John Deere ET-3302-J User's Manual
Contents
1. Turn the disc grinder upsidedown so that the spindle is facing upward To mount the wheel guard on the grinder 4 5 first slip the set A over the guard Guard mounting flange so locating pin fits in the guard locating groove then twist guard oe the groove into a proper angle so the guard Wheel IA will protect the operator s body from injury Wheel Janding by a broken wheel piece Tighten the screw in the set ring A of guard To mount a grinding wheel on the grinder xo Nut first align the oval shaped indentation of the wheel w S wheel washer with the notched part of the spindle then attach them Fit the protuberance of the grinding wheel onto the wheel washer Fig 2 Screw the wheel nut onto the spindle While pushing the lock button with one hand lock the spindle by turning the grinding wheel slowly with the other hand Tighten the wheel nut by using the supplied wrench as shown in Fig 2 Lock Button Wrench For use as a sander After placing the Sanding disc on the rubber pad insert the washer nut through the spindle While pushing the lock button with one hand lock the spindle by turning the sanding disc slowly with the other hand Secure the sanding disc and rubber pad by tightening the washer nut with the wrench SURE THAT THE GRINDING WHEEL THE SANDING DISC OR RUBBER PAD ARE MOUNTED FIRMLY 3 Disassembling To remove th2. only genuine JOHN DEERE replacement parts should be installed Clean the exterior of the power tool only with a soft cloth moistened with soapy water and dry thoroughly Never use solvents gasoline or thinners on plastic components otherwise the plastic may dissolve 7 Inch Disc Grinder Operator s Manual IMPORTANT SAFETY INSTRUCTIONS FOR USE OF THE DISC GRINDER Bonnin DEATH OR SERIOUS BODILY INJURY COULD RESULT FROM IMPROPER OR UNSAFE USE OF THE DISC GRINDER NEVER operate the disc grinder without its wheel guard in place NEVER place hands or body parts near the disc during operation NEVER use a grinding wheel which is cracked or deformed or worn away NEVER use a grinding wheel with an RPM rating which is less than 6600 RPM The wheel can disintegrate during use and cause severe injuries NEVER use the grinder in places where the sparks generated by the grinder can cause explosion such as where flammable materials or gases are present ALWAYS wear eye protection that meets the requirement of the latest revision of ANSI Standard 487 1 ALWAYS wear a mask or respirator to protect yourself from dust or potentially harmful particles generated during the grinding operation ALWAYS firmly grip the body handle and side handle while operating the grinder ALWAYS follow the instructions contained in this manual when replacing the grinding wheel REPLACEMENT PARTS When servicing use only identical replacement
3. parts Repairs should be conducted only by an AUTHORIZED JOHN DEERE DEALER SAVE THESE INSTRUCTIONS AND MAKE THEM AVAILABLE TO OTHER USERS AND OWNERS OF THIS TOOL 10 7 Inch Disc Grinder Operator s Manual Functional Description MODEL ET 3302 J 7 INCH DISC GRINDER NOTE The information contained in this Instruction Manual is designed to assist you in the safe operation and maintenance of the power tool NEVER operate or attempt any maintenance on the tool unless you have first read and understood all safety instructions contained in this manual Some illustrations in this Instruction Manual may show details or attachments that differ from those on your own power tool NAME OF PARTS Name Plate Handle Lock Button Tool Rest Gear Cover Brush Holder Brush Cap Side Handle Grinding Wheel Wheel Guard Fig 1 SPECIFICATIONS 7 INCH DISC GRINDER 3302 Motor Single Phase Series Wound Commutator Motor Power Source Single Phase 115V AC 60Hz Input 1 640W No Load Speed USA 6 000 rpm No Load Speed Canada 8 500 rpm Wheel Size external diam 7 180mm internal diam 7 8 22mm Sanding Disc Size external diam 7 180mm internal diam 7 8 22mm Spindle Thread 5 8 11 UNC Weight 11 Ibs 5 0kg 7 Inch Disc Grinder Operator s Manual Assembly ASSEMBLY Avr BE SURE TO SWITCH POWER OFF AND DISCONNECT THE PLUG FROM THE RECEPTACLE TO AVOID SERIOUS TROUBLE Assembling a b
