Leaking coolant seals on Diesel generators is a common occurrence and is caused by loose components, deteriorated seals, and incorrectly fitted components where the seal has been incorrectly tightened and has been trapped or twisted prior to being fitted. Jubilee clips can work loose or rust deteriorates them to loose grip.
The main reason is usually a lack of regular maintenance. Leaks can be spotted early as long as weekly service checks are carried.
Components can come work loose through vibration caused by a running generator, or through the use of non-genuine seals, which may not fit correctly.
Seals, steadily deteriorate through age and by running at extremely high temperature for long periods. Seals should be replaced during routine maintenance.
If the generator is in a high temperature environment or a very dry environment then the seals can crack and shrink.
The most obvious reasons for leaking seals are the lack of regular servicing and / or lack of regular maintenance of the generator.
Check seals are all tight and check to make sure that the seals haven’t been trapped when tightened.
Visually check for signs of wear and any build up of residue around any seal
Check under the generator and trace back any water leak to find the source of the leak.
If in doubt replace the seals.
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