3/8in. BUTTERFLY IMPACT WRENCH USER`S MANUAL
Contents
1. WARNING e dust createdby power sanding sawing grinding drilling and other construction activities contains chemicals known to the State of Californiato cause cancer birth defects or otherreproductive harm Someexamples of thesechemicals are lead from lead based paints crystalline silica frombricks and cementand other masonry products and arsenic and chromiumfrom chemically treatedlumber Yourrisk from these exposures varies dependingon how oftenyou do thistype of work Toreduce your exposureto these chemicals work in awell ventilated area andwork with approved safety equipment such as those dust masks thatare specially designedto filter out microscopic particles WEL BILTs Distributed by Northern Tool Equipment Co Inc 2800 Southcross Drive West Burnsville MN 5337 0499 Made in China 6 of 6 3 8in BUTTERFLY IMPACT WRENCH USER S MANUAL ZAwar nine Read carefully andunderstand all INSTRUCTIONS before operating Failureto follow the safety rulesand other basic safety precautions mayresult in serious personalinjury Item 139272 can damage thetool You may haveto use penetrating oil heat ora mechanical wrench to remove the fastener 13 When youare finished usingthis tool turnoff the air compressor anddisconnect the air hose Putthe Airlmpact Wrench away in its proper storage place MAINTENANCE 1 Your Airlmpact Wrench should be keptclean and dry 2 When notin use store2. care Keep toolsclean and ingood condition forbetter and safer performance Follow instructions for lubricating andchanging accessories Inspecttool fittings and hoses periodically and ifdamaged have themrepaired by anauthorized technician The handles must be kept clean dry and freefrom oil andgrease at alltimes 10 Disconnect power Disconnect fromair pressure source when not inuse 11 Removeadjusting keys andwrenches Check thatkeys and adjustingwrenches are removed from thetool or machinework surface beforeconnecting it 12 Avoid unintentional starting Be surethe Butterfly Throttle Switch isin the neutral OFF position when not in useand before connectingto pressure source Do not carry any tool with yourfinger on the Butterfly Throttle Switch whether itis attached ornot 13 Check fordamaged parts Before usingany tool any part that appears damaged should be carefully checked to determine that it willoperate properly and perform its intended function Checkfor alignment andbinding of movingparts any brokenparts or mounting fixtures andany other conditionthat may affect proper operation Any partthat is damaged shouldbe properly repairedor replaced bya qualified technician Do not use the tool ifthe Butterfly Throttle Switch doesnot function properly 14 Guard againstelectric shock whenworking on electricalequipment such as your air compressor Prevent body contactwith grounded surfaces such as pipes radiators ranges andrefrigerator enclos
3. your tool ina suitable place where it willnot be exposedto water corrosive materials orundue banging around 3 lf youare not usingan in line oiler you shouldinject a fewdrops of pneumatictool oil into the airinlet of thetool and theoiler screw portafter every hourof continuous use 4 lf yourtool loses power or you notice air leaks take it toa certified technician for service 5 All repairs tothis tool shouldbe performed bya qualified service technician For technical questionsand replacement parts please call 1 800 222 5381 Thank you very much for choosinga Wel Bilt Product Forfuture reference please complete the owner srecord below Model Purchase Date Save the receipt warranty and theseinstructions It isimportant that youread the entire manual to become familiar with this product before using it This machine isdesigned for certain applications only The distributor strongly recommends that this machine is notmodified and or usedfor any applicationother than that for whichit was designed If you haveany questions relativeto a particular application DO NOT use the machineuntil you have first contacted Northern Tool Equipment to determine if it canor should be performed on the product Before using this product please readthe following instructions carefully TECHNICAL SPECIFICATIONS Item Description Item Description Square Drive 3 8in Air Inlet Diameter 1 4in 18NPT Free Speed 10 0
4. 00 RPM Min Hose Size 3 8in Max Torque 75 ft Ibs Max air pressure 90 PSI Air Consumption 6 CFM PART LIST Part Description Qty Part Description Qty 1 Housing 1 22 Back Cap 1 2 Oiler Screw 1 23 Spring 2 3 Throttle Lever 1 24 Valve Seat 2 4 Anvil Bushing 1 25 O ring 2 5 Socket Retaining Ring 1 26 Spring 2 6 O ring 1 27 Plunger 2 7 Anvil 1 28 O ring 2 8 Hammer Pin 1 29 O ring 1 9 Hammer Cage 1 30 Air Inlet Block 1 10 Hammer Dog 1 31 Spring 1 qli Cam 1 32 Steel Ball 1 12 Oil Seal 2 oc Regulator 1 13 Ball Bearing 34 Throttle Pin 2 14 Front End Plate 1 35 Washer 1 115 Rotor Blade 6 36 Retainer Ring 1 16 Rotor 1 37 Spring Washer 4 17 Cylinder 1 38 Cap Screw 4 18 Rear End Plate 1 39 Rubber Nose Guard 1 19 Spring Pin 1 40 Retainer Plate 1 20 Ball Bearing 1 41 Screw 2 21 Back Cap Gasket 1 4of6 SAVE THIS MANUAL You will need this manual for the safety warnings andprecautions assembly operating inspection maintenance andcleaning procedures partslist and assembly diagram Keep this manual andinvoice in asafe and dryplace for futurereference SAFETY WARNINGS WARNING When usingtool basic safety precautions should always be followed to reducethe risk of personal injury anddamage to equipment 1 Keep workarea clean Cluttered areasinvite injuries 2 Observe workarea conditions Do notuse machines orpower tools indamp or wet locations Do