4. 0 as shown in Fig 3 b CAUTION DO NOT UTILIZE THE ENTIRE SURFACE OF SANDING DISC WHEN SANDING 7 Inch Disc Grinder Operator s Manual 15 Maintenance and Inspection MAINTENANCE AND INSPECTION WARNING BE SURE TO SWITCH POWER OFF AND DISCONNECT THE PLUG FROM THE RECEPTACLE DURING MAINTENANCE AND INSPECTION Replacing the grinding wheel Replace the grinding wheel when it has been worn out to about 2 3 8 60mm in external diameter Confirm that there is no crack or any damage to the grinding wheel If there is a crack or a transformation in the wheel replace it immediately 2 Inspecting the mounting screws Regularly inspect all mounting screws and ensure that they are properly tightened Should any of the screws be loosened retighten them immediately WARNING USING THIS GRINDER WITH LOOSE SCREWS IS EXTREMELY DANGEROUS 3 Confirm that there is no damage in the wheel guard the cord and the housing etc Furthermore confirm that there is no abnormality in the activation of the switch No of carbon Wear limit 4 Inspecting the carbon brushes Fig 4 The motor employs carbon brushes which are consumable parts Replace the carbon brush 0 24 6mm with a new one when it becomes worn to its wear limit Always keep carbon brushes clean 0 67 17mm and ensure that they slide freely within the brush holders Fig 4 CAUTION USING THIS GRINDER WITH A CARBON BRUSH WHICH IS WORN IN EXCESS OF THE WEAR LIMIT
5. 16 17 MAINTENANCE AND INSPECTION 16 SERVICE AND REPAIRS 17 STANDARD ACCESSORIES 17 NOTES sbsabsooassaneacssndeiad 18 19 7 Inch Disc Grinder Operator s Manual 3 Safety RECOGNIZE SAFETY INFORMATION This is the safety alert symbol When you see this symbol on your tool or in this manual be alert to the potential for personal injury Follow recommended precautions and safe operating practices UNDERSTAND SIGNAL WORDS DANGER WARNING or CAUTION safety warning will be surrounded by SAFETY ALERT BOX This box is used to designate and emphasize Safety Warnings that must be followed when operating this tool AWARNING ACAUTION Accompanying the Safety Warnings are signal words which designate the degree or level of hazard seriousness The signal words used this manual are as follows DANGER Indicates an imminently hazardous situation which if not avoided WILL result in death or serious injury WARNING Indicates a potentially hazardous situation which if not avoided COULD result in death or serious injury CAUTION Indicates a potentially hazardous situation which if not avoided MAY result in minor or moderate injury GENERAL SAFETY RULES Read and understand all instructions Failure to follow all instructions listed below may result in electric shock fire
6. ET 3302 J 7 INCH GRINDER JOHN DEERE OPERATOR S MANUAL CAUTION RISK OF INJURY READ MANUAL BEFORE OPERATING THIS MANUAL IS AN IMPORTANT PART OF THE DISC GRINDER AND SHOULD REMAIN WITH THIS UNIT WHEN YOU SELL OR RENT IT Introduction Congratulations on the purchase of your new disc grinder You can be assured your grinder was constructed and designed with quality and performance in mind Each component has been rigorously tested to ensure the highest level of acceptance This operator s manual was compiled for your benefit By reading and following the simple safety installation operation maintenance and troubleshooting steps described in this manual you will receive years of trouble free operation from your new tool The contents of this manual are based on the latest product information available at the time of publication The manufacturer reserves the right to make changes in price color materi als equipment specifications or models at any time without notice Once the unit has been removed from the box immediately write in the serial number of your unit in the space provided below SERIAL NUMBER Inspect for signs of obvious or concealed freight damage If damage does exist file a claim with the transportation company immediately Be sure that all damaged parts are replaced and that the mechanical problems are corrected prior to operation of the unit If you require service contact your Customer Servic
