Industrial Tires on YM2002d?

[CoyPatton]

This is the only drain plug I located under my 2002D for the transmission. Strange my memory told me there was more than one.



Location of the suction filter cover. This is on the clutch side of the tractor. If you want a new filter on hand, they are available through hoye and fredricks.



This is the suction tube going into the transmission reservoir. You can trace it to the spin on filter housing and then from it to the pump if you have not located the pump yet.

Good luck on finding and repairing your leak.

 

[CoyPatton]

heres a video of the leak.
YouTube

I went back and rewatched your video of the leak several times. Having watched it several times in a row, I do not think your issue is is at the pump/front of your engine. While both your pressure and suction lines run in that area, I think you have a hole in one of those 2 lines near the filter housing. Most likely culprit is one of the rubber hoses on the suction line, although it could be any number of things in that area.
Start by removing that off white side cover so you can see. I would closely examine the rubber hoses. As these appear to be molded hoses, if they are not available from hoye or fredricks, you may have to get creative with replumbing with straight pieces of hose.
Next closely examine the metal lines to see if they are rubbing anywhere. And may have a pin hole. Then check the filter housing and filter itself for damage.
One big caution, injected (in this case I believe transmission fluid (but any oil/gas/diesel based fluid)) petroleum product through your skin could be deadly.



This is from Hoyetractor.com. While the diagram focuses on the molded hose going toward the pump, it appears the same hose is used toward the reservoir. Personally, if I found a hole/split in one, I would replace both! Also I noticed while looking under mine (see photos in earlier comment) there is about a 3” piece of hose between the suction adapter mounted on the transmission and the metal suction tube going to the filter housing. My guess is that on both our machines, these pieces of hose are original and pushing hard on 40 years old.

 

[wildbitshomestead]

i unhooked the fan, then started it up for a few seconds, just long enough for it to start leaking, while recording with camera on tripod. I zoomed in and slowed the video down, and it seemed to be the bottom of the hydraulic pump. So i removed the bottom flange and it looks like the O ring is split where it was spraying out.
So, off to the auto parts store I go to get a new o ring tomorrow, and stock up on hydraulic fluid. I checked the dipstick on the floor between legs, and it also seems bone dry. (which im confused about... if thats the transmission, why would that be where the hydraulic fluid goes? Where does the transmission fluid go if so... ) I just bought this tractor from a tractor mechanic of over 30 years, and he rebuilds these old yanmars, so I'm assuming/and hoping, most all is well, and that its just an easy fix.

I went back and rewatched your video of the leak several times. Having watched it several times in a row, I do not think your issue is is at the pump/front of your engine. While both your pressure and suction lines run in that area, I think you have a hole in one of those 2 lines near the filter housing. Most likely culprit is one of the rubber hoses on the suction line, although it could be any number of things in that area.
Start by removing that off white side cover so you can see. I would closely examine the rubber hoses. As these appear to be molded hoses, if they are not available from hoye or fredricks, you may have to get creative with replumbing with straight pieces of hose.
Next closely examine the metal lines to see if they are rubbing anywhere. And may have a pin hole. Then check the filter housing and filter itself for damage.
One big caution, injected (in this case I believe transmission fluid (but any oil/gas/diesel based fluid)) petroleum product through your skin could be deadly.

View attachment 660305

This is from Hoyetractor.com. While the diagram focuses on the molded hose going toward the pump, it appears the same hose is used toward the reservoir. Personally, if I found a hole/split in one, I would replace both! Also I noticed while looking under mine (see photos in earlier comment) there is about a 3 piece of hose between the suction adapter mounted on the transmission and the metal suction tube going to the filter housing. My guess is that on both our machines, these pieces of hose are original and pushing hard on 40 years old.

 

[rScotty]

...... if thats the transmission, why would that be where the hydraulic fluid goes? Where does the transmission fluid go if so... ) I just bought this tractor from a tractor mechanic of over 30 years, and he rebuilds these old yanmars, so I'm assuming/and hoping, most all is well, and that its just an easy fix.

As weird as it seems, every tractor I can think of uses a common sump for their transmission and hydraulic oil. It's the same oil and lives in the same housing....i.e. the transmission housing.
That's why you usually see it sold and labeled as: Trans/hydraulic fluid. Yep, it's the same oil and it all lives in the same house. Up top, the gears whirl around in that oil, while at the bottom the hydraulic pump sucks some out to run things hydraulic. The hydraulic lines route the return flow back into the transmission. Sometimes it goes through an oil cooler on the way home.

