Jet J-3130 Operating Instructions And Parts Manual page 20

Symptom Possible Cause
Blade twisting. (cont.) Incorrect guide bearing adjustment
Loose guide bearing bracket
Loose bearing seat attachment screw
Unusual wear on Blade guides worn.
side/back of blade.
Blade guide bearings
properly.
Blade guide bearing bracket loose.
Blade running on wheel flange.
Breaking teeth. Teeth too coarse for work.
Too heavy feed.
Too slow speed.
Vibrating work piece.
Tooth gullets loading
Blade in contact with work piece before
motor is started.
Motor running too hot. Blade tension too high.
Worn transmission and worm gear.
Gears need lubrication.
Correction
Adjust guide bearings according to instructions
in this manual.
Tighten bracket on saw arm.
Tighten bearing seat attachment screw –
adjust bearing clearance.
Replace.
not adjusted Check and adjust for proper clearance.
Tighten bracket to saw arm.
Adjust blade tracking using the paper cutting
method.
Use blade with finer pitch.
Decrease feed rate – observe chip formation to
verify efficient cutting.
Increase
literature or blade or work piece supplier for
blade speed recommendations.
Be sure vise is tight.
Support slender cross section or long work
pieces with appropriate in feed and out feed
supports.
If stacking pieces in the vise, be sure all work
pieces are securely captured by the vise.
Use coarser blade or one with a tooth
geometry more appropriate to the work piece
being cut.
Always allow motor to come fully up to speed
before beginning cut.
Decrease blade tension to just above slip
point.
Replace gears in transmission gearbox.
Check gearbox and add oil as required.
20
blade speed. Check technical