Northern Industrial Tools Item# 145765 - Manual (Page 11)

SYMPTOM CAUSE (S) POSSIBLE CORRECTIVE ACTION
1. Incorrect blade tension ust does not slip on wheel 1. Adjust to where blade j
2. Incorrect speed or feed 2. Check Machinist Handbook
3. Material loose in vise 3. Clamp work securely
Excessive Blade 4. Blade rubs on wheel flange 4. Adjust wheel alignment
Breakage r material Machinist Handbook for recommended blade 5. Teeth too coarse fo 5. Check
6. Teeth in contact with work before saw is started 6. Place blade in contact work after motor is started
7. Misaligned guides 7. Adjust
8. Blade too thick for wheel diameter 8. Use thinner blade
9. Cracking at weld 9. Make longer annealing cycle
1. Teeth too coarse 1. Use finer tooth blade
2. Too much speed 2. Try next lower speed
Permanent Blade . Inadequate feed pressure 3. 3 Decrease spring tension on side of saw
Dulling 4. Hard spots or scale in/on material 4. Reduce speed increase feed pressure (Scale)
increase feed pressure (Hard Spots)
5. Work hardening of material (especially stainless 5. Increase feed pressure by reducing spring tension
steel)
6. Blade installed backwards 6. Remove blade twist inside out and reinstall blade.
7. Insufficient blade tension 7. per level Increase tension to pro
1. Work not square 1. Adjust vise to be square with blade. Always clamp
Work tightly in vise.
2. Feed pressure too great 2. Reduce pressure by increasing spring tension on side
of saw.
Bad Cuts (Crooked) properly ter than max. 3. Guide bearing not adjusted 3. Adjust guide bearings to 001 grea
thickness, including weld of the saw.
4. Inadequate blade tension ension a little at a time 4. Increase blade t
5. Blade guides spaced out too much 5. Move guides as close to work as possible
6. Dull blade 6. Replace blade
7. Speed incorrect 7 Check manual for recommended speeds
8. Blade guide assembly loose 8. Tighten
9. Blade guide bearing assembly loose 9. Tighten
10. Blade tracks too far away from wheel flanges 10. Retrack blade according to operating instructions
Bad cuts (Rough) ed 1. Too much speed of fe 1. Reduce speed and feed
2. Blade is too coarse 2. Replace with finer blade
Blade is twisting 1. Cut is binding blade sure 1. Decrease feed pres
2. Too much blade tension 2. Decrease blade tension
Unusual Wear on 1. Blade guides worn 1. Replace
Side/Back of Blade djusted properly s’ manual 2. Blade guide bearings not a 2. Adjust as per operator
3. Blade guide bearing bracket is loose 3. Tighten
1. Tooth too coarse for work 1. Use finer tooth blade
Teeth Ripping from : too slow feed 2. Too heavy feed 2. Increase feed pressure and/or speed
blade 3. Vibrating work piece 3. Clamp work securely
4. Gullets loading 4. Use coarse tooth blade or brush to remove chips
1. Blade tension too high 1. Reduce tension on blade
2. Drive belt tension too high 2. Reduce tension on drive belt
Motor Running too
H t
3. Blade is too coarse for work (Pipes especially) 3. Use finer blade
slow (Heavier, softer material) 4. Blade is too fine for work 4. Use coarser blade
5. Gear not aligned properly 5. Adjust gears so that worm is in center of gear
6. Gears need lubrication 6. Check oil bath
7. Idler wheel needs lubrication 7. Oil bearing/shaft on idler wheel
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