24
The necessary torque for tightening the collar screw
varies depending on type.
Please refer to the following table for the correct
torque.
GK 21
DN50
GK 11
DN65,
DN80
GK 11
DN100
GK 11
DN150
140 Nm
140 Nm
370 Nm
670 Nm
Tighten the collar screw to the specified torque.
Fit the lid, as described on page 25.
Replacing the stuffing box
Remove the lid, as described on page 21.
Remove the stage plunger from the spindle, as
described on page 23.
Remove the two counter nuts (8) from the
handwheel.
Remove the tapered groove pin (30) from the
pointer (9).
Slacken the two hex nuts (31) on the stuffing
box gland (32).
Screw the spindle (28) downwards out of the
threaded sleeve (33).
When the spindle is unscrewed from the
threaded sleeve, pull the pointer (9) upwards
and off the spindle.
Pull the spindle downwards out of the lid.
You can now replace the stuffing box.
Proceed as follows to replace the stuffing box:
Remove the two hex nuts (31) and the stuffing
box gland (32).
You do not need to remove the stuffing box bush
(33) in order to replace the stuffing box.
Remove the packing rings (25) from the lid.
Replace the packing rings with the same
number of new ones.
Check all removed parts for signs of damage.
Replace all worn or damaged parts.
Clean all dirty parts.
The gaskets of the equipment must be replaced
in any case.
Position the stuffing box gland on the studs in
the lid.
By hand, screw the two hex nuts onto the studs.
Push the spindle through the gland seal from
below.
Screw the spindle into the threaded sleeve.
Align the pointer so that the holes for the
tapered groove pin are situated one above the
other.
Knock in the tapered groove pin to secure the
pointer.
By hand, screw the two counter nuts onto the
spindle and pointer.
Coat the thread and contact surfaces with
temperature-resistant lubricant.
The lubricant must have the same properties as
OKS 217.
The necessary torque for tightening the hex nuts on
the stuffing box gland varies depending on type.
