MULTIQUIP st3020bcul User Manual download pdf (Page 25)

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MAINTENANCE

Inspecting Lubrication Oil (Mechanical Seal)

1. Block the oil ﬁll opening with a ﬁnger and roll pump to

one side to drain (Figure 22) oil into a small transparent

container.

2. If oil is cloudy (milky) or has water in it, indicates

that mechanical seal is defective or worn. Replace

mechanical seal.

Figure 22. Lubrication Oil Inspection



Refer to the the following procedure and Figure 23 for the

removal of the impeller and mechanical seal.

1. Remove the three strainer bolts (item 147) that secure,

strainer to the suction cover (item 176). Remove

strainer (item 146).

2. Remove the four suction cover bolts (item 177) that

secure the suction cover (item 176) to the casing (item 1).

Remove suction cover.

3. Remove suction cover packing (item 179) from suction

cover and friction disc (items 176 and 2).

4. Remove impeller nut (item 4) and washer (item 53).

5. Remove impeller (item 3) and impeller key (item 6)

from motor shaft. Remove mechanical seal (item 60).

6. Remove adjustment liner (item 47).

7. Reassemble in reverse order.

Figure 23. Impeller/Mechanical Seal Removal

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MULTIQUIP st3020bcul User Manual Page 25