How do you measure case drain flow on a travel motor?

Expert Answer

To measure travel motor case drain flow, disconnect the case drain line and route it into a clean container of known volume. Run the machine with the motor at low, steady operation, then time how long it takes to collect a measured amount of oil. Convert that to flow (for example, volume divided by time). Use the same oil temperature and test conditions each time so the results are comparable. Excessive flow usually points to internal leakage in the motor, seals, or wear surfaces, while very low or no flow can indicate a blocked drain line.

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Answered by VANROCK specialists · Published 8/8/2026