730 series loader hydraulic fluid capacity

SuperSam · Jan 22, 2013

It's time to change the filter and fluid in my 730 series loader. It's mounted on a 1968, gas, 3400 industrial with a crank driven pump. Can anyone help with info regarding how much fluid I will need. I'm told the filter is an E6NN9R500DA, but not sure of the fluid capacity. The frame assembly is listed as a 19-512. Any help with be appreciated.

RickB · Jan 23, 2013

That number sounds to me like an air filter.
The 12" paper filter is 86546604 and comes with the base gasket. The 9" composite filter is 290417 and the 290397 gasket is sold separately. The paper filter is probably what you have. 730 system capacity is listed @ 10.5 gallons, but unless you purge all the cylinders you won't need much more than 5 or 6. Full level is 12" below the fill/breather cap.

SuperSam · Jan 23, 2013

(quoted from post at 04:45:04 01/23/13) That number sounds to me like an air filter.
The 12" paper filter is 86546604 and comes with the base gasket. The 9" composite filter is 290417 and the 290397 gasket is sold separately. The paper filter is probably what you have. 730 system capacity is listed @ 10.5 gallons, but unless you purge all the cylinders you won't need much more than 5 or 6. Full level is 12" below the fill/breather cap.

You are right about the air filter number, my mistake. I've been doing many filters lately and I got them confused. Thanks for the info on the correct filters and capacity. You save me some heart ache. Thanks. SS

Jetbird · Jan 23, 2013

Hi sam, I did this job on my '68 3400 with 730 loader and I had the 9" composite filter instead of the paper. I don't know when the cutoff was when they changed to the paper type. You need a good size allen wrench to remove the drain plug, bigger than I had so I bought one. I also changed my hoses on my return lines since they looked pretty bad and I didn't want to drain the system again to change them later. They were a bit expensive as I recall for just a couple of short hoses, but not too bad.

SuperSam · Jan 24, 2013

Thanks for the post JB. I got this tractor about a year ago. It had just received a complete engine overhaul and, fortunately for me, all of the hydraulic hoses were replaced. My loader doesn't have a "level check plug". So I've crafted a dipstick made from aluminum stock. Now I can feel that, near the bottom, there seems to be an accumulation of sludge. It's going to be interesting to see what I find when I drop the bottom plate. SS.

Laneman · Jan 24, 2013

I don't think 12" is the correct fill level, in my
730 loader manual on page 18 it states that 8" from
the filler plug opening is the full level. This is
with the loader on the ground and bucket curled back

KFM · Sep 22, 2016

(quoted from post at 17:22:38 01/23/13)

(quoted from post at 04:45:04 01/23/13) That number sounds to me like an air filter.
The 12" paper filter is 86546604 and comes with the base gasket. The 9" composite filter is 290417 and the 290397 gasket is sold separately. The paper filter is probably what you have. 730 system capacity is listed @ 10.5 gallons, but unless you purge all the cylinders you won't need much more than 5 or 6. Full level is 12" below the fill/breather cap.

Click to expand...

I know that three and a half years have passed since you all had the above exchange about hydraulic filters in a Ford 730 loader. Today my local NH dealer told me that he might be able to get the composite filter, 290417, for me for $107 - but he wasn't certain it was still available. PartsSpring and Messick's both list it as discontinued/unavailable - so I cleaned mine as well as I could with some kerosine and put it back into service with new hydraulic oil. Clearly, this is a short-term play. If the composite filters are now unavailable, I need to convert to another filter type.

One option is to buy the parts to convert to the paper filter 86546604, but if I could get them I would pay at least $170 (from Messick's, if they have all the parts). Another option is to discard the original filter, and plumb a spin-off filter between the sump and the pump, maybe hanging it off a bracket that I could weld onto the left loader post. Has anyone done the latter? Can anyone offer advice about doing this? I worry that I would have to put the filter up high to prevent it from getting knocked when moving over debris or rough ground, but too high and the pump might be hard-pressed to pull enough fluid up to it from the sump?

730 series loader hydraulic fluid capacity

SuperSam

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RickB

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Jetbird

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Laneman

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