14.2.2 Fitting the regulating cone
Without assembly tool
1. Fit the valve spindle 21 and regulating
cone 3 with the fi tted isolating
diaphragm 2 by sliding them into the
control mechanism 4.
Do not damage the sealing
surfaces.
2. Fit the compression spring 23.
3. Fit the washer 22.
4. Fit the circlip 28.
Compression spring 23 is under
tension.
5. Place the control mechanism 4 onto the
valve body 1.
6. Fit the washers 7 and hexagon socket
screws 6, and tighten the screws by
hand.
7. Fully tighten the hexagon socket
screws 6 diagonally.
With assembly tool
1. Have the assembly tool to hand.
The assembly tool must be
ordered separately (order key:
566000MWZ).
2. Tension compression spring 23 using
the assembly tool.
Do not damage the sealing
surfaces.
3. Fit the valve spindle 21 and regulating
cone 3 with the fi tted isolating
diaphragm 2 by sliding them into the
control mechanism 4.
566
4. Fit the circlip 28.
5. Place the control mechanism 4 onto the
valve body 1.
6. Fit the washers 7 and hexagon socket
screws 6, and tighten the screws by hand.
7. Fully tighten the hexagon socket
screws 6 diagonally.
14.3
Replacing the isolating
diaphragm
14.3.1 Removing the isolating diaphragm
Without assembly tool
1. Remove the regulating cone (see
chapter 14.2.1 "Removing the regulating
cone" – Without assembly tool).
2. Position a WAF 17 open-end wrench on
the regulating cone 3. Simultaneously,
position a WAF 18 open-end wrench on
the nut 29. By counterholding both open-
end wrenches, carefully release the
regulating cone 3 and the nut 29 from
the isolating diaphragm 2.
21
2
3
2
4
29
21
3. Leave valve spindle 21, spring washers 30
21
and nut 29 in their original position.
29
2
50 / 64
Compression spring 23 is under
tension.
29
21
30
30
Bottom view
Top view