Waukesha L5792DSU Engine on test after a rebuild for one of our clients.

Waukesha L5792DSU – When the basics can lead to engine failure



As I write, our engineer, Fraser, is out on a customer’s site carrying out a repair on a Waukesha engine.

But it could have been so much worse than just a repair.

Thanks to the crew’s diligence with the pre-start checks, they were able to spot the signs of an internal failure before major engine damage and flag the issues to us before the engine was run into the ground.

With 99% of pre-start checks not showing any signs of problems, it is easy for complacency to kick in and these vital steps being overlooked.

But by having the right procedures in place and carrying them out properly, there are so many costly problems that can be prevented.

In this case, by checking the coolant and oil levels before start-up, the crew could see that coolant was getting into the oil, so we attended the engine and found this with the borescope.

You can see the results of a cracked liner.

So, the purpose of Fraser’s visit is to change the one liner and flush the oil ways, rather than having to carry out a major overhaul, which could have been required if the engine was run before further investigation.

If you’ve not come across the effects of water in oil, you can see what it looks like here.

If you are not sure of the right pre-start checks to carry out, email us, info@bartechmarine.com or call +44 (0)1206 673101, and we can look at what you have in place at the moment.

Signup to receive our newsletter

Simply enter your details below to be kept up to date

  • This field is for validation purposes and should be left unchanged.

Engineer Resource Vol. 2 is now out for FREE download. Get your copy now!

A collection of articles to help you improve engine reliability, performance and safety specifically for engineers, brought to you by Bartech Marine. Simply enter your email below to get instant access.

  • This field is for validation purposes and should be left unchanged.

By completing this form you are agreeing to our privacy policy.

free engineer resource guide