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Maintenance on the hydraulic system

S

SVcummins

Well-known Member
Well I posted the other day about a hydraulic noise. Finally got the tractor home and pulled the hydraulic filter to find it plugged with the cylinder packings from my blown farmhand loader cylinder. Went ahead and drained the oil and checked the pickup screen it was clean
a280792.jpg
 
It's good you caught it when you did. Don't want the filter plugging up so much that it bypasses & that crap makes it's way into the rest of the system.
 
Unless you are returning the oil to the filter housing, the suction screen should have caught most of that. Another thing you can do is install a cleanup filter, run it for 50 hours and replace it with a standard hydraulic filter every 500 hours. You would be surprised how much junk and fines the cleanup filter catches especially on an older high hour tractor.
 
Do you happen to have a part number for the cleanup filter ? The screen was clean not even a spec of anything on it . Loader plumbs into the rear remotes
 
(quoted from post at 14:10:33 09/23/18) Unless you are returning the oil to the filter housing, the suction screen should have caught most of that. Another thing you can do is install a cleanup filter, run it for 50 hours and replace it with a standard hydraulic filter every 500 hours. You would be surprised how much junk and fines the cleanup filter catches especially on an older high hour tractor.
Click to expand...

NOT sure what your thoughts are here, it's considered "good practice" to return oil from a loader (I'm GUESSING that's what he meant by "Farmhand") so it passes through the hydraulic filter, rather than return it "to sump".

And isn't it BETTER that the packing debris was caught in the filter, rather than by the sump screen?

Also, if it had wound up in the sump, at least some of it would have passed through the gears, and got ground up into fine particles that could potentially even wind up in the fine screen in the main pump stroke control valve.

Personally, I'd sure be happy to see it in the filter rather than in the sump!
 
(quoted from post at 15:03:21 09/23/18) I?d like to get the loader plumbed in so it runs off the
tractor than using the outlets .
Click to expand...

Well, the factory "outlets" return to the filter and on to the cooler/front pump charge circuit, so it's good in that respect.

I have a 4020 with a 3100 DuAl loader and operate it from the factory valves, as well. Not the ideal setup when you occasionally want to use the remotes for something else. but gets the job done.
 
(quoted from post at 08:06:08 09/24/18) I could be wrong but I don't think the AR98098 will work in place of the AR75603. I think it is about 2.5 inches taller.
Click to expand...

Ditto on 20 series tractors AR98098 requires different filter cover & longer attaching screw

mvphoto24113.png
 
So can I get the longer cans and bolts and convert my 20 and 30 series to the larger filter? That way I only have to stock on filter. Also I believe the 30 series with hfwd used the larger filter.
 
Can you elaborate on this "clean up" filter?

Is it one in the same as the longer filter & housing that TxJim posted? If so, why replace it with the shorter factory filter after the contamination is removed? Seems as though the added capacity would be desirable to have all of the time.........


(quoted from post at 12:10:33 09/23/18) Another thing you can do is install a cleanup filter, run it for 50 hours and replace it with a standard hydraulic filter every 500 hours. You would be surprised how much junk and fines the cleanup filter catches especially on an older high hour tractor.
Click to expand...
 
(quoted from post at 10:11:14 09/24/18) So can I get the longer cans and bolts and convert my 20 and 30 series to the larger filter? That way I only have to stock on filter. Also I believe the 30 series with hfwd used the larger filter.
Click to expand...

Yes but longer hyd filters cost a lot more than AR75603 @ $10.41 vs AR94510 @ $39.34 or clean up filter AR98098 @ $40.94
 
Can't remember for sure, but I think the longer filters have a smaller micron rating also. Can anyone confirm?
 
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