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Series KSE/F, KSE-C/F
♦ Screw on lifting cap 535 and tighten.
♦ Insert lifting lever 238.
♦ Mount locking plate 539.
♦ Have valve lead-sealed.
♦ The data specified in the test certificates are to be
observed.
9.5
Important notes on disman-
tling / installation
First relieve plug 204 and lift it off the seat.
♦ The seat and plug could otherwise be destroyed.
Read the precise instructions in Section 9.6, 9.7
and 9.8..
♦ Then undo the screws between the body 100 and
the inlet nozzle 122 or between the bonnet 513
and body 100.
♦ Always replace the seat and plug pairwise and
always rework them completely.
♦ Reworking of the seat and plug requires special-
ised knowledge of the material as well as special
lapping wheels.
♦ It is therefore recommended to have this work
carried out by the manufacturer.
♦ After dismantling, check all parts for wear and
damage.
♦ Observe sectional drawings in Section 10.
9.6
Replacement of components
9.6.1 Dismantling of the plug
♦ Undo locking plate 539, dismantle lifting lever 238
and unscrew the lifting cap 535.
♦ Mark the position of the stem nut 534.
♦ Unscrew the prevailing torque type hexagon nut
929/1 and stem nut 534 off the stem 802.
♦ When undoing or tightening the prevailing torque
type hexagon nut 929/1, carefully hold the spindle
tight with pliers to prevent it from turning.
Do not turn the entire stem 802! There
is a risk that the insert sleeve 308 will be
screwed out of the bellows 206 and the
folds or the spring-type pin 939/1 will be
damaged!
♦ Mount a suitable distance sleeve (not included in
the scope of delivery) over the stem 802.
9530-001-en
Revision 19
TM 9549
Edition 11/2018
♦ Screw the stem nut 534 against the distance
sleeve. The plug 204 is lifted off the seat 205 and
the closing force becomes ineffective.
♦ Loosen the bolts 901/1, 936/1, 936/2 and 920/2 (in
the case of KSE/F and KSE-C/F 100/150 902/2,
934/1, 936/1 and 920/2) from body 100 and spring
bonnet 513 and lift the bonnet with internals com-
pletely off.
♦ Grip the bellows 206 in the reinforced section just
above the lifting aid 237. Unscrew the lifting aid off
the bellows and remove the plug 204.
9.6.2 Dismantling of the seat
♦ Remove spring bonnet 513 from the body 100.
♦ See Section 9.6.1.
♦ Dismantle inlet nozzle 122 from the body 100 and
remove the seat 205.
9.6.3 Installation of the seat
♦ Insert the new or reworked seat 205 at the bottom
into the corresponding centring of the body 100.
♦ Then insert the inlet nozzle 122 into the centring of
the body 100.
The components must be smooth running, i.e. can
be centred without any constraining forces.
If necessary, the inlet nozzle is to be turned
through 90°.
♦ First tighten the attachment nuts 920/1 hand-tight
and then with a torque wrench evenly and in
diametrically opposite sequence.
It is imperative to observe the prescribed
torques for the connection body / inlet
nozzle! See Section 9.3.
9.6.4 Installation of the plug
♦ All parts are to be thoroughly cleaned before
assembly.
♦ Centre the new or reworked plug 204 in the lifting
aid 237 and screw completely onto the thread of
the bellows hand-tight. Hold the bellows 206 at
the reinforced section.
♦ Undo the hex. socket screws 914/1. Centre the
spring bonnet 513 with internals on the body 100.
Ensure that there is metallic contact between the
body and the spring bonnet. Then tighten the
screws 901/1, 936/1, 936/2 and 920/2 (on KSE/F
and KSE-C/F 100/150 902/2, 934/1, 936/1 and
920/2).
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