Harbor Freight Tools 1/2 in. Professional Air Impact Wrench Product manual
Contents
1. 3 9 1 1 Ajddng g 7 For technical questions please call 1 800 444 3353 Impact Wrenches 5 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 while checking the air output gauge to set the right pressure range 6 Inspect the air connections for leaks Repair any leaks found If the tool will not be used at this time 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 to prevent accidental operation 8 For Model 68429 use a wrench not included to attach the Side Handle to the side of the Hammer Frame using the included Screws and Washers Note Residual air pressure should not be present after the tool is disconnected from the air supply However it is a good safety measure to attempt to discharge the tool in a safe fashion after disconnecting to ensure that the tool2. 5100 Ajddng ajqeyiog Impact Wrenches For technical questions please call 1 800 444 3353 Page 6 1078 sasesana ________________ 100 Buun 04 Buysnipy sv N JOO 0 9509 5 09 05 pue _______ 1 4 ________ SCNT S JUSASIq jeuondo JO 00 pue _________ ____________ asn Julod 0 9 epo CNA TIC 4 soul YOUeIG 5 2 sur 3 104 5 sees OOOO O O O nenea soe ujsosseidwoo samos pue 95100 104 sped 5 5100 d
3. Revolutions or reciprocation per minute PSI Pounds per square inch of pressure Foot pounds of torque BPM Blows per minute Cubic Feet per Minute flow Cubic Feet per Minute flow SCFM at standard conditions National pipe thread tapered Chart continued in next column For technical questions please call 1 800 444 3353 Page 3 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 Safety Instructions 1 4 The warnings and precautions discussed 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 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 amp Safety code 25249 5 et seq 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 forceful
4. RT Professional Air Impact Wrench 7 IATH ARTH 68429 1 Impact Wrench With 6 Anvil 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 1 800 444 3353 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 REV 12j 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 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 Safety Alert Symbol and Signal Words In this manual on the labeling and all other information provided with this product This i
5. Components and Controls Regulator Knob Anvil Trigger Air Inlet Models 68423 68424 and 68425 Trigger Regulator Knob Air Anvil Inlet Side Handle Model 68429 Impact Wrenches For technical questions please call 1 800 444 3353 Initial Tool Set Up Assembly Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this 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 Air Supply AWARNING TO PREVENT SERIOUS INJURY FROM EXPLOSION Verify compressoris off before setup 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 on Figure A on page 6 and Figure B on page 7 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 air inlet before operation Add a few more drops after each
6. please call 1 800 444 3353 To loosen set the Regulator 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 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 after use Clean external surfaces of the tool with clean dry cloth and apply a thin coat of tool oil Then store the tool indoors out of children s reach Page 9 User Maintenance Instructions Procedures not specifically explained A in this manual must be performed only by a qualified technician AWARNING TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION Detach the air supply safely discharge any residual air pressure in the tool and release the throttle and or turn the switch to its of
7. 1 33 HammerCage 1 34 2 36 Anvil 12 1 37 O Ring 6 5x2 1 38 Retaining Ring 1 39 Screw M6 20 4 41 O Ring 20 35 178 1 42 Valve Spring 71 43 ValveStem 1 44 RubberSpacer_ 1 35 HammerPin 2 Impact Wrenches 68424 Assembly Diagram Impact Wrenches For technical questions please call 1 800 444 3353 Page 15 68425 Parts List Motor Housing 2 Spring Pin 2220 22 _ 5 4 12 43 1 5 13 Bearing 69002 14 RearEndPlate Cd 15 Rotor 27 Spring Pin 2 525 __ 6_ 6___ 2 Front 1 Bearing 600122 __9_ 1 Regulator 1 23 O Ring 40 1 1 1 1 2 1 3 1 4 1 16 17 18 19 0 1 22 24 25 27 28 30 16 For technical questions please call 1 800 444 3353 Description Screw 5 18 4 J O Ring 3 8 1 9 O Ring 14 1 8 2 1 1 1 1 1 1 1 1 1 Ball Bearing 68922 Rubber Grip 1 Impact Wrenches 68425 Assembly Diagram 76 Impact Wrenches For technical questions please call 1 800 444 3353 Page 17 68429 Parts List Part Description 1 1 6 Reverse Valve Bushing 1 1 8 _ 71 __9 O Ring 7 5x3 5 10 SpringPin 2 41 Gasket 12 Rear Cover 71 13 Ball Bearing 6204 1 14 RearEndPlate 1 15 Rotor __ __1 16 Roto
8. The tool is able to create sparks resulting in the ignition of the dust or fumes c Keep bystanders children and visitors away while operating the tool Distractions are able to result in the loss of control of the tool Personal Safety a 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 b 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 c 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 d 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 Impact Wrenches 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 du
