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Hawk Power Lister Petter GS12P

Posted: Tue Jun 16, 2020 7:10 pm
by dppayne123
I’m trouble shooting a genset and it immediately goes to overspeed when it starts. The frequency goes up to 84-89 HZ before it shuts down. I’ve replaced the speed control and magnetic pick up. Need help please.

Re: Hawk Power Lister Petter GS12P

Posted: Tue Jun 16, 2020 8:01 pm
by Birken Vogt
Hawk Power LP was kind of a weird brand. Give us some pictures of the engine, governor and controls and we will know better what it is and how to work on it.

Re: Hawk Power Lister Petter GS12P

Posted: Mon Jun 22, 2020 8:55 am
by dppayne123
56D364B8-3AEC-44EB-AC0E-70B54555BFAB.jpeg
56D364B8-3AEC-44EB-AC0E-70B54555BFAB.jpeg (171.78 KiB) Viewed 535 times

Re: Hawk Power Lister Petter GS12P

Posted: Mon Jun 22, 2020 10:09 am
by Birken Vogt
That is a strange one for sure. But Onan/Cummins was making one from the mostly the same parts in those years. The GCU looks similar but not identical to Cummins. What is the brand and model on the GCU? I assume the upper 4 wires are power in and the output to the actuator and it looks like the lower 2 are for the MPU. What is the throttle actuator doing when it starts up and immediately goes overspeed?