Harbor Freight Tools 3/4 in. Heavy Duty Air Impact Wrench Product manual
Contents
1. 3 J z I ogm H _ _ l 3 ma Qu 10 apen phen T z 1 q 9 i r S OOL 9 pa e911qn7 4 e adojs Pu 2 bead Page 9 For technical questions please call 1 888 866 5797 Item 66984 OPERATING INSTRUCTIONS SAFETY INFORMATION Read the ENTIRE IMPORTANT section at the beginning of this manual including all text under subheadings therein before set up or use of this product Inspect tool before use looking for damaged loose and missing parts If any problems are found do not use tool until repaired Tool Set Up TO PREVENT AWARNING 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 Do not adjust or tamper with any control or component in a way not specifically explained within manual Improper adjustment can result in tool failure or other serious hazards Work Piece and Work Area Set Up 1 Item 66984 Designate a work area that is clean and well lit The work area must not allow access by children or pets to prevent injury a2. 4 Attach all accessories properly to the tool before connecting the air supply Item 66984 For technical questions please call 1 888 866 5797 A loose accessory may detach or break during operation 5 Obey the manual for the air compressor used to power this tool 6 Install an in line shutoff valve to allow immediate control over the air supply in an emergency even if a hose is ruptured 7 Use this tool with both hands only Using tools with only one hand can result in loss of control 8 Do not lay the tool down until it has come to a complete stop Moving parts can grab the surface and pull the tool out of your control Vibration Precautions This tool vibrates during use Repeated or long term exposure to vibration may cause temporary or permanent physical injury particularly to the hands arms and shoulders To reduce the risk of vibration related injury 1 Anyone using vibrating tools regularly or for an extended period should first be examined by a doctor and then have regular medical check ups to ensure medical problems are not being caused or worsened from use Pregnant women or people who have impaired blood circulation to the hand past hand injuries nervous system disorders diabetes or Raynaud s Disease should not use this tool If you feel any symptoms related to vibration such as tingling numbness and white or blue fingers seek medical advice as soon as possible 2 Do not smoke dur
3. approved safety goggles Always wear hearing protection when using the tool Prolonged exposure to high intensity noise is able to cause hearing loss Tool use and care Use clamps or another practical way to secure and support the workpiece to a stable platform Holding the work by hand or against the body is unstable and is able to lead to loss of control Do not force the tool Use the correct tool for the application The correct tool will do the job better and safer at the rate for which the tool is designed Do not use the tool if the switch does not turn the tool on or off Any tool that cannot be controlled with the switch is dangerous and must be repaired 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 For technical questions please call 1 888 866 5797 Page 3 Store the tool when it is idle out of reach of children and other untrained persons A tool is dangerous in the hands of untrained users Maintain the tool with care A properly maintained tool is easier to control Check for misalignment or binding of moving parts breakage of parts and any other condition that aff
4. INJURY FROM TOOL FAILURE Do not use damaged equipment If abnormal noise vibration or leaking air occurs have problem corrected before further use TO PREVENT EXPLOSION Lubricate tool only with specified lubricants Lubricate the air inlet using only pneumatic tool oil Lubricate the internal mechanism using only white lithium grease Other lubricants may damage the mechanism and may be highly flammable causing an explosion Cleaning Maintenance and Lubrication Note These procedures are in addition to the regular checks and maintenance explained as part of the regular operation of the air operated tool Page 11 Housing heats during use Item 66984 Daily Air Supply Maintenance Every day perform maintenance on the air supply according to the component manufacturers instructions The lubricator s oil level needs to be maintained and the moisture filter must be regularly drained Performing routine maintenance on the air supply will allow the tool to operate more safely and will also reduce wear on the tool Quarterly every 3 months Tool Disassembly Cleaning and Inspection Have the internal mechanism cleaned inspected and lubricated by a qualified technician When storing always store Impact Wrench in clean dry and safe location out of reach of children Troubleshooting or air flow Obstructed trigger Incorrect lubrication or not enough lubrication Block
