11-07-2015 09:37 PM
A serial number be helpful for what you have. Also a target rating on what you want to get on Natural Gas.
If this is an older engine than changes to the carburators and fuel pressure regulators may be all that is needed. Ideally you should consult your local CAT dealer.
More details from you will result in a bettter answer, otherwise the best answer is, "it depends".
11-06-2015 06:32 PM
What are the concerns wrt rating, reliability, and safety factors I would have in order to convert a G3516 landfill unit to run on natural gas?