YT235 down again!

[Mauser12]

At about 180 hrs. the tractor started running a regen cycle every four hours. I checked with a dealership and was told that was normal. As tractors get older, they get dirtier. At 190 hrs. it started flashing the two warning lights in the dash that indicate an operator safety issue. I couldn't find the issue and the code it was displaying was not in the dealer's repair manual. They called Yanmar and were told that it indicated a bad water separator. I am not sure how that can be a safety issue. The part was backordered. The dealer cleared the code and the lights were out. I was told to use it until the part came in. I ran it for about 20 minutes and it started a regen cycle and the dash lit back up. It started running a regen cycle about every 40 minutes and. . . the oil pan started filling with diesel. It is back at the dealership. I am not complaining about the dealership. I have talked to their mechanics and the service manager is working on the problem. I am looking for ideas that I might bounce off the dealership mechanics. At this point I think the code and the lights are meaningless and may indicate a computer problem. The engine is running fine and every diesel that I have been around with significant water in the fuel ran poorly if at all. They seem to have nothing to do with diesel getting to the pan. Emails from Yanmar to the dealership don't seem to grasp the issue. They focus strictly on the code on the dash.

 

[Mauser12]

Just an update. The water separator had to come from Japan. It arrived yesterday. The sales manager was out yesterday so I couldn't get an update on the oil issue. I am starting to get frustrated.

 

[duanew1]

I can understand. I will be watching for a resolution.

 

[radios1]

the Diesel must be getting in the oil from either the lift pump, or injection pump. it's not good at all to get Diesel in your oil.

 

[Mauser12]

Agreed. The dealership is checking those two places. As of now, they think the code lights going off has to do with a bad dash circuit. They cleared themselves yesterday and have not come back on as of now. The fuel gauge now seems stuck on full which could also be the dash. They are seriously trying to follow the problems, they just seem to be traveling just ahead of them.

 

[Mauser12]

The tractor has been gone over by the dealership tech and the Yanmar representative. The two issues, (a possessed dash and fluid in the engine oil) and a plan is in place. They are disassembling the dash to look for grounding issues, replacing the fuel gauge and sending unit, and putting new seals in the hydraulic pumps. I the dash problems still occur, they plan on installing a new dash. It has taken a little time but they have chased the problems.

 

[Mauser12]

I would call the dash fixed. The fluid in the oil pan seemed to be addressed also. However, as of this morning, the dipstick is showing about 1/2" above full. If the hydraulic pump seals were the issue the new ones only held for about 35 hours. I guess it is back to the dealership and waiting on the Yanmar regional rep to make some decisions.

 

[Mauser12]

I finally got the 235 back yesterday. It was gone a full month this time, three weeks the time before and three weeks before that. The dealer sent the oil in for analysis and the result was diesel in the crankcase oil. Yanmar okayed the seals on the injector pump. They never arrived. I don't know, maybe the boat from Japan sank. The dealer talked Yahnmar into supplying a new pump. The tractor was fixed in three days once they had the pump. This tractor has been sitting more in the last three months that it has ran. That is a direct result of slow or no parts from Yanmar. If Yanmar is going to do business in the US, they are going to have to supply parts from here, not half way around the globe.

 

[Industrial Toys]

Planes take off an land evry few seconds and much of it is freight. No reason stuff from pretty much anywhere can't get here quick. COST may be another matter!

I would be happy that I got a new pump instead of a repair job.

 

[Mauser12]

I am not unhappy with the repair or the dealership. However, it is ridiculous for it to take four weeks to get a part. The pump is not even a Yanmar product and the local NAPA store could have gotten it in three days. I will say it again, if they are going to sell tractors here they need to supply parts from here, not half way around the world. I purchased this thing to use and not as a yard orniment.

 

[Industrial Toys]

I think Yanmar is number one. Just curious, who is the pump made by.

I needed a Hydraforce cartridge for my Cushman Mower. They supply to Deere and Cat amoung many other manufacturers. Wait for part was around 25 weeks as I recall, all the time with the machine down. Say they can't find enough workers in the states.