7. HE MOTOR 7 Inch Disc Grinder Operator s Manual Operation OPERATION CONTINUED 3 Grinding angle Use only its peripheral surface by tilting the grinding wheel at an angle of 15 30 as shown Fig 3 a CAUTION DO NOT UTILIZE THE ENTIRE SURFACE OF GRINDING WHEEL WHEN GRINDING 4 When using a new grinding wheel in direction Fig 3 a the wheel edge may cut into the workplace In this case grind in direction B Fig 3 a Once the wheel edge is worn the workpiece can be ground in both directions The provided grinding wheel resinoid wheel is rated as class A grain and 24 grain size Therefore it is most appropriate for heavy grinding of general steel materials It is also suitable for grinding other types of materials For a fine finish lift the disc grinder slightly and grind slowly at the appropriate speed 5 Precaution after use Do not lay the grinder down immediately after use in a place where there are many shavings and much dirt and dust until it has completely stopped revolving FOR USE AS A SANDER 1 Do not push the sanding disc to the surface to be ground Aw DO NOT PRESS THE DISC GRINDER FORCIBLY AGAINST THE PLANE TO BE GROUND HEAVY PRESSURE WILL REDUCE THE REVOLVING SPEED AND SUCH DETERIORATE THE FINISHED SURFACE AND PHENOMENA AS OVERLOAD WILL LEAD TO BURNING LOSS OF THE MOTOR Sanding angle Use only it peripheral surface by tilting the sanding disc at an angle of 15 0 3
8. R WORK AREA ENVIRONMENT Don t expose power tools to rain Don t use power tools in damp or wet locations Keep work area well lit and well ventilated Don t use tool in presence of flammable liquids or gases Power tools produce sparks during operation They also spark when switching ON OFF Never use power tools in sites containing lacquer paint benzine thinner gasoline gases adhesive agents and other materials which are combustible or explosive KEEP CHILDREN AWAY Do not let visitors contact tool or extension cord All visitors should be kept safely away from work area 7 Inch Disc Grinder Operator s Manual AWARNING DRESS PROPERLY Do not wear loose clothing or jewelry They can be caught in moving parts Rubber gloves and non skid footwear are recommended when working outdoors Wear protective hair covering to contain long hair USE FACE DUST MASK OR RESPIRATOR IF OPERATION IS DUSTY All persons in the area where power tools are being operated should also wear face dust mask or respirator SECURE WORK Use clamps or a vise to hold work It s safer than using your hand and it frees both hands to operate tool DON T OVERREACH Keep proper footing and balance at all times STAY ALERT Watch what you are doing Use common sense Do not operate tool when you are tired Tools should never be used by you if you are under the influence of alcohol drugs or medication that makes you drowsy HANDLE TOOL CO
9. RRECTLY Operate the tool according to the instructions provided herein Do not drop or throw the tool Never allow the tool to be operated by children individuals unfamiliar with its operation or unauthorized personnel CHECK FOR LIVE WIRES Avoid the risk of severe electrical shock by checking for live electrical wires that may be buried in walls floors or ceilings The circuit to the wires should be disconnected before work begins DO NOT USE POWER TOOLS IF THE PLASTIC HOUSING OR HANDLE IS CRACKED Cracks in the tool s housing or handle can lead to electric shock Such tools should not be used until repaired BLADES AND ACCESSORIES MUST BE SECURELY MOUNTED TO THE TOOL Prevent potential injuries to youself or others Blades cutting implements and accessories which have been mounted to the tool should be secure and tight NEVER LEAVE TOOL RUNNING UNATTENDED Turn power off Don t leave tool until it comes to a complete stop 6 7 Inch Disc Grinder Operator s Manual ACAUTION STORE TOOL PROPERLY When not in use the tool should be stored in a dry place Keep out of reach of children Lock out the storage area KEEP WORK AREA CLEAN Cluttered areas and benches invite injuries Clear all work areas and work benches of unnecessary tools debris furniture etc DON T FORCE TOOL It will do the job better and safer at the rate for which it was intended USE RIGHT TOOL Don t force small tool or attachment to do the job of a
10. WILL DAMAGE THE MOTOR Use JOHN DEERE carbon brush No 44 indicated in Fig 4 Replacing carbon brushes Remove the brush caps Fig 1 with a slotted screwdriver The carbon brushes can then be easily removed 16 7 Inch Disc Grinder Operator s Manual Maintenance and Inspection SERVICE AND REPAIRS All quality power tools will eventually require servicing or replacement of parts because of wear from normal use To assure that only authorized replacement parts will be used all service and repairs must be performed by a JOHN DEERE AUTHORIZED DEALER ONLY WARNING ACCESSORIES FOR THIS POWER TOOL ARE MENTIONED IN THIS INSTRUCTION MANUAL THE USE OF ANY OTHER ATTACHMENT OR ACCESSORY CAN BE DANGEROUS AND COULD CAUSE INJURY OR MECHANICAL DAMAGE STANDARD ACCESSORIES Wrench 1 Side Handle 1 Hexagon Bar Wrench 1 NOTE Accessories are subject to change without any obligation on the part of JOHN DEERE 7 Inch Disc Grinder Operator s Manual 17 18 Notes 7 Inch Disc Grinder Operator s Manual 7 Inch Disc Grinder Operator s Manual Notes 37 0696 090403 Copyright 2003 John Deere Manufactured for Deere amp Company Moline Illinois 61265 7 Inch Disc Grinder Operator s Manual 110 Code 99110961
