Dale Hamil
Illinois Electric Works
In oil-lubricated machines, leaks are a frequent and difficult-to-diagnose and correct condition. Due to design issues, there may even be a few machines where oil leaks are simply part of the landscape and not correctable without major modifications.
Topics discussed in this article include:
- Overfilling
- Checking/replacing sight glasses
- Proper venting of labyrinth seals
- Checking/repairing stand tubes (stand pipes)
- Proper sealing
- Examining condition of oil sumps
- Draining oil before transporting
- Oil foaming
- Checking vibration levels
- Checking to see if motor is running off electrical center
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Hint: As final proof during no-load testing, place plastic coated Kraft paper (see Figure 2), plastic side down, under the motor on each end. Even a single drop of oil will be clearly visible on the paper that may be otherwise missed. Any oil drips should be investigated and fully resolved before shipping.
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