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C57 HPW
4. Fully tighten the Allen bolts
18
diagonally
(see below for torques).
18
a
b
c
d
Bonnet
size
Wrench
size
Thread
diameter
Tightening
torque
[
Nm
]
1
3
M4
0.70
2
4
M5
1.10
3
5
M6
2.00
4
8
M10
4.15
5. Push in new caps
39
until they are
fl
ush
with bonnet
A
.
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.
K
A
S
H
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