Hydraulic components use the same oil as the transmission does, but hydraulic pumps like their oil to be super clean & well-filtered. That's why there is a filter - and sometimes two filters - in the suction line that comes from the transmission sump and goes up to feed the hydraulic pump.

When trans/hydraulic oil looks foamy and milky rather than clear, that means it has water in it. If the shift lever boot is damaged or missing then water enters past the floor shift lever. Especially when the tractor is left outside in the rain. Then a cold night comes along, the water freezes, and things like oil seals and O rings are pushed to the breaking point. Probably the best thing you can do for an outside tractor is to tie a tarp over it.
rScotty

 

[wildbitshomestead]

Thanks rscotty, some good advice and wisdom there, much appreciated. This is my first tractor and first Diesel engine, so I知 learning as I go. It can be frustrating when things stop working and I知 scratching my head, but it痴 a lot of fun when I can figure it out with some help from forums like this and fix my tractor and get back to work.

As weird as it seems, every tractor I can think of uses a common sump for their transmission and hydraulic oil. It's the same oil and lives in the same housing....i.e. the transmission housing.
That's why you usually see it sold and labeled as: Trans/hydraulic fluid. Yep, it's the same oil and it all lives in the same house. Up top, the gears whirl around in that oil, while at the bottom the hydraulic pump sucks some out to run things hydraulic. The hydraulic lines route the return flow back into the transmission. Sometimes it goes through an oil cooler on the way home.

Hydraulic components use the same oil as the transmission does, but hydraulic pumps like their oil to be super clean & well-filtered. That's why there is a filter - and sometimes two filters - in the suction line that comes from the transmission sump and goes up to feed the hydraulic pump.

When trans/hydraulic oil looks foamy and milky rather than clear, that means it has water in it. If the shift lever boot is damaged or missing then water enters past the floor shift lever. Especially when the tractor is left outside in the rain. Then a cold night comes along, the water freezes, and things like oil seals and O rings are pushed to the breaking point. Probably the best thing you can do for an outside tractor is to tie a tarp over it.
rScotty

 

[CoyPatton]

As weird as it seems, every tractor I can think of uses a common sump for their transmission and hydraulic oil. It's the same oil and lives in the same housing....i.e. the transmission housing.
That's why you usually see it sold and labeled as: Trans/hydraulic fluid. Yep, it's the same oil and it all lives in the same house. Up top, the gears whirl around in that oil, while at the bottom the hydraulic pump sucks some out to run things hydraulic. The hydraulic lines route the return flow back into the transmission. Sometimes it goes through an oil cooler on the way home.

Hydraulic components use the same oil as the transmission does, but hydraulic pumps like their oil to be super clean & well-filtered. That's why there is a filter - and sometimes two filters - in the suction line that comes from the transmission sump and goes up to feed the hydraulic pump.

When trans/hydraulic oil looks foamy and milky rather than clear, that means it has water in it. If the shift lever boot is damaged or missing then water enters past the floor shift lever. Especially when the tractor is left outside in the rain. Then a cold night comes along, the water freezes, and things like oil seals and O rings are pushed to the breaking point. Probably the best thing you can do for an outside tractor is to tie a tarp over it.
rScotty

well explained!

 

[CoyPatton]

RScotty provided a great explanation on the common transmission/ hydraulic reservoir.
One lesson for all of us is to encourage new to tractor owners weather it be Yanmars or other brands to ask questions. I for one forget that things such as that common reservoir may not be something others are not aware of, unless you express your lack of understanding!
In others words, unless you ask about what you do not understand, many of us will (wrongly) assume some knowledge.

Personally, since our base tractors are the same model, ask whatever you wish of me. I may not know the answer, but be glad to share whatever I can.
My tractor has a Koyker 110 loader (on it when I bought it).
As I had stated in a previous post, MI y opinion is someone put Automatic Transmission Fluid (ATF) in your. reservoir. The currently called for fluid would be the JD Hy-Gard fluid or comparable fluid (J20c). Again your transmission, differential and all hydraulic systems (loader, 3PH rear remotes if added) run off of this common source reservoir. I had also indicated that the manual states this reservoir holds 16qts. However, yours will hold more as there is the addition of the loader. Each line holds a bit and the cylinders also hold some. The loader cylinders hold fluid regardless of their position. The rods in the cylinders fully extended will hold a bit more fluid than when fully retracted as the rod takes up some space. All in all a 5 gal bucket of hydraulic fluid will most likely be more than enough even if by some while means you are able to get all the fluid out of the lines and cylinders. You hydraulic system should be self bleeding of air, but try to not rum your pump without and oil supply. You could experience a condition know as captivation which could damage your pump. Try to prime the pump and suction line at the pump end. Otherwise the system should self bleed air.