DK40SE Squeal When Moving in Reverse.

[coobie]

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Above are the pics of the parts involved in solving the squeal issue. The first pic shows what the tractor is equipped with from the factory. The second and third pics depict the replacement parts; a newly designed hydraulic hose which I believe takes the place of the "u" shaped metal pipe. (I say, "I believe," because I did not actually see whether the "u" shaped metal tube was reinstalled or not- I was called away at the moment things were being reassembled. I will take a look and post back if indeed the piece is still used as part of the update). The old style banjo bolt had a hex head cap screw head and the new design attaches the hydraulic hose's elbow swivel fitting directly to the top of the bolt's end. Note the hyd hose has a cap on it from the factory to protect it from contamination. The caps which were on each end are removed prior to installation. Installation took about 1/2 hour or less start to finish. There is no need to drain hydraulic fluid to do this update, but I was at 400 hour service interval so I changed both hydraulic filters and topped off the trans fluid.

Part numbers from the parts bags they came in, are as follows: New style eyebolt to replace existing~ part # T4125-39101.
Attenuator hose: part # T4125-39001
Cord band,(cable tie) part # T2185-82551

NOTE: I cannot say whether these part numbers apply to ALL tractors exhibiting the squeal noise because I'm not privy to that data- which is one again why I suggest ANYone with the squeal noise that needs diagnosis/repair; contact your selling dealer and discuss it with them FIRST.

CM out.

Thanks coyote machine for this research.My new 2012 DK40 HST had the same squeal in reverse.I contacted my dealer about a week ago for a fix based on this information.Michigan Iron & equipment came tonight and installed the kit and the squeal is GONE.Thank you for this great information.coobie

 

[Coyote machine]

Thanks coyote machine for this research.My new 2012 DK40 HST had the same squeal in reverse.I contacted my dealer about a week ago for a fix based on this information.Michigan Iron & equipment came tonight and installed the kit and the squeal is GONE.Thank you for this great information.coobie

You're welcome! Glad this fix is still doing it for those who end up with the reverse squeal. It's great when it goes away, isn't it?:thumbsup:

 

[k0ua]

kco, If you could take a moment to assist me on the installation procedure to install the Squeal in reverse kit for you DK35.

I assume you remove the upper banjo bolt on the side of the transmission, and replace it with the new open headed "banjo bolt" I assume with the O ring under the head of this bolt?.. how tight do you tighten this? I am a little confused by the O ring, not being in a recess? Then screw on the right angle hydraulic connector of the attenuator hose and route the end capped attenuator hose forward to near under the starter. Any input on the proper procedures would be helpful.

James K0UA

 

[coobie]

You're welcome! Glad this fix is still doing it for those who end up with the reverse squeal. It's great when it goes away, isn't it?:thumbsup:

Been in and out for the last week or so.Yes it is nice the squeal is gone now.Can,t thank you enough for the information you posted.Take care,coobie.

 

[Coyote machine]

Been in and out for the last week or so.Yes it is nice the squeal is gone now.Can,t thank you enough for the information you posted.Take care,coobie.

No problem, just glad to have been able to follow it through to a solution with Kioti. If I'd listened to my selling dealer and their c^%p about, 'all manufacturers have had this problem', I'd have been listening to the squeal until I dumped the tractor at a loss - no one wants to listen to that noise day in and day out....
Tractor on!

 

[kco]

kco, If you could take a moment to assist me on the installation procedure to install the Squeal in reverse kit for you DK35.

I assume you remove the upper banjo bolt on the side of the transmission, and replace it with the new open headed "banjo bolt" I assume with the O ring under the head of this bolt?.. how tight do you tighten this? I am a little confused by the O ring, not being in a recess? Then screw on the right angle hydraulic connector of the attenuator hose and route the end capped attenuator hose forward to near under the starter. Any input on the proper procedures would be helpful.

James K0UA

Yes, the banjo bolt is the one on the left side of the transmission case directly above the HST filter. The first photo in my May 09, 2012 post (#366 of this thread) shows the new banjo bolt in place before attaching the hydraulic hose. I can't recall the "O" ring arrangement but think it is as you described. I believe I simply replaced it to be the same as the one that came off with the original banjo bolt. I just tightened the bolts fairly snugly, but not overly so.

The second photo shows the new banjo bolt with the hose running to the front--over a wiring harness and operator platform support. It also shows the tape-covered blob of foam to protect the hose on the platform support bracket.

