Our engineer Andy has just finished resolving a fuel control problem, and I figured I’d share it with you as it might help if you have a similar issue.
The problem was caused by a Woodward PSG governor fitted on a cruise vessel’s Daihatsu 6DL-20 generator engine.
The operator had tested the governor on board but found that when it reached the right temperature, the oil pressure was dropping. Once the governor had arrived in our workshop, we pretested it and found that when the oil temperature was at 138°F the oil pressure started to drop to less than 100psi instead of the 220psi it should have been.
Not only that, but the governor output lever could be moved by hand, indicating the governor was not developing enough power to operate the engine fuel racks correctly.
Why had this happened?
A combination of wear in the case and the internal components.
What the operator didn’t know was that the cases for these governors had been upgraded from aluminium to cast iron to reduce this problem and in fact, this model had been superseded by a cast iron version.
The problem with the old style aluminium case is that it wears quicker when carbon particles in the engine oil are picked up and act as an abrasive. Once the governor was overhauled and converted to a cast iron case, it was holding pressure – problem solved!
By using and browsing the Bartech Marine Engineering website, you consent to cookies being used in accordance with our policy. If you do not consent, you must disable cookies or refrain from using the site.
Here to keep your critical engines running in 2 easy steps during COVID-19 outbreak
Call 01206 645070 anytime to speak to an engineer to help you resolve issues yourself. This is a free service, intended to minimise downtime and stop the need for a visit
If things cannot be resolved on the video call, our service engineering team are ready to attend your site. They are home based with stocked vehicles ready to deploy.
All our usual support is still available on the general number and email address