Filings in filter

[Summitsrule]

Hey tractor guru痴.

Doing my 800 hr service on my 2011 L3940HST with a cab, owned since new.

When I pulled the oil filter on the transmission, (which I believe is the suction filter for the pump) I found a significant amount of filings. Some look like drilling filings. All magnetic. Trying to attach a picture. What are your thoughts. HST filter was clean, going to dig in the oil drain bucket now to see if I find more.

FYI about maintenance, it痴 all been done as per the manual, by me, except the 400 hour.

50 hr got both transmission filters.
200 hr got both filters again.
Dealer did 400 hour transmission oil and both filters again.
600 hour got both filters again.
Here I am at 800 hours doing the big service myself.

I can稚 say I致e e seen filings like this before but my memory isn稚 perfect. I would think I would remember seeing this. One thought is every time I replaced filters the oil was pouring out as I spun off the filters and it may have washed the filings into my bucket and I missed seeing them. This time I drained all fluids, then spun off the filters.

I don稚 like what I知 seeing but it looks like crap from when machined when new. But then again I am certain I never saw thus till now.

Tractor works normal, never had any failures either.

Should I be concerned? Snow is coming fast, I知 about to mount my front mount snow blower in for the winter, and I am very busy so I値l either forget about it for the winter and pull the filter again in the spring, or if it痴 something that has been seen before and I need to do a repair I知 trading it in tomorrow.

Thanks in advance.

 

[Summitsrule]

Not sure why my message is all messed up??

And not sure how to attach a picture.

 

[nybirdman]

I wouldn't be too concerned myself;filter did it's job.I wouldn't trade;the "40" series are good tractors and no pollution controls.
Yours is low hours too;I have 1200 on mine(L4240).

 

[Summitsrule]

Wish I could upload the picture. I壇 say there is enough filings to half fill a 1 once shot glass.

 

[SDT]

Wish I could upload the picture. I壇 say there is enough filings to half fill a 1 once shot glass.

That's a lot, particularly after multiple filter changes.

Do you always return the engine to idle before turning off the PTO?

SDT

 

[radios1]

Not sure why my message is all messed up??

And not sure how to attach a picture.

something messed up with Unicode characters. I ran into that before. "¥" is the unicode character for YEN, the Japanese currency. there are other unwanted Unicode characters being posted here too. such as € the English Euro sign replacing the characters you mean to post. I believe this is a problem for the Administrator to fix.. I use Western text encoding in my browser, perhaps you have yours set to Unicode?. I don't get that problem anymore..

 

[Summitsrule]

That's a lot, particularly after multiple filter changes.

Do you always return the engine to idle before turning off the PTO?

SDT

Almost never. And I use my pto a lot, meaning from on to off and off to on. I do drop the rpm but to an idle, no definitely not. For tilling, I have many short runs to till, and don稚 like the banging the tiller makes when it痴 not in the dirt. Wouldn稚 that just wear on a clutch that engages the PTO? This is not clutch material in the filter from my best guess.

Maybe it痴 time to read the manua

 

[Summitsrule]

something messed up with Unicode characters. I ran into that before. "･" is the unicode character for YEN, the Japanese currency. there are other unwanted Unicode characters being posted here too. such as € the English Euro sign replacing the characters you mean to post. I believe this is a problem for the Administrator to fix.. I use Western text encoding in my browser, perhaps you have yours set to Unicode?. I don't get that problem anymore..

Just using Safari on IPhone?

 

[MHarryE]

Typical of Grand L’s. Not sure why somebody didn’t chime in right away. My L3710 and L5740 had lots of filings on the magnet even on their second change (traded the 3710 for the 5740 at 800 hours, traded the 5740 for current L6060 at 850 hours). Found lots of pictures here that looked even worse than mine. Can’t be sure yours doesn’t have a problem but I do know that if the magnet was clean of machining debris at an oil change prior to 1,000 hours, it would be unusual.

