Wen 3970 Instruction Manual Download

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4 X 6-INCH

METAL BANDSAW

Instruction Manual

IMPORTANT:

Your new tool has been engineered and manufactured to WEN’s highest standards for dependability,

ease of operation, and operator safety. When properly cared for, this product will supply you years of rugged,

trouble-free performance. Pay close attention to the rules for safe operation, warnings, and cautions. If you use

your tool properly and for its intended purpose, you will enjoy years of safe, reliable service.

NEED HELP? CONTACT US!

Have product questions? Need technical support? Please feel free to contact us:

[email protected]

1-800-232-1195 (M-F 8AM-5PM CST)

For replacement parts and the most up-to-date instruction manuals, visit

WENPRODUCTS.COM

Summary of Contents for 3970

Page 1: ...rouble free performance Pay close attention to the rules for safe operation warnings and cautions If you use your tool properly and for its intended purpose you will enjoy years of safe reliable service NEED HELP CONTACT US Have product questions Need technical support Please feel free to contact us TECHSUPPORT WENPRODUCTS COM 1 800 232 1195 M F 8AM 5PM CST For replacement parts and the most up to...

Page 2: ...l Information 8 BEFORE OPERATING 9 Unpacking Transportation 9 Know Your Metal Band Saw 10 Assembly Adjustments 11 OPERATION MAINTENANCE 15 Operation 15 Maintenance 16 Troubleshooting Guide 18 Exploded View Parts List 20 Warranty Statement 24 To purchase accessories for your tool visit WENPRODUCTS COM Replacement Blades Part No 3970 044 ...

Page 3: ...o date manual or contact our customer service at 1 800 232 1195 Keep this manual available to all users during the entire life of the tool and review it frequently to maximize safety for both yourself and others SAFETY ALERT SYMBOL Indicates danger warning or caution The safety symbols and the explanations with them deserve your careful attention and understanding Always follow the safety precauti...

Page 4: ...c shock PERSONAL SAFETY 1 Stay alert watch what you are doing and use com mon sense when operating a power tool Do not use a power tool while you are tired or under the influence of drugs alcohol or medication A moment of inatten tion while operating power tools may result in serious personal injury 2 Use personal protective equipment Always wear eye protection Protective equipment such as a respi...

Page 5: ...accordance with these instructions taking into ac count the working conditions and the work to be per formed Use of the power tool for operations different from those intended could result in a hazardous situa tion 8 Use clamps to secure your workpiece to a stable surface Holding a workpiece by hand or using your body to support it may lead to loss of control 9 KEEP GUARDS IN PLACE and in working ...

Page 6: ...lds in close proximity to pacemakers could cause pacemaker inter ference or pacemaker failure 4 Wear work gloves when handling saw blades DO NOT wear gloves neckties jewelry or loose clothing while operating the saw 5 Metal chips are harmful to your health Use NIOSH approved dust masks or other respiratory protection during operation and cleaning 6 Always turn off and unplug the Metal Bandsaw befo...

Page 7: ...or hidden wiring Contact with a live wire will make exposed metal parts of the power tool live and shock the operator if the insulated gripping surfac es are not used 6 Do not use the Metal Bandsaw unless all guards are in place Do not operate with any guard disabled dam aged or removed Moving guards must move freely and close instantly 7 Turn on the Metal Bandsaw and let it reach full speed then ...

Page 8: ...tor with the green insulation with or without yellow stripes is the equipment grounding conductor If repair or replacement of the electric cord or plug is necessary DO NOT connect the equipment grounding conductor to a live terminal 1 Examine extension cord before use Make sure your extension cord is properly wired and in good condition Always replace a damaged extension cord or have it repaired b...

Page 9: ...The tools listed below are not included but are required for either assembly or adjustment 14mm open end wrench 2 10mm open end wrench 2 TRANSPORTING When transporting the Metal Bandsaw use the transportation handle and roll the assembled saw with the wheels Never carry the saw by its guards or its accessories UNPACKING TRANSPORTATION WARNING Do not plug in or turn on the tool until it is fully as...

Page 10: ...controls of your Metal Bandsaw The components will be referred to later in the manual for assembly and operation instructions A Blade Guides B Blade Tension Adjustment Knob C Blade Guard Adjustment Knob D Feed Rate Adjustment Handle E Power Switch F Vise Adjustment Handle G Transportation Handle H Wheel I Work Stop Assembly J Blade K Motor L Belt Housing 10 D F G H B A K L C E I J ...

Page 11: ...olts M6 1 hex nuts 6mm lock washers and the 6mm flat washers to install the wheel mounting brackets Fig 4 onto the legs Hand tighten 6 Slide the shaft through the holes in the wheel mounting bracket Slide the wheels onto the shaft on the outside of the mounting bracket and secure them with the cotter pins See Fig 5 7 Check to see if the bandsaw is relatively level then the tighten all of the nuts ...

Page 12: ...m gear pulley on the shaft closest to the gear box opposite of the motor Fig 9 ASSEMBLY ADJUSTMENTS NOTE Make sure to pay attention to the direction of the pulley s installation 12 12 Use a straight edge to check the alignment of the pulley wheels and adjust them as needed Fig 9 13 When the pulley wheels are aligned tighten the set screws on both pulleys and install the V belt The belt ten sion ca...