5. Symbol and Signal Words In this manual on the labeling and all other information provided with this product This is the safety alert symbol It is used to alert you to potential personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or death DANGER indicates 4 DANGER a hazardous situation which if not avoided will result in death or serious injury AWARNING WARNING indicates a hazardous situation which if not avoided could result in death or serious injury ACAUTION CAUTION used with the safety alert symbol indicates a hazardous situation which if not avoided could result in minor or moderate injury Item 66984 For technical questions please call 1 888 866 5797 IMPORTANT SAFETY INSTRUCTIONS INSTRUCTIONS PERTAINING TO A RISK OF FIRE ELECTRIC SHOCK OR INJURY TO PERSONS WARNING When using tools basic precautions should always be followed including the following General a To reduce the risks of electric shock fire and injury to persons read all the instructions before using the tool Work area a Keep the work area clean and well lighted Cluttered benches and dark areas increase the risks of electric shock fire and injury to persons b Do not operate the tool in explosive atmospheres such as in the presence of flammable liquids gases or dust The tool is able to create sparks resulting in the ignition of the dust or
6. and replace damaged parts before use Tighten housing assembly If housing cannot tighten properly internal parts may be misaligned 3 Replace damaged components 4 Clean or replace valve assembly Follow all safety precautions whenever diagnosing or servicing the tool Disconnect air supply before service PARTS LIST Screw Hammer Case Screw 4 Washer_ 4 5 AnvilBushing_____ 4 6 HogRing__________ 1 E II O di 9 Pn 22 ce Qty 4 15 Front End Plate 1 16 Pin____ 1 17 Rotor 1 18 Vane _______ 6 Part _ Description____ Qty 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 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 ORARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO Item 66984 For technical questions please call 1 888 866 5797 Page
7. fumes c Keep bystanders children and visitors away while operating the Page 2 Item 66984 tool Distractions are able to result in the loss of control of the tool Personal safety 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 Loose clothes jewelry or long hair increases the risk of injury to persons as a result of being caught in moving parts Avoid unintentional starting Be sure the switch is off before connecting to the air supply Do not carry the tool with your finger on the switch or connect the tool to the air supply with the switch on Remove adjusting keys and wrenches before turning the tool on Awrench or a key that is left attached to a rotating part of the tool increases the risk of personal injury Do not overreach Keep proper footing and balance at all times Proper footing and balance enables better control of the tool in unexpected situations Use safety equipment A dust mask non skid safety shoes and a hard hat must be used for the applicable conditions Wear heavy duty work gloves during use Always wear eye protection Wear ANSI
8. 13 ASSEMBLY DIAGRAM Record Product s Serial Number Here Note If product has no serial number record month and year of purchase instead Note Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts Item 66984 For technical questions please call 1 888 866 5797 Page 14 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 Item 66984 For technical questions please call 1 888 866 5797 To take advantage of this warranty t
9. CENTRALPNEUMATIC 3 4 Heavy Duty Impact Wrench 66984 Air Impact Wrench AWARNING Read this material before using this product Failure to do so can result in serious injury SAVE THIS MANUAL When unpacking make sure that the product is intact and undamaged If any parts are missing or broken please call 1 888 866 5797 as soon as possible Visit our website at http www harborfreight com Copyright 2011 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 Diagrams within this manual may not be drawn proportionally Due to continuing improvements actual product may differ slightly from the product described herein Tools required for assembly and service may not be included Revised Manual 14c SAVE THIS MANUAL 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 NOTICE is used to NOTICE address practices not related to personal injury CAUTION without CAUTION the safety alert symbol is used to address practices not related to personal injury place for future reference Safety Alert
10. any parts are missing or broken call Harbor Freight Tools at 1 888 866 5797 e This air tool may be shipped with a protective plug covering the air inlet Remove this plug before set up Air Supply TO PREVENT AWARNING 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 1 Incorporate a filter regulator with pressure gauge oiler in line shutoff valve and quick coupler for best service as shown in the air tool setup examples at the end of this section An in line shutoff ball valve is an important safety device because it controls the air supply even if the air hose is ruptured The shutoff valve should be a ball valve because it can be closed quickly Note If an automatic oiler system is not used add a few drops of Pneumatic Tool Oil to the airline connection Page 6 before operation Add a few more while checking the air output gauge drops after each hour of continual to set the right pressure range use 8 Inspect the air connections for leaks Attach an air hose to the Repair any leaks found compressor s air outlet Connect the air hose to the air inlet of the tool Other components such as a connector and quick coupler will make operation more efficient but are not required 9 Ifthe tool will not be used at this time release the Trigger close the shut o
