Question for the owners of the v2 ... when your machine goes to do a ' burn ' for the dpf , is your machine set to do it in an auto mode or a manual mode , as in does it beep at you and ask you to stop and press a button to do it yourself ? Having problems now .. 850hrs in ... the machine has stopped on me 3 times in the last few weeks for no real reason , the last time it stopped when i was in the middle of the road . This has now become a safety issue and it seems Takhave no idea what has caused it . We have had their computor on it , the fault has not thrown up any codes . Looking for idea's ... Cheers
is there any way to disable the dpf?
no unfortunatly
what engine does that have in it?
kubota 115hp
the DPF kubotas (IT4) ive seen do a passive regen every 28-30 hours of run time. some have a momentary switch to override the passive regen, the next time the ECU senses the "correct" set of parameters, it will go into another passive regen. if too many passive regens are overridden, or the regen doesnt complete the cycle, HP and torque are derated, and will continue to further derate until you wont have any throttle response. the kubota ECU software we have has a vital's monitor screen that shows the level of DPF plugging. does this engine also have DEF injection?
since the fault has occured we have been docomenting times for everything there isnt a set time for the dpf to do a burn , at the moment it seems to get to around 45-48% before it does a burn and then comes down to anything from 20-32% the machine is set from factory on a auto burn cycle , it has not been overidden at an time i have never had the machine derate , it just simply stops , it has now become a safety issue as all the work i do is asphalt profiling / sweeping , the last time is stopped was in the middle of the road . by def injection , are you asking about the ad-blue injection , if so , yes
seems kinda strange that the machine would just come to a stop. all the engine related stuff ive seen simply derates the engine or puts it into "limp mode" it will still operate, but only at low idle. this sounds more like something on the machine, and not engine related. i'm no takeuchi expert. these are just my observations from dealing with kubota and other brands of IT4 and full T4 diesels in the 25-100 HP range.
there seems to be a few people over your way that are having the same problems a problem is that the kubota engine does not talk to takeuchi properly it has to be something to do with the dpf , just not sure another machine over here was set from the factory to ask to do a full manual burn , not auto
well i hope your dealer gets some answers for you.
thats the problem ... they are saying that no-one else is having a problem and they are not sure what is causing it
I know it doesn't solve your problem but an old RC 100 must be looking good mate. :-(
not at the moment ... lol ... need to sort this out cheers
Looks like you have got a battle on your hands. Best of luck, I know your pain all to well.
machine stopped again on me ... this time in the middle of the road seems it goes into the auto burn cycle and then the dpf senses that it is to hot staraight away and shuts the machine down not good but we drowned the dpf with water and had it going again in about 5 min i have never overridden a burn , it does it itself in auto mode and it doesn't derate , it just turns off and wont turn back on
Almost sounds like you may have a exhaust temp sensor that's not reading the correct temp. I assume you are at operating temps, and everything else is working normally. The only time I've seen anything like this happen was right after startup, on a subzero day after the machine has been sitting for 3 days. The combination of cold oil, stiff tracks and the engine went into a passive raven as soon as the exhaust got to temp. It shut down and wouldn't restart. By the time I got there a couple hours had passed, everything cooled down and it restarted. I'm not familiar with your machine, just trying to help.
thanks for your help i'm just grasping at straws at the moment as takeuchi dont know either
how often does this happen? like after hours of running? or soon after startup?
i have 900 hours on maching now only started in the last month or so has happened 4 times now no set time for it to happen we have been tracking it now for the last 3-4 weeks with hours / what percentage of material is trapped in the dpf / what engine / hydraluic temps all i know now is that when it happens get alot of water onto the dpf to cool it down and then it will start again within 5 min like yesterday i think they are going to fit new sensors into the dpf part of the machine within the next week or so , see if that is the issue it has got to to the point that it has become a safety issue and the machine is ' not fit for purpose '
the kubotas ive seen that have shutdown due to high exhaust temps, could possibly be a safety issue due to the extremely high exhaust temps generated by a regen... something else popped in my mind, what are you doing when it happens, are you running a hiflow attachment or?
i have been running a high-flow attachment ... asphalt profiler , but my engine / hydraulic temps are not getting that hot we are looking at getting some new sensors for the dpf this week and see if that changes anything
good luck, i hope your dealer gets this sorted out for you
To me, issues like this are the biggest strike against all the aftertreatment nonsense. Not the increased fuel burn, or the urea, or having to bake out the can every xx,000 hours. But problems with shutdown where the computer does not tell you what its problem is, and the dealer can not figure it out. Why all the sectrets?
