Hydraulic Oil Filter Advice
- Thread starter mailman
- Start date
- Views: 4466
jonyyuma
Elite Member
- Joined
- Sep 14, 2010
- Messages
- 2,922
- Location
- 35 miles North of Memphis,TN
- Tractor
- kubota L3000dt, ford 8n1952
Does the problem repeat? Sounds like drill shavings from Mfr.? Jy.
dodge man
Super Star Member
I had some on the little screen when I cleaned it the first time on my BX. I'd say its normal the first time, but I'd think it would clean itself out and they shouldn't keep showing up.
jonyyuma
Elite Member
- Joined
- Sep 14, 2010
- Messages
- 2,922
- Location
- 35 miles North of Memphis,TN
- Tractor
- kubota L3000dt, ford 8n1952
Yes, and I have never taken the pan off an automatic transmission, for the 1st time and it not have said shavings.Usually not many the next time. Is there a magnet involved on your machine?
Jay4200
Veteran Member
- Joined
- Nov 23, 2005
- Messages
- 2,054
- Location
- Hudson/Weare, NH
- Tractor
- L4200GST w/ LA680 & BX2200D w/ LA211
This is the second time in two days I've heard reference to this hydraulic filter magnet. Where exactly is it?
JayC
moship
Veteran Member
Mailman,
Normal does not mean it is good.
While others have seen metal shaving in the filter making it "normal" it does not constitute there is not a problem or design flaw.
Metal can come from different sources.
1) Machining drilling, tapping, boring, etc. This should be cleaned/removed before the part is assembled. Any left over machining spirals, chips, shavings, etc are simply poor quality and someone taking a short cut in the manufacturing process. It is very common practice to wash internal machined parts before assembly.
2) Wear these will be very fine particles and to some degree can be expected, but again points to overall design flaws or cost/benefit tradeoffs during the design phase. Ex: Improper lubricant film, improper material hardness, etc.
3) Abuse Ex: jamming gears together leading to parts breakage.
Have the dealer put their comments in writing and send a copy of the document along with photographs or samples of the metal to Kubota for an official response. Ask them if this constitutes normal and meets their quality standards. (If it does meet their quality standards perhaps they are willing to quantify when does it become too much?) Ask the dealer if they would mind putting these shavings into their personal car since it is ok.
Does this mean you will have long term problems? Who knows? I for one would not stand for it though.
Does the hydraulic filter have a bypass in it? If it does, it is possible these shavings went through the system before being caught by the magnet/filter.
Remember the only incentive the manufacture has is to get you through the warranty period. After that you are on your own and where do you have to go for replacement parts? How long do you plan on owning your tractor?
Normal does not mean it is good.
While others have seen metal shaving in the filter making it "normal" it does not constitute there is not a problem or design flaw.
Metal can come from different sources.
1) Machining drilling, tapping, boring, etc. This should be cleaned/removed before the part is assembled. Any left over machining spirals, chips, shavings, etc are simply poor quality and someone taking a short cut in the manufacturing process. It is very common practice to wash internal machined parts before assembly.
2) Wear these will be very fine particles and to some degree can be expected, but again points to overall design flaws or cost/benefit tradeoffs during the design phase. Ex: Improper lubricant film, improper material hardness, etc.
3) Abuse Ex: jamming gears together leading to parts breakage.
Have the dealer put their comments in writing and send a copy of the document along with photographs or samples of the metal to Kubota for an official response. Ask them if this constitutes normal and meets their quality standards. (If it does meet their quality standards perhaps they are willing to quantify when does it become too much?) Ask the dealer if they would mind putting these shavings into their personal car since it is ok.
Does this mean you will have long term problems? Who knows? I for one would not stand for it though.
Does the hydraulic filter have a bypass in it? If it does, it is possible these shavings went through the system before being caught by the magnet/filter.
Remember the only incentive the manufacture has is to get you through the warranty period. After that you are on your own and where do you have to go for replacement parts? How long do you plan on owning your tractor?
jonyyuma
Elite Member
- Joined
- Sep 14, 2010
- Messages
- 2,922
- Location
- 35 miles North of Memphis,TN
- Tractor
- kubota L3000dt, ford 8n1952
Some of the original Hyd.filters for Kubota, and maybe others, has a Magnet inside the top of the filter. I added magnets to the outside of my engine oil filter,because I like the idea. Some metal oil catch pans also have a magnet inside. Simular to the oil magnet drain plugs for cars and trucks of yesteryear.
gwdixon
Elite Member
It really doesn't matter how old it is. Rather, how many hours are on it and how many times the filter has been changed.
Also, did the oil get changed at 50 hrs. or was only the filter changed (new Kubota instructions)?
