Centrifugal Cooling Water Pump
Maintenance / Disassembly and reassembly
A5.05. 09.07.01.04
15000
M20
en / 30.09.2010 IB024271 3/5
09
1.13 Loosen screws (Fig. 2/23) and remove cover (24).
1.14 Remove slinger ring(25) from the shaft by means of an extractor.
1.15 Clamp bearing carrier (13) in a bench vice and heat inner ring of the ball bearing (26) up.
1.16 Drive shaft (20) out by means of a soft head hammer.
1.17 Remove ball bearing (26) from bearing carrier (13).
1.18 Heat slinger ring (27) and remove it.
1.19 Heat inner ring of the ball bearing (28) and remove the ball bearing.
2. Check
2.1 Check impeller (18) visually and exchange it in case of heavy cavitation.
2.2 Check leak liquid drains (29) for free passage.
3. Reassembly
3.1 Clean bearing seats on the shaft (20).
3.2 Heat new ball bearing (28) up to 80°C and mount it at the impeller end. The inner ring of the ball
bearing must fit closely to the shaft recess.
3.3 Feed shaft (20) with ball bearing (28) into the bearing carrier (13).
3.4 Clamp shaft (20) at the mechanical seal seat in the bench vice.
3.5 Heat new ball bearing (26) up to 80°C and mount it at the driving end. The inner ring of the ball
bearing must fit closely to the shaft recess.
3.6 Insert shaft (Fig. 2/20) in the bearing carrier (13).
3.7 Mount carrier cover (24) with screws (23), lock screws with Loctite.
3.8 Heat new slinger ring (25) up to 150°C and mount it on the shaft (20) at the driving end. The sling-
er ring must closely fit to the ball bearing.
CAUTION
Drive screw M12x45 into the shaft (20) and put the extractor on it.
CAUTION
Use soft jaws in order not to endanger the shaft.
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