Page 13: ...e factory and should not need any adjustment If adjustment is necessary follow the steps below 1 The feed rate is controlled by the spring and handle See Fig 14 Twist the handle clockwise to add tension to the spring and decrease the feed rate Twist the handle counterclockwise to remove the ten sion from the spring and increase the feed rate ASSEMBLY ADJUSTMENTS 13 WARNING Do not plug in or turn o...

Page 14: ...pin Fig 18 safely secures the head in the down position To ensure the head does not unexpect edly spring up and tip the bandsaw over this locking pin must be properly inserted when the band saw is not in use or before moving it To use the head locking pin 1 Fully lower the head down Insert the locking pin through the holes in the head pivot arm and base locking the head into the down position Fig ...

Page 15: ...and saw frame so it will adequately sup port the workpiece Always keep your fingers away from the blade Adjust the blade guides as close as possible to the workpiece to mini mize side to side blade movement To assemble the bandsaw for vertical cutting 1 Disconnect the bandsaw from the power supply 2 Install the safety bracket and lock it into place with the pin to keep the saw from falling The bra...

Page 16: ... prevent warp ing and prolong your blade s life MAINTENANCE WARNING To avoid accidents turn OFF and unplug the tool from the electrical outlet before cleaning adjusting or performing any maintenance work WARNING Any attempt to repair or replace electrical parts on this tool may be hazardous Servicing of the tool must be performed by a qualified technician When servicing use only identical WEN repl...

Page 17: ... saw in the vertical posi tion Remove the blade cover screw and loosen the blade cover lock knob See Fig 24 Open the blade cover 2 Confirm that the blade tension is set properly Using a gloved finger lightly press on the side of the saw blade The blade should flex about 1 8 inch if properly tensioned Adjust tension if necessary 3 Run the saw and observe the blade The blade should run next to but n...

Page 18: ...customer service at 1 800 232 1195 for assistance Machine stalls or is underpowered 1 Wrong blade for workpiece material 1 Use a different blade more suited to the material type 2 V belt is worn or loose 2 Inspect belt or replace as need be 3 Pulley is loose 3 Re align pulleys tighten set screws Machine vibrates or operates noisily 1 V belt is hitting belt cover 1 Verify that belt cover was instal...

Page 19: ...e workpiece in the vise 6 Poor blade tension 6 Check blade tension 7 Warped blade 7 Contact customer service at 1 800 232 1195 for assistance Blade tends to protrude from guide bearings 1 Excessive blade tension 1 Check blade tension 2 Incorrect tracking adjustment 2 Adjust blade tracking 3 Blade is slipping on guide bearings cutting oil has been used 3 We do not recommend using lubricant or coola...

Page 20: ...EXPLODED VIEW PARTS LIST 20 20 ...

Page 21: ...34 3970 034 Spring 1 35 3970 035 Flat Washer 1 36 3970 036 Blade Tension Knob 1 37 3970 037 Bushing 1 No Part No Description Qty 38 3970 038 Ball Bearing 2 39 3970 039 Retaining Ring 2 40 3970 040 Rear Blade Wheel 1 41 3970 041 Flat Washer 1 42 3970 042 Flat Washer 1 43 3970 043 Socket Head Screw 1 44 3970 044 Blade 1 45 3970 045 Switch Cut Off Finger 1 46 3970 046 Flat Washer 1 47 3970 047 Lock W...

Page 22: ...r 1 106 3970 106 Ball Bearing 1 107 3970 107 Shaft 1 108 3970 108 Rear Blade Guide 1 No Part No Description Qty 109 3970 109 Shaft 2 110 3970 110 Ball Bearing 2 111 3970 111 Retaining Ring 2 112 3970 112 Rear Blade Guard 1 113 3970 113 Flat Washer 2 114 3970 114 Pan Head Screw 2 115 3970 115 Rear Guide Base 1 116 3970 116 Pan Head Screw 1 117 3970 117 Flat Washer 1 118 3970 118 Frame Guard 1 119 3...

Page 23: ...Relief 2 176 3970 176 Power Cord 1 177 3970 177 Serrated Washer 2 178 3970 178 Pan Head Screw 2 179 3970 179 Switch 1 180 3970 180 Angle Scale 1 181 3970 181 Rivet 2 No Part No Description Qty 182 3970 182 Screw Support Block 1 183 3970 183 Flat Washer 2 184 3970 184 Lock Washer 2 185 3970 185 Hex Head Bolt 2 186 3970 186 Vise Nut 1 187 3970 187 Lead Screw 1 188 3970 188 Bushing 1 189 3970 189 Set...

Page 24: ... products may need to be sent to WEN before the replacements can be shipped out Upon the confirmation of a WEN representative your product may qualify for repairs and service work When re turning a product for warranty service the shipping charges must be prepaid by the purchaser The product must be shipped in its original container or an equivalent properly packed to withstand the hazards of ship...

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