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8480
8350-C
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8470
8350-B
8350-C
8430
8350-A
8420
0701
8410
A.0500.551 – IM-TGMAG/02.00 EN (02/2008)
6. Peel the required number of layers off the bearing shim
(8470) to adjust the thickness of the shim S to the required
value.
7. Un-tighten cap head screws (8480) and remove radial
bearing holder (8350-C) from the intermediate cover
(8450).
8. Assemble radial bearing holder (8350-C) again in the same
way with the shim placed between holder and intermediate
cover (8450).
9. Place front axial bearing holder (8350-A) into the pump
insert (8430) until the axial bearing faces are making contact
and check if the axial clearance C of the circulation pump is
correct. Dimension X should be within the range of dimen-
sion C. (See point 5).
4.3.2.2 Assembly of rotor shaft
1. Place the shaft rotor on the workbench in vertical
position, put a thin layer of grease on all sliding faces of
the bearings.
2. Place the disk rotor (8420) into the chamber of the pump
insert (8430).
3. Check that the axial contact faces of the axial bearing holder
(8350-A) and shaft sleeve (8350-B) are undamaged and
free of any dirt.
4. Place the disk rotor (8420), the front axial bearing holder
(8350-A) and the bearing arrangement over the shaft rotor
(0701). Make sure that the pin (8410) in the rear face of
the rotor is fitting into the hole of the axial bearing holder
(8350-A).
5. Push shaft sleeve (8350-B) carefully from the rear side
into the radial bearing holder (8350-C). Do not use any
force or a hammer while fitting the rotor shaft (0701) into
the bearings.
Remark: Do not use any force while mounting the shaft sleeve
(8350-B) and no hammer to drive it in. These parts are very
sensitive and should be handled with utmost care in order not
to damage them during assembly. The parts should fit into each
other smoothly and under light pressure by hand. If it is not
possible to fit these parts by hand, disassemble the parts and
check if the parts are not damaged or if there is any dirt between
the fitting faces.