Onan 12kw diesel generator water pumps

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Pcravens
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Onan 12kw diesel generator water pumps

Post by Pcravens »

I have a 12 kw diesel generator that will run 10 to 15 minutes n shuts off because it over heats. Had a guy rebuild or so he said he rebuilt the raw water pump. Where can I get new pumps or rebuild kits for both the engine pump and the raw water pump. OMDJC-3CR/2268AA. Serial number H790443537. Thanks
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prowlersfish
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Re: Onan 12kw diesel generator water pumps

Post by prowlersfish »

I would check the exhaust riser for restiction. As far as the pump Check with Bob at Beacon marine, Depco pumps or Cummins/Onan dealer.
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
Pcravens
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Re: Onan 12kw diesel generator water pumps

Post by Pcravens »

Do I just take all the plugs out of it n try to flush it or take it off
Pcravens
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Re: Onan 12kw diesel generator water pumps

Post by Pcravens »

Also some one has replaced the original engine coolant pump with a Oberdorfer 50R 35
Pcravens
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Re: Onan 12kw diesel generator water pumps

Post by Pcravens »

Took pumps apart cleaned them impeller look good , put back on. Took all the plugs out I could find n hoses on the heat exchanger off , blew through all of them and all the hoses put all back together filled with antifreeze now it’s running like it should so far. Ram it over a hour with both air conditioner on n other stuff running pulling a load with no issues.
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prowlersfish
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Re: Onan 12kw diesel generator water pumps

Post by prowlersfish »

Pcravens wrote: Tue Jun 21, 2022 12:43 pm Also some one has replaced the original engine coolant pump with a Oberdorfer 50R 35
I have not heard of anyone yet.
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
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