Stihl TSA 230 Instruction Manual page 47

8 Diamond Abrasive Wheels
8.3 Troubleshooting
8.3.1 Abrasive wheel
Defects
ragged edges or cut surfaces,
crooked cut
heavy wear on the sides of the
segments
ragged edges, crooked cut, no
cutting performance, generation
of sparks
poor cutting performance, high
segment wear
Breakdowns or tears in the
parent wheel and segment
Undercut
8.3.2 Undercut
Do not cut into the base course (frequently chip‐
ped stones and gravel) when cutting roadway
pavement – cutting in chipped stones and gravel
is revealed by light-colored dust – excessive
undercut may occur as a result – Danger of shat‐
tering!
8.3.3 Built-up edges, sharpen
Built-up edges take the form of a light gray
deposit on the tops of the diamond segments.
1)
STIHL recommends STIHL servicing dealers
0458-707-9821-C
Cause
Deviation in radial or axial run-out Contact a servicing dealer
Abrasive wheel gyrates
Abrasive wheel is dull; built-up
edges with abrasive wheels for
stone
Abrasive wheel is turning in the
wrong direction
Overloading
Cutting in the wrong material
This deposit on the segments clogs the dia‐
monds and blunts the segments.
Built-up edges can form:
– when cutting extremely hard materials, e. g.,
– with incorrect handling, e. g., excessive feed
Built-up edges increase vibration, reduce cutting
performance, and cause formation of sparks.
At the first signs of built-up edges, immediately
"sharpen" the diamond abrasive wheel – to do
this, briefly cut through abrasive material such as
e. g. sandstone, aerated concrete or asphalt.
Addition of water prevents the formation of built-
up edges.
If work continues with dull segments, these may
soften due to the high heat generated – the
parent wheel is annealed and its strength is com‐
promised – this can lead to stresses that are
clearly recognizable by gyrations of the abrasive
Remedy
use a new abrasive wheel
Sharpen abrasive wheels for
stone by briefly cutting through
abrasive materials; replace
abrasive wheel for asphalt with a
new one
Mount abrasive wheel so that it
turns in the right direction
use a new abrasive wheel
use new abrasive wheel;
observe separating layers of
various materials
granite
effort
English
1)
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