GeorgeSB
New member
I just changed the Kioti DK35 Hydraulic oil filter. My tractor is approximate 2003 vintage.
The hydraulic oil filter would not come off.
The hydraulic oil filter wouldn't come loose.
It's a very large filter both in length and in diameter (approx 4.25 inches) or over 100 mm. Very few wrenches used for cars and trucks are that large. Nothing I had would work without damage. I had a chain on a vice grip and that's all that would fit but I could feel it bending the filter when I used it at the end of the filter.
I read and watched everything I could find on line forums and on YouTube
I went to local Autozone, nothing. They suggested a waist belt leather and wrap it on your hand.
I went to another auto parts store, O'Reilly. I showed them the size of the filter. They had two options. A metal strap and a rubber strap. The metal strap had a handle that bent on a hinge for tight places, I made use of that feature.
About two hours before I had soaked the filter's inner most edge where it touches the seal, with PB Blaster, three times. My new favorite for loosening things up.
I ended up using both new filter wrenches.
The rubber strap wasn't strong enough.
So I used the metal strap with integrated handle and a hinge option on the handle. I followed many's advice to put the pressure down at the screw in end and not the outer end. The metal strap was slipping too much. So I inserted as much of the smaller rubber strap between the metal strap and the filter. This worked. But not until I took all the time I needed to get it into a position where I was strongest. There's really only one spot to access that filter and have any power in your hands and arms, from underneath. I was able to pull down. Humans are strong that way, pulling.
Once I finally, finally had a very secure grip in this one and only position. The filter moved a minuscule amount almost imperceptible. It was such a small movement, it nearly had me fooled thinking I hadn't move it at all. But I was pretty certain the filter wrench setup didn't slip and I saw the tiniest movement.
That's what we want apparently and all we'll get the first few times. So I kept repeating the process, setting the strapping up for maximum leverage. It began to move, clearly.
Once it made about a half turn it had let go of the seal or face and I could take it off by hand. The filter is huge so a large amount of hydro oil came out. I had an oil catch tub below.
I filled the replacement filter and wet the entire interface with oil. I knew a lot would leak but I think it was helpful. The inners of the new filter seemed to be absorbing the fresh oil. I had plenty of new oil so I wasn't worried about wasting some.
Once I had the new filter in position and carefully starting the screws. I tightened it up by hand and wiped it down. Then I went back and tightened by hand with much effort. A good amount of oil did leak out of the new filter but I was fine with that and think I did the right thing.
I started up the tractor and measured the oil level.
Once everything was running for a bit I operated the bucket. The bucket ran smoothly, like new. Apparently the old filter was blocking flow and the bucket movement had a rough and jerky feeling. Now all is great. I went back under looking for any leaks and saw a drop. I wiped it all down again and hand tightened a bit more with strength.
I doubt any filter could have been tighter. It was the factory filter put on then painted 14 years ago! I bought this machine used and don't have a dealership and I was working way too much. So the error of the first owner plus me. Now I have time to make things right. I'm hopeful there was no damage.
I'm doing as much service on everything as I possibly can. It makes me very happy.
If you have any questions, please ask.
The hydraulic oil filter would not come off.
The hydraulic oil filter wouldn't come loose.
It's a very large filter both in length and in diameter (approx 4.25 inches) or over 100 mm. Very few wrenches used for cars and trucks are that large. Nothing I had would work without damage. I had a chain on a vice grip and that's all that would fit but I could feel it bending the filter when I used it at the end of the filter.
I read and watched everything I could find on line forums and on YouTube
I went to local Autozone, nothing. They suggested a waist belt leather and wrap it on your hand.
I went to another auto parts store, O'Reilly. I showed them the size of the filter. They had two options. A metal strap and a rubber strap. The metal strap had a handle that bent on a hinge for tight places, I made use of that feature.
About two hours before I had soaked the filter's inner most edge where it touches the seal, with PB Blaster, three times. My new favorite for loosening things up.
I ended up using both new filter wrenches.
The rubber strap wasn't strong enough.
So I used the metal strap with integrated handle and a hinge option on the handle. I followed many's advice to put the pressure down at the screw in end and not the outer end. The metal strap was slipping too much. So I inserted as much of the smaller rubber strap between the metal strap and the filter. This worked. But not until I took all the time I needed to get it into a position where I was strongest. There's really only one spot to access that filter and have any power in your hands and arms, from underneath. I was able to pull down. Humans are strong that way, pulling.
Once I finally, finally had a very secure grip in this one and only position. The filter moved a minuscule amount almost imperceptible. It was such a small movement, it nearly had me fooled thinking I hadn't move it at all. But I was pretty certain the filter wrench setup didn't slip and I saw the tiniest movement.
That's what we want apparently and all we'll get the first few times. So I kept repeating the process, setting the strapping up for maximum leverage. It began to move, clearly.
Once it made about a half turn it had let go of the seal or face and I could take it off by hand. The filter is huge so a large amount of hydro oil came out. I had an oil catch tub below.
I filled the replacement filter and wet the entire interface with oil. I knew a lot would leak but I think it was helpful. The inners of the new filter seemed to be absorbing the fresh oil. I had plenty of new oil so I wasn't worried about wasting some.
Once I had the new filter in position and carefully starting the screws. I tightened it up by hand and wiped it down. Then I went back and tightened by hand with much effort. A good amount of oil did leak out of the new filter but I was fine with that and think I did the right thing.
I started up the tractor and measured the oil level.
Once everything was running for a bit I operated the bucket. The bucket ran smoothly, like new. Apparently the old filter was blocking flow and the bucket movement had a rough and jerky feeling. Now all is great. I went back under looking for any leaks and saw a drop. I wiped it all down again and hand tightened a bit more with strength.
I doubt any filter could have been tighter. It was the factory filter put on then painted 14 years ago! I bought this machine used and don't have a dealership and I was working way too much. So the error of the first owner plus me. Now I have time to make things right. I'm hopeful there was no damage.
I'm doing as much service on everything as I possibly can. It makes me very happy.
If you have any questions, please ask.
I really think it is the paint. You won't have any problem next time.. 14 years huh?.. Yeah I could see how that filter might be a bit clogged up. 
