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13 Inspection and maintenance
13.2 Replacing the regulating cone
13.2.1 Removing the regulating cone
6
11
16
1
1. Remove the actuator (see chapter "Removing the actuator
from the distance piece").
2. Undo the cap nuts 18 from the stud bolts 16.
3. Remove the washers 17.
4. Remove the valve body 1 from the distance piece 11.
ð Do not damage the sealing surfaces!
6
11
2
20
4
3
GEMÜ 567 BioStar control
6
18
11
17
2
20
3
2
5. Position a WAF 8 open-end wrench on the wrench surface
20
of the valve spindle 6 (do not damage the spindle surfaces
4
in the process).
3
6. Simultaneously, position a WAF 16 open-end wrench on
the support ring 20. By counterholding both open-end
wrenches, carefully release the support ring 20 with the
regulating cone 3 from the valve spindle 6.
20
3
7. Hold the support ring 20 in place and release the regulat-
ing cone 3 using the assembly tool. Do not damage the
regulating cone surface in the process.
4
3
8. Remove the O-ring 4 from the regulating cone 3.
9. Carefully remove the solvent cement from the thread on
the regulating cone 3 (e.g. using a stainless steel brush).
ð Do not damage the regulating cone surface in the pro-
cess.
44 / 54
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