There is nothing inside of the engine that would create regular spiral metal shards. They are created in the manufacturing process and may not have all been cleared on your first oil change (if that has been done) or even the second change. Some units have more debris than others for some reason.
I don't think that there is a screen on that model like the BXs have but check the manual anyway. Those screens can really pick up a lot of stray metal chunks.
I am new at this, but I think I have uploaded a picture of one of the bigger pieces from the magnet.http://www.tractorbynet.com/photos/showphoto.php/photo/8882/ppuser/107351
It is the Transmission oil filter (HST) and there is another filter for the Hydraulics, they share the same oil.
I'm around 300 HRS on the tractor now. At 50 HRS the filter had filings on it, but seemed reasonable except for one slightly larger piece. I decided to check filter at 100 HRS and that is when I found these shavings ??? Also in the 200 HR
The dealer insists that that is what the filter and magnet is for, to catch metal filings ect.
I agree that the filings should be caught by the magnet, but the metal shavings should have never been there to be caught.
It is the Transmission oil filter (HST) and there is another filter for the Hydraulics, they share the same oil.
I'm around 300 HRS on the tractor now. At 50 HRS the filter had filings on it, but seemed reasonable except for one slightly larger piece. I decided to check filter at 100 HRS and that is when I found these shavings ??? Also in the 200 HR
The dealer insists that that is what the filter and magnet is for, to catch metal filings ect.
I agree that the filings should be caught by the magnet, but the metal shavings should have never been there to be caught.
Last edited:
AbeK
New member
I found the same shavings you describe in my L2250. The magnet @ the top of the filter was full of these shavings, the filter element itself had quite a few of them and the bottom of the filter canister held a good spoon full of them as well. My tractor is a shutle shift, it is an 1986, and shows 1722 hours. I bought this tractor last fall at an estate auction. I am wondering whether this filter has ever been changed before or is there an internal problem causing this. My guess is that it may never have had a hydrolic fluid and filter change before.
Abe.
Abe.
jonyyuma
Elite Member
- Joined
- Sep 14, 2010
- Messages
- 2,922
- Location
- 35 miles North of Memphis,TN
- Tractor
- kubota L3000dt, ford 8n1952
Those shavings look like they came from drilling parts of the housings, when Mfr. Why they are still sticking around is a good question. .
ryer
Bronze Member
dodge man
Super Star Member
I don't have a good feel for how a HST operates. I know the first time I pulled the pan on a automatic transmission on a car I was shocked at the crap in the bottom of the pan, buts its considered normal. I don't know if its normal for a HST or not.
Last edited:
art
Super Member
To me that is a piece from manufacturering not something from use. It is common on new machinery to see this regarless of make or use.
The more machining it took, the more you might find!
The more machining it took, the more you might find!
Grateful11
Veteran Member
Ours only had a very minimal amount of iron/steel dust on the magnet at 60
hours. Spiral shavings tells me someone didn't do a good wash out after
machining and before assembly.
hours. Spiral shavings tells me someone didn't do a good wash out after
machining and before assembly.
Tell the dealer the next time he has surgery it's normal to be crapping pieces of thread and cotton balls for a few weeks, it's just his body filtering that stuff out.
oldnslo
Super Member
Mailman,
a couple of questions.
Kubota site says that the L4400-1 HST series has:
DRIVE TRAIN
Feather Step HST
Hydraulic Pedal Assist
Cruise Control
Maximum Travel Speed 14.9 mph
Multiple Wet Disc Brakes
Clutch Dry Type Single Stage
Differential Lock
Are the brakes immersed in the same fluid as what is going through the filter in question? If yes they create debris by default. Spiral chips I would question but possible depending on the design of the brakes
Where is this filter located in the system? Charge pump inlet, a return line, etc. Depending on location of the filter the chips may be getting caught before they have a chance of getting into a major component.
Are all of the particles magnetic? or a mixture of steel, brake fibers, aluminum, etc.
Roy
a couple of questions.
Kubota site says that the L4400-1 HST series has:
DRIVE TRAIN
Feather Step HST
Hydraulic Pedal Assist
Cruise Control
Maximum Travel Speed 14.9 mph
Multiple Wet Disc Brakes
Clutch Dry Type Single Stage
Differential Lock
Are the brakes immersed in the same fluid as what is going through the filter in question? If yes they create debris by default. Spiral chips I would question but possible depending on the design of the brakes
Where is this filter located in the system? Charge pump inlet, a return line, etc. Depending on location of the filter the chips may be getting caught before they have a chance of getting into a major component.
Are all of the particles magnetic? or a mixture of steel, brake fibers, aluminum, etc.
Roy
Here are some similar links:
