Centrifugal Cooling Water Pump
Maintenance / Disassembly and reassembly
A5.05. 09.07.01.00
15000
M20
en / 31.05.2010 IB022205 2/3
09
1.9 Loosen the hexagon screws (Fig. 2/18) and remove the housing cover (12) from the bearing car-
rier (19).
1.10 Loosen flat head screw (28).
1.11 Remove cover (26) with sealing ring (27).
1.12 Remove “Nilos“ lock ring (20).
1.13 Force shaft (5) and grooved ball bearing (22) out of bearing flange (19) with a suitable tool..
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.)
27
19
28
22
18
11
15
16
17
24
14
12
20
25
5
13
26
22
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