The new smaller M806419 oil filter

nekret said:

So after seeing the step down in size from the oil filter that came on my 4066r to the oil filter that came in my filter pack and then seeing the M806419 filter get a revision to be about the same size as the filter on my L111 garden tractor I couldn't help myself and had to cut one of the new M806419 filters open to do a comparison.

Inside I found pretty decent looking construction on both in terms of consistently spaced filter pleats but the measurements on the filter media I thought was a little concerning.

Filter that came on the tractor (Yanmar?): 82.75"*1.75" -> 144.91 sq. in.
JD M806419: 66"*1.5" -> 99 sq. in.
Difference -> 46% increase in filter surface area for the Yanmar.

Also there are some pretty significant differences in core and spring construction, one win for the JD filter though is it looks like it has an additional hole for the inlet.

I ordered a Yanmar 129150-35170 as I think its probably the filter that came with the engine but will do a rough size comparison when it arrives.

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It's nice to see others opening up the filters and having the tools to do so properly.... Sure, you can hack saw the filter open, but it contaminates it with metal shavings which we don't want for true filter inspection purposes. For those not familiar with the tool laying in the OP's photo to the right of the filter, it's his canister filter inspection tool.

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Anyone who does their own vehicle service should have an canister filter inspection tool in your tool box. It's very helpful to be able to open the hydraulic fluid filters, engine oil filters and canister fuel filters to see if there are signs of trouble within the filter media. You can get a tool adequate for the occasional use interval of the machine owner who performs their own service for $35 to $60. These tools will meet the needs of 99/100 people performing their own machine service.

Personally, I like the oil inspection tools with two rollers on the base of the tool, verses just one, as it helps keep the filter canister centered easier when using the tool. This is the style of canister inspection tool I use and am happy with. Doesn't have to be this particular brand, but this one has served me very well.





If you are a service professional or opening canister filters often (such as racing where the oil and filter is changed every race or even more often) buy a higher quality tool with replacement parts available. The only parts which wear and will need eventual replacement are the cutter edge and the rollers as long as the adjustment (threaded) parts are metal. You can get a great quality professional quality tool for under $120.

If you are seeing metal dust in the bottom of the oil drain pan or other fluid drain container or if you have fuel system contamination issues, if you have the filter inspection tool, you can open the filter and see just how much debris the elements have or have not caught. If you think the debris in the bottom of the drain pan is disturbing, make sure you open the canister filters to see what's REALLY going on......and do so in a way which doesn't contaminate the filter media so what you find is useful in your diagnosis.

Using this type of tool will also show you the profound difference between high quality and low quality filters. Note, I didn't say the difference between the high cost and low cost or high price and low priced filters, I specifically and purposely meant the difference between good and bad filters. Don't think that price is entirely aligned with quality, because that isn't the case. Not even close.

The main things I look for in the canister inspection tools include

• The aluminum housing which is threaded to permit the tool to accept a wide size range of canister filters, from the small JD Filters to the larger canister filters found on large diesel engines, etc.
• Easily adjustable to filter size, usually by turning the tools handle, etc.
• Generally the tool works by laying flat on the surface and the filter canister is rotated within the static location of the inspection tool.
• Plastic tools will NOT work in this setting as the plastic won't hold the threads, etc.and apply the long term pressure to the cutting tool edge. Don't waste your time or money on plastic component filter inspection tools.
• Also keep in mind this tool is also able to be used on spin on FUEL FILTER canisters, which is both very handy to have and can be crucial in heading off fuel contamination issues with organic growth within the fuel.

If your fuel is contaminated and growing algae, the fuel filter canisters are going to show this algae growth within the filter element material. Treating this "infection" ASAP and monitoring the fuel system post treatment to make sure the problem has been eliminated is also very important. No better way than to see what the filter is catching.

Anyone who performs their own machine service should seriously consider having this type of canister filter inspection tool within their toolbox. Opening the filters to inspect them is a very good habit to make part of your service ritual.