11. and or serious personal injury SAVE THESE INSTRUCTIONS 4 7 Inch Disc Grinder Operator s Manual NEVER TOUCH MOVING PARTS Never place your hands fingers or other body parts near the tool s moving parts NEVER OPERATE WITHOUT ALL GUARDS IN PLACE Never operate this tool without all guards or safety features in place and in proper working order If maintenance or servicing requires the removal of a guard or safety feature be sure to replace the guard or safety feature before resuming operation of the tool ALWAYS WEAR EYE AND EAR PROTECTION Protect yourself from flying or expelled wood chips metal particles or other debris by using protective goggles or equivalent eye protector Wear ear protector to protect yourself from excessive noise PROTECT YOURSELF AGAINST ELECTRIC SHOCK Prevent body contact with grounded surfaces such as pipes radiators ranges and refrigeration enclosures Never operate the tool in damp or wet locations DISCONNECT TOOLS Never leave the tool connected to a power source Always disconnect the tool from its power source before servicing inspecting maintaining cleaning and before changing or checking any parts AVOID UNINTENTIONAL STARTING Don t carry the tool while it is connected to its power source Don t carry the tool with your finger near the power switch Be sure the power switch is in the off position before connecting the tool to its power source CONSIDE
12. e Mi T M Corporation 8650 Enterprise Drive Peosta 52068 1 877 JD KLEEN 1 877 535 5336 Fax 563 556 1235 Monday Friday 8 00 a m 5 00 p m CST Please have the following information available for all service calls 1 Model Number 2 Serial Number 3 Date and Place of Purchase AWARNING WEAR RESPIRATORY PROTECTION Some dust created by power sanding sawing grinding drilling and other construction activities contain chemicals known to the State of California to cause cancer birth defects or other reproductive harm Some examples of these chemicals are Lead from lead base paints Crystalline Silica from bricks cement and other masonry products and Arsenic and Chromium from chemically treated lumber Your risk from these exposures varies depending on how often you do this type of work To reduce your exposure to these chemicals work in a well ventilated area and work with approved safety equipment such as those dust masks that are specially designed to filter out microscopic particles 2 7 Inch Disc Grinder Operator s Manual Table of Content NAME OF PARTS SPECIFICATIONS 12 lt 5555 nasaia aaaeaii APPLICATIONS PRE OPERATION OPERATION MAINTENANCE AND INSPECTION
13. e wheel guard the grinding wheel the sanding disc follow the above mentioned procedure in reverse order 12 7 Inch Disc Grinder Operator s Manual Operation APPLICATIONS FOR USE AS A GRINDER Removal of casting fin and finishing of various types of steel bronze and aluminum materials and castings Grinding of welded sections or sections cut by means of welding Grinding of synthetic resins slate brick marble etc FOR USE AS A SANDER Preliminary sanding of metal surfaces before painting rust removal removing oil paint before repainting Finishing woodwork correcting projections of timbers from joints or assemblies Preliminary sanding of wood surfaces before applying paint PRE OPERATION 1 Power source Ensure that the power source to be utilized conforms to the power source requirements specified on the product nameplate Power switch Ensure that the switch is in the OFF position If the plug is connected to a receptacle while the switch is in the ON position the power tool will start operating immediately and can cause serious injury Extension cord When the work area is far away from the power source use an extension cord of sufficient thickness and rated capacity The extension cord should be kept as short as possible Check the receptacle If the receptacle only loosely accepts the plug the receptacle must be repaired Contact a licensed electrician to make appropriate repairs If