11. ects the tool s operation If damaged have the tool serviced before using Many accidents are caused by poorly maintained tools There is a risk of bursting if the tool is damaged Use only accessories that are identified by the manufacturer for the specific tool model Use of an accessory not intended for use with the specific tool model increases the risk of injury to persons Service Tool service must be performed only by qualified repair personnel When servicing a tool use only identical replacement parts Use only authorized parts Use only the lubricants supplied breakage of the tool or serious injury to persons Use only clean dry regulated compressed air at the rated pressure or within the rated pressure range as marked on the tool Always verify prior to using the tool that the air source has been adjusted to the rated air pressure or within the rated air pressure range Never use oxygen carbon dioxide combustible gases or any bottled gas as an air source for the tool Such gases are capable of explosion and serious injury to persons SAVE THESE INSTRUCTIONS SYMBOLS AND SPECIFIC SAFETY INSTRUCTIONS Symbol Definitions Symbol Property or statement No load speed Revolutions or reciprocation per ES min Pounds per square inch of pressure KN Foot pounds of torque with the tool or specified by the manufacturer BPM Blows per minute Air source Cubic Feet per Minute flow a Never c
12. ed air inlet screen if equipped Air leaking from loose housing hose or connections Mechanism contaminated Vane wear or damage Incorrect lubrication or not enough lubrication Worn parts For technical questions please call 1 888 866 5797 Possible Causes Likely Solutions Decreased output 1 Not enough air pressure and 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 Clean around trigger to ensure free movement Lubricate using air tool oil and grease according to directions Clean air inlet screen of buildup Make sure housing is properly assembled and tight Repair hose connection air leaks Have qualified technician clean and lubricate mechanism Install in line filter in air supply as stated in Initial Set Up Air Supply Replace all vanes Lubricate using air tool oil and grease according to directions Have qualified technician inspect internal mechanism and replace parts as needed Page 12 Possible Causes Likely Solutions Severe air leakage Slight air leakage is normal especially on older tools 1 Cross threaded housing components Loose housing Damaged valve or housing Dirty worn or damaged valve 1 Check for incorrect alignment and uneven gaps If cross threaded disassemble
13. etup JOO je MONE Dulun sul J04 euondo avjeA Bunsnipy y H 311 1a dnoy sasea ou SUOI OSUUOD y9ea sapinold uoeonqn 00 11e JO y oo oy aimsseid me ssnpy O O OoOo o o ooo B O 89910 YJOM JO 00 Hulbewep woy UDJESUBPUOD pue HIP UAB ass AM Oeo SOM IV u0o1d119s9q g sjooL Mi p e nqnj UoN El a sjooL p3 2911qN7 O BO pas m Page 8 For technical questions please call 1 888 866 5797 Item 66984 o ar gt i G Q gt gt i Q o 8 E lt x ayjseiinoo seses esoh O JOO je mo ure Bulun aul J104 amen Bunsnipy y N SUONDBUUOD YDS SAPIAOIA Snid pue sajdno9 N ogm speu 2 O A UORE9HAN 1007 HE JOA A Oo ay alsseld me ssnpy 2 emba 909 10 10M DulPewep WO JOGEA 19 eM SJUDAS IA jeuondo JaAIq Jauea 9 iy esald 40m JO 00 Bulbewep lo uONesuapuos pue HIP sjuaraad OOOO l H asn jo ulod o we sung papuawulo9al LUINWIUIW z L aun Aly youesg 9 wasis Woy SIMSIOL epo O O OOOO BARR saul YOUeIG 0 11e samqlisig pepuswwooel WNWIUIW Y SUN Aly UB 3 UO IJ9NPSJ UOIBAIQIA JOY esoy uonejos Y SOUESIEW 10 WaISAS JO SUO OOS saos O OOO O OOOO RAR O ased ul Ossejduos Je selmss sigo e uoonpa UOIeIGIA pue asiou 104 sped uonelqiA Y uondos q sjooL pa e911qn UON
14. ff valve and detach it from the air supply safely discharge any residual air pressure AWARNING TO PREVENT SERIOUS Note Residual air pressure should not be INJURY FROM ACCIDENTAL present after the tool is disconnected OPERATION from the air supply However itis a good safety measure to attempt to discharge the tool in a safe fashion after disconnecting to ensure that the tool is disconnected and unpowered 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 The air hose must be long enough to reach the work area with enough extra length to allow free movement while working Release the tool s Trigger 39 refer to Operation section for description of controls Close the in line safety valve between the compressor and the tool Turn on air compressor according to manufacturer s directions and allow it to build up pressure until it cycles off Adjust the air compressor s output regulator so that the air output is enough to properly power the tool but the output will not exceed the tool s maximum air pressure at any time Adjust the pressure gradually Item 66984 For technical questions please call 1 888 866 5797 Page 7 Air Tool amp Spray Gun Portable S
15. he 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 verifies 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 specific legal rights and you may also have other rights which vary from state to state Page 15