5. g 1 20f6 1 Install astandard 1 4 Air Connector notincluded to the Air Inlet First wrap the threaded portion ofthe 1 4 airconnector with pipethread seal tape before threading it into the Air Inlet Tighten securely 2 Attach astandard quick connector not included toyour 3 8 airpressure source hose Then attach the air hose tothe Airlmpact Wrench NOTE If you arenot using anautomatic in line oiler add afew drops of pneumatic oil to the AirInlet before attachingthe air hose Add afew more drops of oil afterevery hour of continual use 3 Set theair pressure regulatoron your aircompressor at 90PSI WARNING Do not exceedthe recommended pressure of 90 PSI Damage to your tool and possible personal injury and or property damage mayresult 4 Check theair line andits connections forair leaks Makenote of these and repair them before using thistool NOTE Turn offyour air compressor and disconnect theair pressure hose before changing sockets ormaking any adjustmentsto this tool Severe injury orproperty damage may otherwiseresult A WARNING This tool generates considerable torque whenin use Always hold the tool with both hands when using and brace yourselfto resist the torque which willbe delivered to the workpiece 5 Select the appropriate size 3 8 square drive impact socket not included for your needs Push andsnap the socketonto the anvil Note Impact Sockets mustbe rated for10 000 RPM orgreater 6 Set thedirection of the A
6. ir Impact Wrench to FORWARD or REVERSE By moving the Throttle Lever Butterfly tothe right youare setting the tool to operate FORWARD You may control the amount of torqueto be appliedby rotating the Regulator There are settings from 1 through 8 indicatingincreasing torque Rockthe Throttle Lever Butterfly to the leftto REVERSE thedirection of thetool NOTE In this manual FORWARD refers to clockwiserotation and REVERSE refers to counterclockwise rotationof the Anvil Alwaysbe aware ofthe direction ofthe threading of the fasteneryou are workingon While mostfasteners install withclockwise rotation some threads areintentionally the reverse REVERSE FORWARD Throttle Lever Butterfly NOTE The actual torquedelivered at eachof the eightsettings will dependon the air pressure supplied tothe tool We suggest that you test the actual torque bytightening a nut or boltat each setting then observing theresultant torque by using a mechanical torque wrench notsupplied 7 1f installinga nut orbolt set itas tight as possible by handbefore tightening withthe Air Impact Wrench 8 Place thesocket not included over the fastener 9 Grip the Air Impact Wrench tightly with both hands and rock the Throttle Lever Butterfly to the right The tool will operate and tighten the fastener 10 When the fastener is tightened release the Throttle Lever Butterfly and remove the tool from the fastener 11 1f possible checkthe actual torque applied t
7. n t exposeto rain Keepwork area welllit Do notuse electrically powered tools in the presence of flammable gases or liquids 3 Keep bystanders pets and children away Do notlet unauthorized people handle machines tools orextension cords 4 Store idleequipment When notin use tools must be storedin a dry location to inhibit rust Alwayslock up tools and keep outof reach ofchildren 5 Use theright tool forthe job Do notattempt to forcea small toolor attachment todo the work ofa larger industrialtool There are certain applications for which this tool was designed It willdo the jobbetter and moresafely at therate for whichit was intended Do not modify thistool and donot use thistool for apurpose for whichit was notintended 6 Dress properly while working Do notwear loose clothing or jewelry asthey can be caught in moving parts Protective electrically non conductive clothes andnon skid footwear are recommendedwhen working Wear restrictive haircovering to containlong hair 7 Use eye face and ear protection Alwayswear ANSI approvedimpact safety goggles Wear afull face shieldif you are producing metal filings or wood chips Wear an ANSI approved dust maskor respirator when working around metal wood and chemical dusts and mists Wear ANSI approvedear plugs 8 Do notoverreach Keep proper footing and balance at all times Do not reachover or across running machines 1 of 6 DIAGRAM 9 Maintain tools with
8. o the fastener with amechanical torque wrench not supplied 12 lf removinga fastener grip the Air Impact Wrench tightly with both hands androck the Throttle Lever Butterfly to the left The tool will operate andloosen the fastener assuming that thefastener is astandard right hand thread NOTE Always check tobe sure ofthe thread directionof any fastenerbefore attempting to install orremove it Ifthe fastener isa left hand thread rock the Throttle Lever Butterfly to the right for removal IN WARNING If the fastener will not comeoff first checkthe direction ofthe thread If youhave the threaddirection correct andthe fastener willstill not come off DO NOTINCREASE THE AIR PRESSURE tothe tool beyond 90 PSI This 30f6
9. ures 15 Replacement partsand accessories When servicing use only identical replacement parts Useof any otherparts will voidthe warranty Only use accessories intended for usewith this tool 16 Do notoperate tool ifunder the influence of alcohol ordrugs or ifyou are tired This may resultin serious injury 17 Use propersize and typeair pressure lineand fittings The recommended air line for this toolis 3 8 deliveringno more than90 PSI Recommendedair inlet sizeis 1 4 18 NPT 18 Maintenance For yoursafety service and maintenance should be performed regularly by aqualified technician 19 You should maintaina proper regulatorand moisture trapin your airline at all times Note Performance ofthis tool mayvary depending onvariations in localair pressure Z WARNING The warnings cautions and instructions discussedin this instruction manual cannot coverall possible conditionsand situations thatmay occur lt must be understood by the operator that commonsense and cautionare factors whichcannot be built into this product but mustbe supplied bythe operator A WARNING The brass components of this productcontain lead achemical known to the State of Californiato cause birthdefects or otherreproductive harm California Health amp Safety code 25249 5 et seq ASSEMBLY AND OPERATING INSTRUCTIONS Hose Line Oiler 5 Filter 7a COMPRESSOR Air Hose gt on Reel Reguiator Recommended Air Line Components Fi
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