 

[Summitsrule]

Typical of Grand L痴. Not sure why somebody didn稚 chime in right away. My L3710 and L5740 had lots of filings on the magnet even on their second change (traded the 3710 for the 5740 at 800 hours, traded the 5740 for current L6060 at 850 hours). Found lots of pictures here that looked even worse than mine. Can稚 be sure yours doesn稚 have a problem but I do know that if the magnet was clean of machining debris at an oil change prior to 1,000 hours, it would be unusual.

Thanks, I feel better about it now. See what she looks like at 1,000 hours I guess.

 

[moship]

They shouldn't be there from the start and is indicative of A) poor machining techniques to minimize chip size, B) poor cleaning procedures and/or C) lack of adherence to washing procedures after machining. The fact that Kubota continues to have this takes place questions their commitment to continuous improvement.

Having said that, there is no way to say if it causes damage or not. It's great the filter is catching it, but did it do damage or restrict flow causing undo strain on other systems? Who knows...
Could it be why some folks complain of excessive hydraulic noises?

Nobody can say with proof component life is not impacted by it. It would be interesting to see an A versus B Test to Failure using Weibull analysis to determine if differences in B10 Life existed between a clean hydraulic fluid passages versus one contaminated with metal chips restricting the flow passages.

Do some people see chips in their filters? Yes
Has this continued for more than 10 years? Yes
Is component or system life impacted? Cannot say without data

Take a picture of the material with a brief history of the maintenance and send it to Kubota. This way you'll be certain your voice is heard.

If anyone says it won't hurt or doesn't matter, ask them to poor the chips into their personal vehicle.

 

[SDT]

Almost never. And I use my pto a lot, meaning from on to off and off to on. I do drop the rpm but to an idle, no definitely not. For tilling, I have many short runs to till, and don稚 like the banging the tiller makes when it痴 not in the dirt. Wouldn稚 that just wear on a clutch that engages the PTO? This is not clutch material in the filter from my best guess.

Maybe it痴 time to read the manua

Maybe. Maybe not.

The M9 series tractors were sold with inadequate PTO brakes for years. It was not uncommon for the PTO brakes to fail catastrophically resulting in considerable metal in the oil.

In any event, it is good practice to return the engine to idle before turning off the PTO with any type of inertial load.

SDT

 

[5030]

Almost never. And I use my pto a lot, meaning from on to off and off to on. I do drop the rpm but to an idle, no definitely not. For tilling, I have many short runs to till, and don稚 like the banging the tiller makes when it痴 not in the dirt. Wouldn稚 that just wear on a clutch that engages the PTO? This is not clutch material in the filter from my best guess.

Maybe itç—´ time to read the manua

Might be enlightening. Sometimes I wonder if manuals should be optional equipment....

 

[nyone]

It may be time for a filter magnet and a filter cutter. Haveyou opened up the filter you took off?

 

[Jchonline]

It still amazes me that anyone would spend $20k + on something and not read the manuals at least twice. Don't worry OP you are not alone...there are many that just refuse to read until things go badly. I am not saying it has anything directly to do with your issue.

 

[CobyRupert]

Why do some, but not other, tractors have a PTO brake?
Seems like a good candidate for a pto overrunning coupler.

 

[ptsg]

Why do some, but not other, tractors have a PTO brake?
Seems like a good candidate for a pto overrunning coupler.

Electric over hydraulic PTO engagement will have PTO brake as it's incorporated on the clutch pack. Whenever the PTO switch is turned to OFF, the pressure is released and a spring pushes the hub against a brake disc.

Other than being a safety measure for all those security identities, it doesn't really have any benefit on the operation of the tractor.

Those PTO brakes will usually burn out quite really fast, specially with high momentum implements like mowers. Plus it's an absolute pain not having a way to turn the PTO shaft by hand when hooking implements, at least on tractors with single PTO speed. Others just set the PTO lever to neutral.

Overrunning PTO couplers or PTO shaft extensions for that matter, won't do any good to the tractor either as it extends an already unsupported shaft even further and still adds an extra wobble to it. So the PTO shaft seals and bearings are not going to like it. Tractors with aluminium transmissions cases will definitely not going to like that.