14. heavy duty tool Don t use tool for purpose not intended for example don t use circular saw for cutting tree limbs or logs DON T ABUSE CORD Never carry tool by cord or yank it to disconnect from receptacle Keep cord from heat oil and sharp edges SECURE WORK Use clamps or a vise to hold work It s safer than using your hand and it frees both hands to operate tool MAINTAIN TOOLS WITH CARE Keep tools sharp and clean for better and safer performance Follow instructions for lubricating and changing accessories Inspect tool cords periodically and if damaged have repaired by an authorized dealer Inspect extension cords periodically and replace if damaged Keep handles dry clean and free from oil and grease REMOVE ADJUSTING KEYS AND WRENCHES Keys and adjusting wrenches remove from tool before turning it on OUTDOOR USE EXTENSION CORD When tool is used outdoors use only extension cord intended for use outdoors and so marked CHECK DAMAGED PARTS Before further use of the tool a guard or other part that is damaged should be carefully checked to determine that it will operate properly and perform its intended function Check for alignment of moving parts binding of moving parts breakage of parts mounting and any other conditions that may affect its operation A guard or other part that is damaged should be properly repaired or replaced by an authorized dealer unless otherwise indicated elsewhere in this Instruction Manua
15. l Have defective switches replaced by the authorized dealer Do not use tool if switch does not turn it on and off NEVER USE A POWER TOOL FOR APPLICATIONS OTHER THAN THOSE SPECIFIED Never use a power tool for applications other than those specified in the Instruction Manual 7 Inch Disc Grinder Operator s Manual 7 HANDLE TOOL CORRECTLY Operate the tool according to the instructions provided herein Do not drop or throw the tool Never allow the tool to be operated by children individuals unfamiliar with its operation or unauthorized personnel KEEP ALL SCREWS BOLTS AND COVERS TIGHTLY IN PLACE Keep all screws bolts and plates tightly mounted Check their condition periodically KEEP MOTOR AIR VENT CLEAN The tool s motor air vent must be kept clean so that air can freely flow at all times Check for dust build up frequently OPERATE POWER TOOLS AT THE RATED VOLTAGE Operate the power tool at voltages specified on its nameplate If using the power tool at a higher voltage than the rated voltage it will result in abnormally fast motor revolution and may damage the unit and the motor may burn out NEVER USE A TOOL WHICH IS DEFECTIVE OR OPERATING ABNORMALLY If the tool appears to be operating unusually making strange noises or otherwise appears defective stop using it immediately and arrange for repairs by a JOHN DEERE AUTHORIZED DEALER CAREFULLY HANDLE POWER TOOLS Should a power tool be dropped or s
16. nd nameplate ampere rating If in doubt use the next heavier gage The smaller the gage number the heavier the cord MINIMUM GAGE FOR CORD SETS Total Length of Cord in Feet Meter 0 25 26 50 51 100 101 150 0 7 6 7 9 15 2 15 5 30 5 30 8 45 7 Ampere Rating AWG More Not More Than Than 0 6 18 16 16 14 6 10 18 16 14 12 10 12 16 16 14 12 12 16 14 12 Not Recommended an AVOID ELECTRICAL SHOCK HAZARD NEVER USE THIS TOOL WITH A DAMAGED OR FRAYED ELECTRICAL CORD OR EXTENSION CORD INSPECT ALL ELECTRICAL CORDS REGULARLY NEVER USE IN OR NEAR WATER OR IN ANY ENVIRONMENT WHERE ELECTRIC SHOCK IS POSSIBLE DOUBLE INSULATION FOR SAFER OPERATION To ensure safer operation of this power tool JOHN DEERE has adopted a double insulation design Double insulation means that two physically separated insulation systems have been used to insulate the electrically conductive materials connected to the power supply from the outer frame handled by the operator Therefore either the symbol B or the words Double insulation appear on the power tool or on the nameplate Although this system has no external grounding you must still follow the normal electrical safety precautions given in this Instruction Manual including not using the power tool in wet environments To keep the double insulation system effective follow these precautions a Only a AUTHORIZED JOHN DEERE DEALER should disassemble or assemble this power tool and
17. s Duration of the trial run is as follows When grinding wheel is replaced 3 minutes or more When starting daily work 1 minute or more Use only properly rated grinding wheels Use only grinding wheels rated at 6600 RPM or more Using a grinding wheel rated less can lead to wheel disintegration during operation and serious bodily injury Check the spindle lock Make sure that the lock button is disengaged by pushing lock button two or three times before turning on the grinder Switch Operation This enables the grinder always to be controlled with the hand gripping the machine for maximum safety during grinding operations INTERMITTENT USE Switch ON Press the switch lever Switch OFF Release the switch lever CONTINUOUS USE Switch ON Press the switch lever The switch is locked by pulling the lock button Switch OFF Press and release the switch lever OPERATION 1 Always hold the handle and side handle of the POWER TOOL firmly Otherwise the counterforce produced may result in inaccurate and even dangerous operation Grinding Pressure Since grinding by utiliing only the Disc Grinder s won weight is feasible hold the Disc Grinder so that it only slightly contacts the plane to be ground PLANE TO BE GROUND HEAVY PRESSURE WILL REDUCE PT DO NOT PRESS THE DISC GRINDER FORCIBLY AGAINST THE 14 THE REVOLVING SPEED AND SUCH DETERIORATE THE FINISHED SURFACE AND PHENOMENA AS OVERLOAD WILL LEAD TO BURNING LOSS OF T
18. such a faulty receptacle is used it may cause overheating resulting in a serious hazard Check your working environment Ensure the following before operation No flammable gas liquid or object at worksite Grinding thin steel sheet may cause a high booming sound In this case place a rubber mat under the workpiece Take appropriate noise preventive measures to prevent adverse affects on the environment by electrical noise Clear the area of children or unauthorized personnel Mounting the wheel guard Be sure to mount the wheel guard at an angle that will protect the operator s body from injury by a broken wheel piece WARNING IF NOT CORRECTLY ATTACHING A PROPER WHEEL GUARD IT MAY LEAD TO SEVERE INJURY OR DEATH IF THE GRINDING WHEEL SHOULD BE BROKEN 7 Inspect the grinding wheel carefully before mounting Thoroughly check that a specified grinding wheel free of cracks and splits is mounted Make sure that the grinding wheel is firmly clamped and has been mounted in accordance with the instructions contained on page 12 7 Inch Disc Grinder Operator s Manual 13 PRE OPERATION CONTINUED 8 Test the grinder before using Before actually beginning the grinding work test the grinder by first clearing the area of all other personnel Make sure the wheel guard is in place and that you are wearing eye protection Turn the grinder and make sure the grinder runs smoothly and shows no abnormalitie
19. truck against hard materials inadvertently it may be deformed cracked or damaged DO NOT WIPE PLASTIC PARTS WITH SOLVENT Solvents such as gasoline thinner benzine carbon tetrachloride and alcohol may damage and crack plastic parts Do not wipe them with such solvents Wipe plastic parts with a soft cloth lightly dampened with soapy water and dry thoroughly USE ONLY GENUINE JOHN DEERE REPLACEMENT PARTS Replacement parts not manufactured by JOHN DEERE may void your warranty and can lead to malfunction and resulting injuries Genuine JOHN DEERE parts are available from your dealer POLARIZED PLUGS To reduce the risk of electric shock this equipment has a polarized plug one blade is wider than the other This plug will fit in a polarized outlet only one way If the plug does not fit fully in the outlet reverse the plug If it still does not fit contact a qualified electrician to install the proper outlet Do not change the plug in any way USE ONLY GRINDING WHEELS HAVING A MAXIMUM OPERATING SPEED AT LEAST HIGH AS 6600 RPM 8 7 Inch Disc Grinder Operator s Manual USE EXTENSION CORD Make sure your extension cord is in good condition When using an extension cord be sure to use one heavy enough to carry the current your product will draw An undersized cord will cause a drop in line voltage resulting in loss of power and overheating Table shows the correct size to use depending on cord length a
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