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Old 09-17-2024, 03:52 PM   #1
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8k Onan Generator 2021 Dynamax Force 34KD

Purchased used and wanting to change out Fuel, Air and Oil filters on my 8K Onan Generator. No manual. Found very little online except on how to do it. Seems pretty simple.

Can anybody help as far as Filter Make and Models needed?

Thanks

Jeff
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Old 09-17-2024, 04:08 PM   #2
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There is usually a label on the generator with the applicable Onan part numbers. You should be able to cross reference them at rockauto.com
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Old 09-17-2024, 05:29 PM   #3
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Amazon has what you need.


2 tips: be sure the o ring on the old oil filter comes out with it, I didn't and it made one heck of a mess when I started it


there is a plug in the exhaust you'll need a long extension to remove. Remove it before starting to allow any deposits/debris to blow out, the re-install
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Old 09-17-2024, 05:33 PM   #4
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Thanks for the information. Need to go out to the storage facility and look at the model.
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Old 09-17-2024, 06:46 PM   #5
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My Berkshire has a spec sheet(inside the medicine cabinet) listing all the appliance models & serial #s. If yours does, take a picture of it so you can refer to it w/out having to be at the RV.
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Old 09-17-2024, 07:02 PM   #6
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Here's the part numbers I use. You need to look at your ID plate and see what model generator you have. Mine is -- Model - 8HDKAK - 1046p
Air -- 140-2897
Fuel -- 147-0860
Oil -- 122-0833

Edit: I use Amazon as well. But sometimes Cummins is cheaper. https://shop.cummins.com/SC/
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Old 09-17-2024, 07:50 PM   #7
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Your money - your choice, but personally I wouldn't buy filters from Amazon due to all the counterfeits showing up there.
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Old 09-17-2024, 10:23 PM   #8
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Rocky Mountain Generator Supply sells the Onan Q8000 maintenance kit. Oil Filter, Fuel Filter and Oil. I've talked with them, ordered from them and had great service.


https://rockymountaingeneratorsupply...t-Quiet-Diesel
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Old 09-18-2024, 07:05 AM   #9
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It is easier to change the oil etc... on the generators in a Dynamax by removing the front cover. The screws line both sides, then you can see what you are doing, reach inside to do the maintenance. Just FYI.
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Old 09-18-2024, 01:18 PM   #10
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Quote:
Originally Posted by Lubehead View Post
Amazon has what you need.


2 tips: be sure the o ring on the old oil filter comes out with it, I didn't and it made one heck of a mess when I started it


there is a plug in the exhaust you'll need a long extension to remove. Remove it before starting to allow any deposits/debris to blow out, the re-install
Watch out buying filters from Amazon, there has been several cases of bogus products that are labeled to look like brand name but are actually copies. Seams were separating and causing major problems. As stated above.
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