DK40SE Squeal When Moving in Reverse.

[duanekeys]

Do you have the mystery banjo bolt in the top of your HST filter? I hope this inspires you to check and not just blindly trust other will. At the very least ask. Don't be afraid to ask questions and make sure you understand the answers. Most people who understand are glad to give you an explanation. The ones who don't usually get angry and take your inquire as a challenge to there ability.

Tom

Awesome work!!!

Pulling out the solution into a separate "sticky" thread might be a good idea.

 

[Coyote machine]

Awesome work!!!

Pulling out the solution into a separate "sticky" thread might be a good idea.

Hey, I was thinking the same thing! About a separate thread which would cut to the solution- but you can have the 'cred' 'cause you posted it first

 

[dourobob]

. . . but you can have the 'cred' 'cause you posted it first

I think Tom get all the "cred" here :laughing: and certainly the gratitude of many.

I sent a link to this thread to my dealer this morning and he told me he is forwarding it to his KIOTI Canada rep.

Gotta love the internet when stuff like this happens!

Bob

 

[tnewbern]

Well 2 more hours of hard work and not a peep. I still need to get a part to finalize the before and after and when its all done I plan to make a complete report. I will be glad to put a thread with the details and also plan to send a copy to Kioti. I won't do this though until I know for sure and hopefully I will get the parts next week.

I don't need any credit but thanks for the mention. I would love to here from any other's to see what they have for pressure readings and bolts. This would help firm up my findings. If you do take a look at your bolts please post pictures.

I want to make one last comment here. I don't want my findings to be an attack on Kioti. They have great engineers and mechanics just look at your machine. This stuff happens and most of the time it has nothing to do with engineering. That was the point of the little skit I put together. I think Kioti found the same thing as they have a soft line kit that replaces the banjo fittings and hard line. I just don't buy that the problem was noise coupling and that is what I am hopefully going to prove.

Well back to the woods for some more work (alright fun!!!).

Tom

 

[Coyote machine]

Well 2 more hours of hard work and not a peep. I still need to get a part to finalize the before and after and when its all done I plan to make a complete report. I will be glad to put a thread with the details and also plan to send a copy to Kioti. I won't do this though until I know for sure and hopefully I will get the parts next week.

I don't need any credit but thanks for the mention. I would love to here from any other's to see what they have for pressure readings and bolts. This would help firm up my findings. If you do take a look at your bolts please post pictures.

I want to make one last comment here. I don't want my findings to be an attack on Kioti. They have great engineers and mechanics just look at your machine. This stuff happens and most of the time it has nothing to do with engineering. That was the point of the little skit I put together. I think Kioti found the same thing as they have a soft line kit that replaces the banjo fittings and hard line. I just don't buy that the problem was noise coupling and that is what I am hopefully going to prove.

Well back to the woods for some more work (alright fun!!!).

Tom

PLEASE post the correct bolt part number so I can order one from my dealer! Thanks!
CM

 

[grsthegreat]

im trying to locate that bolt in my service manual , but so far no luck. I dont have any squeal in my machine, however i did just buy a set of pressure guages and i will check my pressures after they arrive. Id like to see what presures im working at right now.

 

[tnewbern]

I don't know what the correct part number is. I have not received the parts I need to finalize the fix ( not expected until late next week. I ordered both the ECO specified bolt (incase its different than mine) and the bottom bolt which is what I plan to install. You will not find this in your service manuals. You will find schematics, diagrams and some details of how it functions but no parts details. You need the parts manual for that.

From what I understand Kioti has a bypass kit that replaces the banjo bolts and hard line. This is their solution to the problem and what I believe kattywumpus has on his tractor. This is a dealer install only item so you need to bring your tractor in for service. Even after discussing and providing the details that I shared with y'all I was assured I am not qualified to install the parts. This must be done by an authorized Kioti service technician. I don't have the details of the kit but I am working on getting them. kattywumpus can you post any details or pictures???

I currently have my own version of a bypass installed with fittings made up from my local hydraulic shop. Once I have the new bolts and a parts manual I will post what works for me. This may not be what Kioti recommends so please check with your dealers.


I am happy to report after many hours of hard work with the tractor I have not heard a single squeal. I am noticing some very faint chirping and whirring though. The chirps occur while accelerating or traveling uphill mostly going forward. Reverse is scary quiet. I don't recall hearing this before but its hard to say cause I don't recall listening for it. I can also here the gears whirring now and I don't recall that before. Maybe it was masked by other noises because it seems much quieter all around in the cab. This may just be paranoia or over sensitivity after the 7 Month ordeal with the squeal. The sounds are not loud at all actually they are quieter than the power steering and loader circuits. I just hope this is normal and not a sign of damage from the 100 hours of restriction, low flow and cavitation.

Tom

 

[Mike476]

Amazing thread !! Patience, ingenuity and determination, awesome trio !!

 

[Coyote machine]

I don't know what the correct part number is. I have not received the parts I need to finalize the fix ( not expected until late next week. I ordered both the ECO specified bolt (incase its different than mine) and the bottom bolt which is what I plan to install. You will not find this in your service manuals. You will find schematics, diagrams and some details of how it functions but no parts details. You need the parts manual for that.

From what I understand Kioti has a bypass kit that replaces the banjo bolts and hard line. This is their solution to the problem and what I believe kattywumpus has on his tractor. This is a dealer install only item so you need to bring your tractor in for service. Even after discussing and providing the details that I shared with y'all I was assured I am not qualified to install the parts. This must be done by an authorized Kioti service technician. I don't have the details of the kit but I am working on getting them. kattywumpus can you post any details or pictures???

I currently have my own version of a bypass installed with fittings made up from my local hydraulic shop. Once I have the new bolts and a parts manual I will post what works for me. This may not be what Kioti recommends so please check with your dealers.


I am happy to report after many hours of hard work with the tractor I have not heard a single squeal. I am noticing some very faint chirping and whirring though. The chirps occur while accelerating or traveling uphill mostly going forward. Reverse is scary quiet. I don't recall hearing this before but its hard to say cause I don't recall listening for it. I can also here the gears whirring now and I don't recall that before. Maybe it was masked by other noises because it seems much quieter all around in the cab. This may just be paranoia or over sensitivity after the 7 Month ordeal with the squeal. The sounds are not loud at all actually they are quieter than the power steering and loader circuits. I just hope this is normal and not a sign of damage from the 100 hours of restriction, low flow and cavitation.

Tom

I'm confused as to what parts are needed to fix your tractor. Didn't you already fabricate what you needed?
Can't you give those of us who don't have parts manual access a description of what to get from our dealers?
I want to try out your solution- can you describe exactly what you did to get a longer bolt with tapered shoulder to replace the short bolt that was on your tractor previous to making the bolt discovery?

Thanks,

CM

 

[tnewbern]

Hang in there Coyote Machine.

If you can't wait then here are some details of the fittings. The banjo bolts are M18x1.5 thread. I used M18x1.5 to #10 JIC with #10 JIC fittings on a hose. The hose is rather long though as I use it for testing and did not custom fit it to application. Make some measurements. Remove the banjo bolts and hard line (see attache photo). Head to you local hydraulic shop and get some parts. If you do this please post pics of your bolts and hard line.

I don't plan to keep this setup and will reinstall the hardline with the new banjo bolt. If the pressures are correct and no squeal then I will publish that part number. To piece together a bypass kit will cost you over $100. The bolt is $10 and a simple swap with minimal oil spill.