem Possible Causes 1. Not enough air pressure and/ or air flow. 2. Obstructed trigger. Likely Solutions 1. Check for loose connections and make sure 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. Clean around trigger to ensure free movement. 3. Lubricate using air tool oil and grease according to directions. 4. Clean air inlet screen of buildup. 3.
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 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.
ASSEMBLY DIAGRAM SKU 99792 For technical questions, please call 1-800-444-3353.
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.