 

[Mauser12]

Waiting for parts that long is not right, no matter the maker. This tractor is just over a year old. It has been in the show three times, each for extended periods. Each time, the part was availably locally but Yanmar refused to use that source. One of the parts was hanging on the wall at the local parts store or avilable in a couple of days. I understand that tractors break down but a year old tractor should not spend months in the shop waiting for parts. If this was a new pickup, all kinds of **** would have been made by whoever owned it. This will be my last Yanmar. If they won't support the tractor correctly, I won't support them

 

[radios1]

Waiting for parts that long is not right, no matter the maker. This tractor is just over a year old. It has been in the show three times, each for extended periods. Each time, the part was availably locally but Yanmar refused to use that source. One of the parts was hanging on the wall at the local parts store or avilable in a couple of days. I understand that tractors break down but a year old tractor should not spend months in the shop waiting for parts. If this was a new pickup, all kinds of **** would have been made by whoever owned it. This will be my last Yanmar. If they won't support the tractor correctly, I won't support them

I totally agree, they should only sell Yanmars in Countries where they can PROPERLY support Yanmars.!! Americans demand better service than other Countries do!!.

 

[Mauser12]

Here we go again. The 235 is headed back to the dealership for the fourth time. Same problem. . .fuel in the crankcase, (just over an inch this time). The Yanmar guess this time is the injectors. They have been ordered but Yanmar is insisting the they be replaced one at a time until the problem is resolved. How many weeks and trips taking the thing back is anyones guess. I would think by now Yanmar would just replace the three injectors and get rid of the problem. Of course, they are not the onces with the broken tractor and they do not care how many trips to the dealership it takes to do it their way. I am now reading the state's lemon law and have contacted Yanmar corporate in writing. I have never been so sorry that I purchased a product.

 

[normanb]

Here we go again. The 235 is headed back to the dealership for the fourth time. Same problem. . .fuel in the crankcase, (just over an inch this time). The Yanmar guess this time is the injectors. They have been ordered but Yanmar is insisting the they be replaced one at a time until the problem is resolved. How many weeks and trips taking the thing back is anyones guess. I would think by now Yanmar would just replace the three injectors and get rid of the problem. Of course, they are not the onces with the broken tractor and they do not care how many trips to the dealership it takes to do it their way. I am now reading the state's lemon law and have contacted Yanmar corporate in writing. I have never been so sorry that I purchased a product.

That sucks but also sounds like a dealer issue. I know the dealer I have would just install them all and claim they found it on the last one.

Chris

 

[Mauser12]

Definitely not a dealer issue. They are as frustrated as I am with the process. They wanted to replace all three, solve the problem and send me on my way. It is definitely Yanmar that is throwing the fly into the ointment. I would purchase from the dealer again but it would not be a Yanmar.

 

[radios1]

I can't think of any way an injector could possibly cause this, it sounds more like bull to me!!..

 

[Mauser12]

I have talked to three non-yanmar diesel mechanics and they all agree that it could be the injectors. In fact, they all said that is a common issue on some engines. Unfortunately, Yanmar wants to do one at a time to see which one it might be. This is after months of guessing at the problem and replacing parts that did nothing.

 

[radios1]

I have talked to three non-yanmar diesel mechanics and they all agree that it could be the injectors. In fact, they all said that is a common issue on some engines. Unfortunately, Yanmar wants to do one at a time to see which one it might be. This is after months of guessing at the problem and replacing parts that did nothing.

so how could the diesel get from the cylinder to the crankcase without huge amounts of excess smoke??..

 

[AaronM]

so how could the diesel get from the cylinder to the crankcase without huge amounts of excess smoke??..

I agree. On an engine that small I would think it would have to either be missing on one cylinder and/or smoking terribly. Both would be obvious to the operator. I have ran several diesel engines that DID get fuel in the oil through bad injectors and without much visible symptoms but those were engines that burned 150-200 gallons of fuel per day. A quart or so of unburned fuel per day on those engines didn't really add much to the visible exhaust smoke.

The only other way I can see it being an injector is if the fuel tank is positioned above the injector and fuel is somehow gravity feeding through the injector when it is parked.