7. TROUBLESHOOTING
. ..A. MECHANICAL ”
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Analysis Of Selected Causes
The following problems may be caused by insufficient
water flow:
o Excessive segment (A) wear or off-sided segment
wear (one water nozzle blocked).
o Always check that the engagement roller (C) can
move freely in and out of its casing. If stuck, the
roller cannot push the blade against the drive disc
with enough force.
Less common are:
o Excessive core (B) wear.
o Rapid engagement roller (C) or drive disc (D)
wear.
The following are the most common causes of blade
slippage.
o Worn Drive Disc (D).
How long a drive disc will last depends on how
abrasive the material is and on how well it is
flushed away.
o Worn out Shoulder (E) on Engagement Rollers.
If the width of the shoulder (E) is more than 50
percent worn, the blade will slip prematurely.
o Worn Inner Edge and Tracking Groove on Blade.
This is caused by lack of sufficient water flow to
flush away the abrasive slurry and by working
with a worn drive disc which allows the blade to
slip excessively.
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