4. Fully tighten the Allen bolts 18 diagonally
(see below for torques).
a
d
Bonnet
Wrench
size
size
1
3
2
4
3
5
4
8
5. Push in new caps 39 until they are fl ush
with bonnet A.
C57 HPW
c
b
18
Thread
Tightening
diameter
torque Nm
M4
0.70
M5
1.10
M6
2.00
M10
4.15
39
A
Important:
When mounting a replacement
bonnet A please assemble the
loosely supplied optical position
indicator S according to chapter
11.5 "Replacing the optical position
indicator" from point 3!
11.5 Replacing the
optical position indicator
Bonnet size 1 - 3:
1. Move bonnet A to the closed position.
Then turn back the handwheel H until
resitance is felt (see chapter 10.2), and
keep it in this position.
2. Prick cap K with a screw driver, carefully
pry it upwards with the optical position
indicator S and dispose.
34 / 44
K
S
H
A