IM-P204-03
CH Issue 8
17
B
C
Remove the head set and guide plate.
Note:
Remove and clean the guide plate and the gasket surfaces and fit new gaskets
throughout.
E
4
5
Replace the guide plate and screw the new head set onto the stem (hand tight). Then
proceed to tighten by holding the nut
B
using a 22 mm A / F spanner and tighten the
head adaptor nut
C
with a 24 mm A / F spanner to a torque of 15 ±1 N m for the DN15
- DN20 and 20 ±2 N m for the DN25 - DN100.
Caution:
to prevent any damage care
must be taken not to twist the bellows. To prevent over-extension (stretching) of the
bellows locate the guide plate on the head set before tightening the plug to the stem.
When replacement of the head set is complete, remove nuts
A
and
B
.
6
Gasket surfaces
Guide plate
Summary of Contents for DLV7
Page 40: ...IM P204 03 CH Issue 8 40...
