Centrifugal Cooling Water Pump
Maintenance / Disassembly and reassembly
A5.05. 09.07.01.01
15000
M20
en / 06.06.2000 IB022224 2/3
09
Ĺ
1.9 Loosen the hexagon screws (Fig. 2/18) and remove the housing cover (12) from the bearing
carrier (19).
1.10 Loosen flat head screw (28).
1.11 Remove cover (26) with sealing ring (27).
1.12 Remove circlip (21) and “Nilos“ lock ring (20).
1.13 Force the shaft (5) with grooved ball bearing (22 and 23) out in (X)-direction.
Attention:
Force the shaft out in X-direction only so far that the grooved ball bearing can be removed
with a suitable tool, so that the bearing (22) is not demaged on the recess (Z)
1.14 Remove the grooved ball bearing (23)
1.15 Force the shaft with grooved ball bearing (22) out in (Y)-direction and take out of bearing
support (19).
1.16 Pull the grooved ball bearing (22) off the shaft.
2. Inspection
2.1 Inspect the impeller (13) visually and renew it in the case of heavy cavitation.
2.2 Check the ball bearings for freedom of movement, wear, corrosion, ball disintegrations
and renew them if necessary.
2.3 Check the pressure compensating hole (24) and leaking liquid discharge (25) for free
passage.
3. Reassembly
3.1 The reassembly is made in reverse order observing the following:
3.2 Renew all gaskets of the housings and mechanical seal (17).
3.3 Before mounting the impeller (13), check contact reflection between impeller cone and
shaft cone by spot-grinding. (Min. 60 % of profile bearing length distributed uniformly over
the cone).
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