Operation instructions
SIPOS SEVEN ECOTRON
Page 10 Y070.301/EN
3 Assembly and connection
3
Assembly and connection
Output ange (g. item 1) does not have to
be removed from the rotary actuator!
1. Unscrew centering ring (g. item 5) from
output ange.
2. Take off stem nut (4) together with axial
needle-roller assembly and axial bearing
washers (3).
3. Remove the axial needle-roller assembly and
the axial bearing washers (3) from the stem
nut.
4. Only if the stem nut was delivered without
thread: Cut a thread in the stem nut (4)
(check the concentricity and the axial run-out
when clamping the stem nut) and clean it.
5. Lubricate axial needle-roller assembly and
axial bearing washers (3) with ball bearing
grease and t them on the new or machined
stem nut (4).
6. Insert stem nut (4) with axial needle-roller
assembly into output ange (claws have to
engage properly into the groove of the output
shaft of the actuator).
7. Screw in the centering ring (5) and tighten it
to the stop. Make sure that the radial shaft
seal (6) is inserted correctly.
8. Using a grease gun, press ball bearing
grease into the nipple until lubricant is dis-
charged between the centering ring (5) and
the stem nut (4).
For output shaft form A, ensure that the valve stem is greased separately!
3�1�3 Mount stem protection tube
1. Remove fastener (g. item 1).
2. Check that the extended stem does not ex-
ceed the length of the protective tube.
3. Apply sealing compound to the thread and
the sealing faces (e.g. 732 RTV from Dow
Corning, Munich, Germany).
4. Screw in the stem protection tube (2).
Fig�: Output shaft type A
assembly
Fig�: Output shaft type A
installed
Fig�: Mounting the stem protection
tube
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