9. hour of continual use 2 Attach an air hose to the compressor s air outlet Connect the air hose to the air inlet of the tool Other components such as a quick connect plug and quick connect coupler will make operation more efficient but are not required AAWARNING TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION Do not install a 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 be hindered by undersized air supply components 3 The air hose must be long enough to reach the work area with enough extra length to allow free movement while working 4 the air compressor according to the manufacturer s directions and allow it to build up pressure until it cycles off Page 5 100 12 104 puysnipy div H 9 saseaou 1 JOO 01 9509 5 29 05 pue 3 00 J04 jeuondo 7 oy ainsseid se Sisnipy 2 2 10 1001 pue pip Suami 2 SO IV 5100
10. is disconnected and unpowered Page 8 For technical questions please call 1 800 444 3353 Operating Instructions Read the ENTIRE IMPORTANT SAFETY INFORMATION 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 AWARNING 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 Do not adjust or tamper with any control or component in a way not specifically explained within this manual Improper adjustment can result in tool failure or other serious hazards 1 Designate a work area that is clean and well lit The work area must not allow access by children or pets to prevent injury and distraction 2 Route air hose along a safe route to reach work area without creating a tripping hazard or exposing the air hose to possible damage The air hose must be long enough to reach work area with enough extra length to allow free movement while working 3 Secure loose workpieces using a vise or clamps not included to prevent movement while working 4 T
11. ECHNICIANS 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 OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO 68423 Parts List 16 6 21 Air Regulator 171 1 Record Product s Serial Number Note Part ____ Q ty 30 O Ring 64 8 1 6 33 35 2 36 37 1 38 1 45 O Ring 15 71 7 52 Retaining Ring RTW 32 1 If product has 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 Page 12 For technical questions please call 1 800 444 3353 Impact Wrenches 68423 Assembly Diagram Impact Wrenches For technical questions please call 1 800 444 3353 Page 13 68424 Parts List Part 24 Page 14 Description ai 1 O Ring 4x1 1 Exhaust Diffuser 1 O Ring 04 50 1 Bearing 60012 1 Rear End Plate 1 Rotor Blade 6 End Plate 1 Bearing 4 1 Regulator 71 O Ring 85 1 For technical questions please call 1 800 444 3353 28 ____ 1 30 O Ring 481 1 31 Gasket 1 32
12. clusion 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 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 RT 3491 Mission Oaks Blvd PO Box 6009 Camarillo 93011 800 444 3353
13. dition that affects 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 a 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 with the tool or specified by the manufacturer Air Source a Never connect to an air source that is capable of exceeding 200 psi Over pressurizing the tool may cause bursting abnormal operation 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
14. ent Incorrect lubrication or Lubricate using air tool oil and grease not enough lubrication according to directions Blocked air inlet screen 4 Clean air inlet screen of buildup if equipped Air leaking from loose housing 5 Make sure housing is properly assembled tight Check for incorrect alignment and uneven gaps Slight air leakage components If cross threaded disassemble and is normal replace damaged parts before use especially on 2 Loose housing Tighten housing assembly If housing cannot tighten older tools properly internal parts may be misaligned 3 Damaged valve or housing Replace damaged components 4 Dirty worn or damaged valve Clean or replace valve assembly Disconnect air supply before service Ae all safety precautions whenever diagnosing or servicing the tool Impact Wrenches For technical questions please call 1 800 444 3353 Page 11 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 T
15. f position before performing any inspection maintenance or cleaning procedures TO PREVENT SERIOUS INJURY FROM TOOL FAILURE Do not use damaged equipment If abnormal noise vibration or leaking air occurs have the problem corrected before further use 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 1 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 2 Weekly Grease Lubrication Lubricate the internal mechanism of the tool using white lithium grease through the grease fittings Page 10 For technical questions please call 1 800 444 3353 Impact Wrenches Troubleshooting Possible Causes Likely Solutions Decreased output 1 Not enough air pressure 1 Check for loose connections and make sure that or air flow air supply is providing enough air flow CFM at required pressure PSI to the tool s air inlet NOTE This is especially important for Model 68429 Do not exceed maximum air pressure Obstructed trigger Clean around trigger to ensure free movem
