www.PDHonline.com - Your Gateway to Lifelong Learning   |   Email: PDHonline@Gmail.com   
PDH Online Course Description PDH Units/
Learning Units (Hours)

Buy Now

View Course

View or Take Quiz


Hydraulic Fluid Cleanliness – Understanding Particle Contamination Standards

Lionel A. Sequeira, P.E.

As part of a maintenance program you’ve been tasked to review a hydraulic fluid sample analysis taken from the HPU powering your ship’s steering gear. The report tells you that the sample meets NAS 1638 Class 7, but what does that mean? Is this fluid suitable for the intended service? How does this rating compare with ISO 4406 requirements? Is there a direct conversion between standards? Are there other standards that are currently being used?

This 4 PDH online course will compare various standards use to evaluate hydraulic fluid cleanliness and touch on some of the history associated with these standards as well as the finer details on how to interpret the data. Additionally, basic information regarding fluid filtration will be provided.

This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.

View Course Content

NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.