16
Symptom Possible Cause Correction *
Excessive vibration. Machine on uneven surface. Place machine on flat surface.
Stone wheel out of balance. Dress wheel.
One side of wheel is saturated. Allow wheel to dry. Do not leave idle
wheel immersed in water.
Loose fasteners. Check all fasteners.
11.2 Mechanical and operational problems
Table 5
Symptom Possible Cause Correction *
Wheel doesn’t hold an
edge, or wears too
rapidly.
Too much pressure being applied. Use lighter pressure; let the wheel do the
work.
Poor grade of wheel. Use quality wheels.
Marring of tool edge. Debris on wheel. Dress wheel for a fresh surface. Clean
debris from tank, and refill with fresh
water.
Wheel slips during
rotation.
Insufficient torque adjustment. Use torque adjust knob to remedy.
Screw or knob not tightened down. Tighten down wheel fasteners (do not
overtighten).
Grinding creates a
slight angle along width
of tool.
Jig is slipping. Make sure jig is tightened down.
Support arm not parallel to wheel. Adjust support arm to make parallel.
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