16. here must not be hazardous objects such as utility lines or foreign objects nearby that will present a hazard while working Impact Wrenches General Operating Instructions 1 Impact Wrenches If an 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 Connect the air hose to the air inlet of the tool Push and snap socket not included onto the Anvil The Impact Wrench can be used in either Forward or Reverse direction a For Models 68423 68424 and 68425 turn the Regulator Knob at the back of the housing to the left NOTE There are three torque settings for the Forward direction For Reverse turn the Regulator Knob to the right NOTE There is one torque setting for the Reverse direction b For Model 68429 turn the Regulator Knob under the Main Handle to the desired Forward speed NOTE There are three torque settings for the Forward direction For Reverse turn the Regulator Knob to the Reverse setting NOTE There is one torque setting for the Reverse direction To tighten place the socket over the nut you wish to tighten 6 Hold the handle firmly and place other hand on top of Housing Then gently squeeze the Trigger NOTE For Model 68429 be sure to hold the Side Handle firmly and keep your other hand around the Main Handle while squeezing the Trigger 7 10 For technical questions
17. is 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 Do not smoke during use Nicotine reduces the blood supply to the hands and fingers increasing the risk of vibration related injury Wear suitable gloves to reduce the vibration effects on the user Use tools with the lowest vibration when there is a choice Include vibration free periods each day of work Grip tool as lightly as possible while still keeping safe control of it Let the tool do the work To reduce vibration maintain tool as explained in this manual If abnormal vibration occurs stop immediately SAVE THESE INSTRUCTIONS Impact Wrenches Functional Description Specifications 90 PSI Air Inlet 68425 3 8 Impact Wrench 68424 1 2 Impact Wrench 68423 3 4 Impact Wrench 68429 1 Impact Wrench Maximum Torque 68425 3 8 Impact Wrench 68424 1 2 Impact Wrench 68423 3 4 Impact Wrench 68429 1 Impact Wrench Average Air Consumption 68425 3 8 Impact Wrench 68424 1 2 Impact Wrench 68423 3 4 Impact Wrench 9 CFM 90 PSI 68429 1 Impact Wrench 10 CFM 90 PSI Maximum torque at stated maximum air pressure Excess air pressure is hazardous and may cause tool failure or injury 1 4 NPT 1 4 NPT 3 8 NPT 1 2 NPT 300 ft lb 11 000 RPM 700 ft Ib 8000 RPM 1400 ft lb 5500 RPM 2000 ft lb 5000 RPM 5 CFM 90 PSI 6 CFM 90 PSI
18. ly launch pieces Attach all accessories properly to the tool before connecting the air supply A loose accessory may detach or break during operation Obey the manual for the air compressor used to power this tool Install an in line shutoff valve to allow immediate control over the air supply in an emergency even if a hose is ruptured Use this tool with both hands only Using tools with only one hand can result in loss of control 10 11 Do not lay the tool down until it has come to a complete stop Moving parts grab the surface and pull the tool out of your control Do not force the tool Use a larger one if needed Use a torque wrench to verify tightness of all fasteners after use Do not hold sockets anvil or adapters during use 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 For technical questions please call 1 800 444 3353 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 th
19. rBlade 17 Spring Pin 6 18 18 Cylinder 19 FrontEndPlate 20 Ball Bearing 62052 21 Air Regulator 22 O Ring 16 8x2 4 Q ty 17 1 1 1 1 1 1 6 10 11 12 13 14 15 16 17 18 19 20 21 22 Page 18 For technical questions please call 1 800 444 3353 ______ i Valve Bushing 1 Screw M8 35 J 1 1 1 1 1 1 1 1 1 1 1 1 Impact Wrenches 68429 Assembly Diagram Impact Wrenches For technical questions please call 1 800 444 3353 Page 19 Limited 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 ex
20. s 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 DANGER indicates 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 NOTICE NOTICE is used to address practices not related to personal injury CAUTION CAUTION without the safety alert symbol is used to address practices not related to personal injury Page 2 For technical questions please call 1 800 444 3353 IMPORTANT SAFETY INSTRUCTIONS INSTRUCTIONS PERTAINING 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 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 Do not operate the tool in explosive atmospheres such as in the presence of flammable liquids gases or dust
21. ty work gloves during use Always wear eye protection Wear ANSI 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 a Impact Wrenches 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 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 con
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