16. ing use Nicotine reduces the blood supply to the Page 5 hands and fingers increasing the risk of vibration related injury 3 Wear suitable gloves to reduce the vibration effects on the user 4 Use tools with the lowest vibration when there is a choice 5 Include vibration free periods each day of work 6 Grip tool as lightly as possible while still keeping safe control of it Let the tool do the work 7 To reduce vibration maintain tool as explained in this manual If abnormal vibration occurs stop immediately SAVE THESE INSTRUCTIONS FUNCTIONAL DESCRIPTION Specifications Maximum Air Pressure 90 PSI Air Inlet 3 8 18 NPT 3 4 Square Dive Maximum Speed 762 BPM Blows Per Minute Average Air 1000 ft lb Maximum speed at stated maximum air pressure Excess air pressure is hazardous and may cause the tool to exceed stated maximum speed Required Air Hose 1 2 Not Supplied INITIAL TOOL SET UP ASSEMBLY Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this A Rev 14c Item 66984 For technical questions please call 1 888 866 5797 manual including all text under subheadings therein before set up or use of this product Note For additional information regarding the parts listed in the following pages refer to the Assembly Diagram near the end of this manual Unpacking When unpacking make sure the item is intact and undamaged If
17. nd distraction 2 Route air hose along a safe route to reach work area without creating a tripping hazard or exposing air hose to possible damage Also avoid sharp bends and do not place items on hose during use 3 The air hose must be long enough to reach the work area with enough extra length to allow free movement while working 4 There must not be hazardous objects such as utility lines nearby that will present a hazard while working General Operating Instructions 1 WARNING Use only 3 4 Drive Impact type sockets not supplied 2 Ifan automatic oiler is not used add a few drops of Pneumatic Tool Oil to the airline connection before use Add a few drops more after each hour of continual use 3 Push and snap socket not included onto Anvil 8 See Assembly Diagram on page 12 4 This Wrench can be used in either Forward or Reverse direction To operate in Forward turn the Regulator Knob 33 counterclockwise or to the right NOTE There are three torque settings for the Forward direction 5 For Reverse turn the Regulator Knob to clockwise or to the left NOTE There are three torque settings for the Reverse direction 6 To tighten place the socket over the hex nut you wish to tighten For technical questions please call 1 888 866 5797 Page 10 Item 66984 Hold the handle firmly and place other hand on top of Housing 13 Then gently squeeze the Trigger 39 To loosen set the Reg
18. onnect to an air Cubic Feet per Minute flow at SCFM standard conditions source that is capable of exceeding 90 PSI Over pressurizing the tool may cause bursting abnormal operation National pipe thread tapered Chart continued in next column Item 66984 For technical questions please call 1 888 866 5797 Page 4 Symbol Definitions Symbol Property or statement National pipe thread straight WARNING marking concerning Risk of Eye Injury Wear ANSI approved eye protection WARNING marking concerning Risk of Hearing Loss Wear hearing protection WARNING marking concerning Risk of Respiratory Injury Wear NIOSH approved dust mask respirator WARNING marking concerning Risk of Explosion Specific Safet 1 The warnings and precautions discussed in this 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 2 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 8 Safety code 25249 5 et seq 3 Only use with accessories rated to handle the forces exerted by this tool during operation Other accessories not designed for the forces generated may break and forcefully launch pieces Instructions
19. ulator Knob to the Reverse setting Place socket not included over desired nut hold handle firmly and gently squeeze the Trigger If tool requires more force to accomplish task in Forward or Reverse setting verify that the tool receives sufficient unobstructed airflow CFM and increase the pressure PSI output of regulator up to maximum air pressure rating of tool CAUTION TO PREVENT TOOL AND ACCESSORY FAILURE RESULTING IN INJURY Do not exceed tool s maximum air pressure rating 90 PSI If tool still does not have sufficient force at maximum pressure and sufficient airflow then a larger tool may be required When the nut is tightened or loosened release the Trigger To prevent accidents turn off tool detach air supply safely discharge any residual air pressure in tool and release Trigger after use Clean external surfaces of tool with clean dry cloth and apply a thin coat of tool oil to the driver end Store indoors out of children s reach USER MAINTENANCE INSTRUCTIONS Procedures not specifically A explained in this manual For technical questions please call 1 888 866 5797 must be performed only by a qualified technician TO PREVENT AWARNING serious INJURY FROM ACCIDENTAL OPERATION Turn off tool detach air supply safely discharge any residual air pressure in tool and release Trigger before performing any inspection maintenance or cleaning procedures TO PREVENT SERIOUS
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