Cat Mini Excavator-How to (and how not to) change Engine and Final Drive oil & Fuel/Water Separator

[@jasonhooft5803]

Thanks for the video this was very helpful. I just did the same job on my 2017 304E2. On mine there is a fuel primer pump on the left side of the oil fill cap that needs to be pumped to prime once the fuel filter has filled and the top filter vent bolt closed off. For gear oil replacement I blew pressurized air in the top fill hole which helped speed up draining and fully removing old oil. The other comment about metal in the oil is likely incorrect - those are bubbles in the oil not metal. There also is another in line small fuel filter to replace - this one had a little junk in it on mine.

[@JerichoRally]

Good stuff man, thanks! I'll have to look again for that other fuel filter.

[@OSkooterJ]

Appreciate it. It’s my first time doing this. Big help

[@chrisferri5870]

My machine is acting just like yours. Thanks for the tutorial

[@vicdean7393]

I know this is old but on fuel filter change and prime, if you unscrew black knob on side of fuel filter housing, that will bleed air out of filter. Just crack it open some while priming.

[@mrwhigham]

Good video bro. Thank you 😊

[@jfitz9624]

They all come up at once because the PM interval is the same for All, 500hrs. Engine oil and filter, fuel filter, hydraulic oil filter an air filters. They say the final drive interval is 1000, but only do that if you like replacing $5000 final drives. Do it every 250. Each hold about $6 worth of oil. I’d also do engine oil and filter at 250. The fuel tank filter is small inline filter before the big fuel filter.

[@nathanielmoore5677]

What oil for 2015 304 final drive?

[@homeland5686]

Thanks for the video, what would you use as a hydraulic fluid? Use only their own Cat fluid, or others are perfectly fine and if so which ones? Also I noticed that instructions call for 70-140 final gear oil, yet, when I called service they say it 80w-90, so which one? Let me know your recommendations thanks again

[@jesseakers7298]

Wow, could not see that oil good coming out of the final drive but it's looking like 30 % finely ground metal. I would have liked to have stuck my fingers in it.

[@JerichoRally]

She runs like a top!

[@stephenchadee3173]

Thank you!!!

[@HuyNguyen-fv4qn]

Good video ❤, how much for filter and oil? I'm using komatsu machine but want change to Cat. Don't know about the maintaince cost...