Stihl TS 400 Manual page 10

STIHL TS 400
Test sequence
Radial runout:
Visual inspection,
spindle (shaft)
Axial runout:
Axial runout tested with
STIHL test wheel or
diamond cutting wheel
(on 130 mm dia.)
Actual condition
Wear marks or scoring
around the cutting wheel
mount
Axial runout
≤ 0.15 mm
> 0.15 mm
Mating faces of the thrust
washers damaged or uneven
(particularly in the case of the
inner thrust washer), mating
faces not level, parts are not
original STIHL parts
Spindle (shaft)
damaged
Tangible radial play in the
bearing seat →
spindle bearing defective
Possible causes
Fastening screw loose during
operation, wrong cutting
wheels used (mount dia. > 20
mm or > 22 mm)
Dirt, thrust washers or
cutting wheel fitted
incorrectly, use of force
during cutting or
transport
Incorrect handling,
use of force
Deep groove ball bearing
damaged by dirt and/or
seat of spindle bearing worn
10
Remedy
Replace spindle
(shaft)
None
Replace thrust
washers
Replace spindle
(shaft)
Replace spindle
and deep groove
ball bearing