That positioned the hose end so it rests on the loader mount bracket and frame under the starter as shown in the third photo. It's all well protected and supported so I did not bother tying it down.

The fourth photo shows the completed installation looking directly up from the floor.

Before changing the banjo bolt I ran the left side wheels up on 6" x 8" blocks(one is visible in third photo) so the tractor would be tilted to the right before removing the banjo bolt. It gave more working clearance and lessened the chance of losing oil. However, losing oil is not likely a problem since the HST filter, which is lower, can be changed with no oil loss. But I'm not sure, because I always run it up on blocks when changing the HST filter.

Thanks to Coyote's instructions and photos it is an easy installation. If I can do it anyone can.

Cheers,

Ken

 

[k0ua]

Thanks Ken.

James K0UA

 

[paulfun9]

Just curious, Has no one reported the squeal noise since this last post dated 2013? I don't recall it being talked about lately but then my memory isn't what it used to be.

 

[Coyote machine]

The patch kit fixed it, and likely became a part mod of all tractors made after it.

 

[IXLR8]

My 2 year old DK40 with 76 hrs on it just started to having the reverse squeal. It is going to the dealer next week for some other HST issues and I hope to have them address the squeal issue as well.

 

[k0ua]

My 2 year old DK40 with 76 hrs on it just started to having the reverse squeal. It is going to the dealer next week for some other HST issues and I hope to have them address the squeal issue as well.

It is a pretty easy fix, the dealer put the kit on mine, no charge.

 

[kco]

Yes, due to the excellent work of Coyote Machine's, K0UA's and others' researching and documenting the solution in this thread it is an easy fix. You can easily do it yourself if you prefer to avoid the time and work of sending it to the dealer.

 

[Coyote machine]

My 2 year old DK40 with 76 hrs on it just started to having the reverse squeal. It is going to the dealer next week for some other HST issues and I hope to have them address the squeal issue as well.

Curious what HST issues you have in addition to the reverse squeal?

 

[IXLR8]

Curious what HST issues you have in addition to the reverse squeal?

When I take my foot off the forward pedal, tractor keeps driving for 3-10 seconds, temperature dependent, lower temps longer drive times. If I try to push on the reverse pedal while tractor is still driving forward... I can't push down on the pedal, or I can push down on the pedal but it seems to not have any effect until tractor stops driving forward. My dealers service manager says he has seen this before on a DK50. He was able to clean some control valve and fix the issue, apparently the entire HST unit needs to come out to get at this control valve. This time Kioti has agreed to just replace the entire HST unit.

 

[IslandTractor]

When I take my foot off the forward pedal, tractor keeps driving for 3-10 seconds, temperature dependent, lower temps longer drive times. If I try to push on the reverse pedal while tractor is still driving forward... I can't push down on the pedal, or I can push down on the pedal but it seems to not have any effect until tractor stops driving forward. My dealers service manager says he has seen this before on a DK50. He was able to clean some control valve and fix the issue, apparently the entire HST unit needs to come out to get at this control valve. This time Kioti has agreed to just replace the entire HST unit.

Bummer to hear of the problems you've had. I haven't seen any of these issues with my DK40se.

 

[paulfun9]

The patch kit fixed it, and likely became a part mod of all tractors made after it.

Well its not an official part of my machine as it came from the factory. I have not had any problems with noise from the machine yet but have taken the time to copy the part numbers down for just in case. Anyway thanks for all the time you guys invested in dealing with the problem and getting us a solution.

 

[DK35vince]

Well its not an official part of my machine as it came from the factory. I have not had any problems with noise from the machine yet but have taken the time to copy the part numbers down for just in case. Anyway thanks for all the time you guys invested in dealing with the problem and getting us a solution.

Could be wrong but I thought the reverse squeal was a HST only issue..

 

[Coyote machine]

Could be wrong but I thought the reverse squeal was a HST only issue..

Has someone shown it to be present on non HST machines?

 

[paulfun9]

Could be wrong but I thought the reverse squeal was a HST only issue..

My DK40SE is a HST not a gear. We have 2 HST tractors and 3 well 2 shuttle and one with what they call a torque converter.

 

[xplosivetech]

I had the reverse squeal issue with my DK40SE HST also and brought it to the attention of my dealer at the 50 hour service and to my knowledge from following this thread and looking on my tractor they installed the kit to fix my tractor and it worked great for about 50 hours. Then the squeal came back. Has this happened to anyone else? I plan to check with my dealer again tomorrow, but I thought that I would check with you all to see if anyone else had that to happen to them.

Thanks.