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Westfalia Separator
Mineraloil Systems GmbH
123
2058-9001-101
/
0506
4.3.9 Reworking the sliding piston
The bowl seal consists of
•
the sealing surface A of the sliding piston (Fig. 183) (Sealing surface A as de-
livered 2 mm high) and
•
the polyamide gasket B of the bowl top (Fig. 185).
Fig. 183
When worn, the sealing surface A of
the sliding piston can be remachined
up to max. 0.5 mm
several times be-
fore it has to be replaced.
When the first erosion marks (0.2
mm deep) are detected, i.e. as soon
as the bowl starts to leak:
•
Remachine the sealing surface of
the sliding piston.
Fig. 184
•
When remachining, make sure that
–
the sealing surface is machined
cleanly and
–
shoulder H at diameter X is still
at
least 1.5 mm high
.
Standard parameters for remachining the sealing surface
Surface quality
Ra 2 µm (Rz 12.5 µm)
Tool
Hard metal steel of ISO quality M 30 or K 20
Speed 55
min
-1
Cutting depth
max. 0.15 mm
Forward feed
max. 0.1 mm/revolution
Summary of Contents for OSD 6-91-067
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