ceb58
Has any one ran into a problem with the radiator hoses on the Generac's with the 3.0 JD engine? What I am finding is there is a reaction between the antifreeze and the metal the goose necks were formed out of. I have two 40kw units that the build up has caused the hose to swell enough that the clamp cuts into the hose causing it to leak.
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douglas123
Haven't seen that particular problem YET. How old are these units? Do they have the russian radiators? Is the coolant red? Probably Fleet brand coolant. How old is the coolant? Have you taken a DCA/Sca test strip on the coolant to check the ph level? Are you seeing any white powdery corrosion? Looking forward to a resolution to this mystery.
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ceb58
douglas123;9837 wrote:
Haven't seen that particular problem YET. How old are these units? Do they have the russian radiators? Is the coolant red? Probably Fleet brand coolant. How old is the coolant? Have you taken a DCA/Sca test strip on the coolant to check the ph level? Are you seeing any white powdery corrosion? Looking forward to a resolution to this mystery.


The units have a mfg. date of 08. but were not put into service until 09. So far they are the ones with the Russian radiators. The coolant is the factory coolant as they are just now hitting 2 years old and haven't been changed yet. The problem I have had so far is a crystal build up on the goose necks on the block. The build up swells the hose to the point the clamp cuts the hose. Have been told that it is due to a cheap aluminum mix in the plate with the goose necks but Generac nor JD will admit to a mfg. defect. The hoses are clean as the day they left the factory on the radiator side.
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douglas123
I would agree with the inferior metal of the goosenecks on the engine side. When you mentioned that I recently ran across a 2.5 Nissan engine sad to say it is in our wharehouse for backup power and demonstration purposes and noticed coolant under the unit. Pulled the gooseneck and was appalled at the calcium buildup on the inside. It had literally eaten thru the metal if you can call it metal. Haven't had time to test a coolant sample yet. It appears we have some type of dissimilar metal electrosys going on here. Might be worth a look and see what the inside of your goosenecks look like.
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