1.
Place the heated metal tip of the
O-ring cutter
at right angles on the valve
seat to be removed.
2.
Cut through the valve seat seal at one point using the
O-ring cutter
.
!
Pay attention not to damage the edge of the radial groove.
Fig.37:
Cut through valve seat seal
3.
Take out the cut valve seat seal.
®
The valve seat seal has been removed.
10.8.2 Fitting the “Shrink-on Fit” Valve Seat Seal
Hint!
Pay attention to the following points when assembling the valve seat
seal:
•
Thoroughly clean all parts and check for damage.
•
Replace all dismantled seals.
•
When changing the seals, do not damage the seal groove.
•
Use only replacement seals from the seal set indicated in the list of
spare parts.
! Valve seat seals made of hard sealing materials must not be greased!
Tools required:
•
Oven (no microwave)
•
Heat-resistant protective gloves
Carry out the following steps:
1.
Heat new valve seat seal
in oven
.
–
Temperature: 140 °C (guideline value)
–
Time: 3 - 5 minutes (guideline value)
!
Ensure that the seal can be deformed along the circumference without much
effort. The required heating time depends on the respective
oven
and can
vary accordingly.
Maintenance
Removing and Installing the "Shrunk-on” Valve Seat Seal
430BAL011547EN_2
08.07.2019
43
