F215 hydraulic pump problems

[DarinRay]

Does this sound reasonable (not totally understanding the circuit in this case). When the 3pt is not being operated, there should be a open path from the pump back to the tank. When a loader is added, that path is diverted through the loaders controls, then through the 3pt controls, then back to tank. If there is a restriction in any of the controls (3pt or loader), that would make the pump work harder and you'd hear it. If you were operating the loader and the noise went away, that may be because you've opened up a slightly better path to tank, through the cylinder (in essence). The 3pt would even work better in that case since the loader controls were not blocking the path any longer. Can you check system pressure when controls are not being operated? If there is high pressure, then you have a restriction somewhere (probably loader controls).

P.S. Flow could actually go through 3pt first, then to outside devices, but the problem would still be the same.

I think you are on the right path with this. I need to get a pressure reading and see where things go bad. Thanks a bunch all for the input.

Darin

 

[nostep]

Is there an easy way to remove the hoses to the loader (bypass close to the pump)? That would seperate the problem for further thoughts.

 

[DarinRay]

I actually don't have a loader on mine. I am going to have to get in back in the garage and tear the thing apart.

Darin

 

[YanmarFever]

I think Buck is on the right track with the filter advice.

Heres what I would do first, and its cheap.

I would drain all the hyd fluid and check the bottom of the machine for sludge, yes SLUDGE. We have had a few tractors that had 3/4" of grey green sludge on the bottom, which caused the same symptoms you described on the hill.

Drain the system.
Check for sludge with a probe & flashlight.
Flush it out with diesel fuel.
Buy an OEM filter from Danny.
Put new fluid in, and cross your fingers

I have had a few tractors, that were really dirty inside, it takes a bit of work to get the sludge out,but the results are worth it.

Good luck.

 

[Gary Fowler]

With the exception of the noise, I have the same problem as Darin. The gray/green slime and some black jelly looking crap completely stopped up the screen twice. It starved the pump completely the first time, and I didnt realize that I had a screen also. When the tractor started to stop shifting, I knew the hydraulics had a problem. So I changed oil and filter and it still wouldnt work. I let it run for an hour or so thinking the pump just wasnt repriming after the oil change and it would not work. I found out on this forum about the screen and the location. Yanked it out, cleaned it and it worked for a day and stopped again, Cleaned again and it worked but jerky and slow. I drained the oil, replaced the filter and cleaned the screen, a third time but it had no blockage this last time, however the oil turned a greenish color within only a few hours of running. I think the slime must be clay particles from the rice fields of Japan and Oil doesnt seem to flush it out very well.
Sorry for such a long write, but I have read where others had the same problem and if anyone can tell me what the final fix was, please do.

 

[DarinRay]

Thanks again guys. I am going to have to deal with this soon but right now I'm working on my bulldozers instead. Poor girl has to sit outside in the snow and cold.

Darin

 

[lens12]

Napa does not have a cross for the OEM Yanmar filter. I had them call their filter people to see if there was one they would recommend. They said they did not have one meeting the Yanmar specs & would not recommend one. I have ordered filters from a source that said they had the filter, but they were not the OEM ones & I won't sell them to anyone. I've had customers use will fit filters & starve their hydraulic pump enough to wreck the pump. I have OEM filters that I order from Japan , but they are not cheap, but they are cheaper than buying a will fit filter & a new pump.

 

[DarinRay]

Napa does not have a cross for the OEM Yanmar filter. I had them call their filter people to see if there was one they would recommend. They said they did not have one meeting the Yanmar specs & would not recommend one. I have ordered filters from a source that said they had the filter, but they were not the OEM ones & I won't sell them to anyone. I've had customers use will fit filters & starve their hydraulic pump enough to wreck the pump. I have OEM filters that I order from Japan , but they are not cheap, but they are cheaper than buying a will fit filter & a new pump.

The first time i changed the filter and oil I bought the OEM filter from Hoye Tractor. When I received the filter I put it in service and then after a couple minutes it started acting up again so i thought i would change it again but took the OEM number off the filter and my Napa crossed it right over. ?????? Dang i sure wish I would have keep the darn number off the OEM filter.

What is your OEM filter number? Also how much? Talk to you again and thanks for the reply.

darin

 

[EFC]

The first time I changed it I used a NAPA cross over number but am not sure what it was. After this change the unit didn't make a noise and everything worked SMOOTH for about 15 mins. Then the sound came back and jerky motion. So then I order it from Hoye Tractor and this is where we sit now with their filter. I used the Napa equivalent in the green and yellow 5 gal. The right oil was listed on this Napa oil. Keep in mind that this happened in the Spring, Summer, Fall, and now Winter. I don't hardly use this tractor and that's why it's happen through out the year.

I am wondering if when the suction strainer in the tranny area clogged up maybe this starved the pump for too long and did internal damage. Oh wait it was good right after a change of filter. Oh man it's a circle.

Darin

I will try this question one more time....

When you replaced the spin on filter which model and # did you use? What is the temp in your area? Which oil did you use in the trans?

Buck

 

[DarinRay]

I will try this question one more time....

When you replaced the spin on filter which model and # did you use? What is the temp in your area? Which oil did you use in the trans?

Buck

Hello Buck,

I thought I actually answered these questions already. Oops..

spin on filter was ordered from Hoye Tractor OEM I think and don't know what one it was.

The temp has been hot and cold because this problem has been happening since last Spring so it's been 0 degrees up to 90 degrees. Same problem

Used Napa yellow and green universal trans and hyd fluid 5 gal that is oil equivalent to the JD303 oil.

Thanks for your help.

Darin