MT-125 Engine Oil Filter Replacement Issues

mslisaj · Oct 9, 2018

Well I finally have 50 hours on my little tractor and it's time for that service. So I remove the loader and hood, dump the oil and remove the filter. My local LS dealer is a very small tractor dealer and did not stock the filter. So with the part number he sends me to my local auto supply house and through a lot of computer lookup finally ends up going by the engine model number of 3TNV80F. With this information he comes out with a 51365 WIX oil filter and I'm happily on my way. When I get back to the shop and "attempt" to install it I would get about a 1/4 turn and it would cross thread. I'm very careful working with this but after a couple tries this is obviously the wrong filter or there is something wrong with it. I have been in this business for over 45 years and I can't remember every having a defective spin-on that had bad threads. Well I get another filter of the same number and go back to try it but came up with the same results. So now I'm getting kind of desperate and I have a big NewHolland dealer here in town and they had about 10 of the "Workmaster 25" tractors that are built by LS and they sold all of them. So I figured they would have the filter so I go there and to their surprise (and mine) they didn't have one on the shelf. Now I'm contemplating having to install the old filter to get this machine running again. I go back to the shop and with a little more research discover that the John Deere 1025R tractor has the same engine as the LS and NewHolland so I drive 50 miles to John Deere dealer and he had a filter with a John Deere number of M806418. I buy this one and get back to the shop and it fits perfectly.

With the John Deere part number I cross that to a WIX and it comes back to the original filter that I tried two of the WIX 51365. Has anyone else run into this issue? The Yanmar engine is not new in this kind of service but this one model number certainly has a unique filter on it for some reason. I went back to my dealer and ordered two "factory" filters to have on the shelf which I'm fine with but just curious if anyone else came up with another brand filter that fit that Yanmar Engine.

Thanks for your comments and following this saga.

tomplum · Oct 9, 2018

Lisa I can't speak to your exact application. I can say that I run into that in my work more often than I should using the OEM filters for the equipment. You go to install a new filter and it turns a 1/4 turn or so and seems cross threaded. You know it's the right filter, threads appear fine. Back it out, wiggle it and on it goes. Sometimes it takes a few tries. Maybe that is all it is and is related more to the trueness of the threads of the new filter.

mslisaj · Oct 9, 2018

Tomplum I think you hit the nail on the head!! This morning after a lot of research and FINALLY calling Yanmar who sent me to one of their parts distributors that was way beyond nice in Salt Lake City. I was given the Yanmar filter number for this engine. Then this very nice Yanmar distributor goes through the trouble to cross it into a Napa number. Well with this information I continue my research and now I'm an expert on oil filters after reading spec's for a couple hours. Bottom line was the thread was a M20X1.5 on ALL the filters for this application INCLUDING of course the John Deere filter that I eventually installed on this tractor. So now I'm armed with a good story and a lot of information to say - and I truly questioned this myself - that I had TWO defective WIX filters. I'm in the automotive repair business and I take these filters back to my supplier who's totally understanding, although he's raised his eyebrow too about these defective filters but he's gladly refunding the money. In the mean time one of the other countermen go back to their bins and comes out with a packaged drain plug with M20X1.5 and threads this into each of my returned filters easily. I didn't want to see that and I admitted it to these guys but they said stuff happens in the manufacturing. So maybe the nipple that the filter threads on was a few thousandths of an inch too big? Or if I "backed it out, wiggled it" and threaded it back on it would of worked? Probably so, but the last thing I wanted to do to this brand new tractor with 50 hours on it was cross thread the filter or the nipple so I gave up too soon. Here's the kicker, I buy that M20X1.5 drain plug to see if it threads into my old filter and sure enough when I got back to the shop it fit perfectly with no hassle.

So now I know I can use many different brands of filter on this engine as I have all the numbers now and I probably won't run into this issue again but it sure made a long afternoon for me for just an oil and filter change.

Thanks again tomplum for taking your time to weigh in on this now solved issue.

Lisa

Walter L · Oct 9, 2018

Here is the LS part # for the filters for your tractor acording Farm Eq. 24-7
This Listing Includes the Following (6) Filters:
Oil Filter, PN: 40356015.
Pre-Fuel Filter, PN: 40350134.
Fuel Filter, PN: 40358122.
Air Filter, PN: 40049450.
Hydraulic Filter, PN: 40195621.
HST Filter, PN: 40220109.

mslisaj · Oct 9, 2018

Thanks Walter for the list.

papachaz · Oct 12, 2018

mslisaj said:
Tomplum I think you hit the nail on the head!! This morning after a lot of research and FINALLY calling Yanmar who sent me to one of their parts distributors that was way beyond nice in Salt Lake City. I was given the Yanmar filter number for this engine. Then this very nice Yanmar distributor goes through the trouble to cross it into a Napa number. Well with this information I continue my research and now I'm an expert on oil filters after reading spec's for a couple hours. Bottom line was the thread was a M20X1.5 on ALL the filters for this application INCLUDING of course the John Deere filter that I eventually installed on this tractor. So now I'm armed with a good story and a lot of information to say - and I truly questioned this myself - that I had TWO defective WIX filters. I'm in the automotive repair business and I take these filters back to my supplier who's totally understanding, although he's raised his eyebrow too about these defective filters but he's gladly refunding the money. In the mean time one of the other countermen go back to their bins and comes out with a packaged drain plug with M20X1.5 and threads this into each of my returned filters easily. I didn't want to see that and I admitted it to these guys but they said stuff happens in the manufacturing. So maybe the nipple that the filter threads on was a few thousandths of an inch too big? Or if I "backed it out, wiggled it" and threaded it back on it would of worked? Probably so, but the last thing I wanted to do to this brand new tractor with 50 hours on it was cross thread the filter or the nipple so I gave up too soon. Here's the kicker, I buy that M20X1.5 drain plug to see if it threads into my old filter and sure enough when I got back to the shop it fit perfectly with no hassle.

So now I know I can use many different brands of filter on this engine as I have all the numbers now and I probably won't run into this issue again but it sure made a long afternoon for me for just an oil and filter change.

Thanks again tomplum for taking your time to weigh in on this now solved issue.

Lisa

and sometimes, the parts place won't believe you. I got two bad sets of points one time trying to tune up a 62 chevy. I could put the old ones back in, and it would start right up, put in the new ones, nothing. I finally drove it to the parts store with the old ones in it, had the guy come out and watch me put the 3rd pair he'd exchanged for me, in it and it not start, then had him watch me put the old ones back in and start it. If memory serves me, we went to set number 5 to get ones that worked

mslisaj · Oct 13, 2018

With the points issue I think I would have got my ohm meter out and found out what was wrong with those points and maybe used a file to clean the contacts. That's old school ignition and I made a lot of money in that business. I'm sure you had a pair of funky points with something on the contacts that insulated them but before I went though all that you did I would have found the problem. But, that was years ago and systems were simpler then. :dance1:

papachaz · Oct 13, 2018

mslisaj said:
With the points issue I think I would have got my ohm meter out and found out what was wrong with those points and maybe used a file to clean the contacts. That's old school ignition and I made a lot of money in that business. I'm sure you had a pair of funky points with something on the contacts that insulated them but before I went though all that you did I would have found the problem. But, that was years ago and systems were simpler then. :dance1:

they were brand new out of the box, I wasn't gonna mess with them, I wanted new ones that worked right without me having to 'fix' them, LOL back then $3 to a high school boy meant a lot

I didn't want to do something trying to fix them that might not work and lose my ability to take them back