yea it sucks. even at the dealer level trying to get info is like pulling teeth sometimes. we've run into problems that the troubleshooters dont have an answer for. they rely heavily on the engine OEM engineers, and typically they aint talking. it's taken well over a year for our OEM troubleshooters to be able to "decipher" the readings we capture, and have gotten much better about offering a solution just looking at the data stream we sent them. the hardest part for the dealer is being able to replicate the problem while they are monitoring the ECU. or us, most of the time we cant just throw parts at the newer engine and DEF systems, warranty wont pay for it unless we can provide a definitive cause
I've either talked to or heard of many guys having this or similar problems with the Tier IV equipment, makes me glad I own older stuff, to be honest. I remember when "smog equipment" started happening in the 1970s, added on charcoal canisters, air pumps, etc. which did little good, robbed performance and added unneeded complexity to engines. I might be wrong about this, but the add-ons now remind me of that time, and I won't consider newer year model equipment until we have a quantum mutation in combustion and emissions control, eliminating all the hardware. To me, the only thing more frustrating that something that flat doesn't work, it something that only *kinda* works. I ran OshKosh S-series concrete mixers for many years, and on several occasions the Cummins emissions controls would take a dump and derate engines, occasionally shutting them down all together. I cannot begin to describe the horror that goes with having 10 yards of concrete on board, sometime with chemical accellerants added in winter, and hearing that engine die and that drum stop rolling. Simply because of an emissions signal that wasn't making sense to the ECU. The last time I had it happen, the truck was down for 3 weeks, we lost a $1300 load of concrete, and the repair bill was over $7500. I could turn probably 8 loads a day in that rig, at roughly $1000/load. Do the math on that fracas.
the dealer swapped out the dpf last week the old one was 4.2kgs heavier then the new even though it had only just done a burn what we did notice was a white stain down the exhaust from the ad-blue , maybe over-spraying or something we have now swapped out the ad-blue injector to see if that makes a difference modern tec sucks
is there anyway possible to just remove the dpf system?
no-one has worked out how to do it successfully on the tak's yet see if the swap out of the dpf filter and the new ad-blue injector make any difference
wow! clearly the filter got sooted up. This engine is used in several different machines, Taki, CAT, and Kubota that I know of. I am curious if they all are having these issues or just Taki? I would think that the engine and its regen/DEF system would be identical regardless of what machine it is in. I don't see Kubota allowing the engine to be messed with by the individual OEM, but maybe they can alter some aspects of the engine. I have had a 272D on demo for a while and one of the issues that I have is that the Kubota engine has SCR and a DPF. I don't get the redundancy in that. The CASE SV340 and all of their SCR machines don't have a DPF filter at all. They apparently are able to meet emissions with just DEF fluid. It is surprising that Kubota cant pull that off.
once again the v2 has stopped ... it was in auto burn , had just started to do the burn when i jumped out of the machine to swap attachments and then the machine stopped we had an air blower on it to try to cool the dpf down for 35 mins with no success so we ended up having to put alot odf water over it to get it going spoke to the dealer , he said to run it in manual burn mode , tried that , the machine noitifed me that it required a burn , stopped the machine as per procedure , activated the burn , at the time the dpf was 48% full , turn on the burn , it jumped to 125% full then dropped back to 48% and slowly done the burn , the burn dropped to 24% , it took 14min to complete just so over this machine for the few small issuses that Takeuchi dont know how to fix
So since you posted this I came across a bunch of youtube videos on DPF cleaning. It seems the git-r-dun rednecks these days are blasting them in reverse with a power washer (carefully). Something I remember someone saying they did on a Ford way back when they first came out. Of course all the nay sayers say it will wreck the entire machine but the guys that are doing it say it works just fine and some manufacturers are switching to a wet process now too (Detroit diesel) As for me, I don't think it will necessarily hurt if done carefully because the DPF gets wet enough anyway with condensing exhaust on a cold day. YMMV, don't tell anyone you did it, etc. etc.
I believe an outfit in the states is comming up with a new ECU program that does away with the emissions crap. A bloke is taking his ASV RT 120 there next week. It will come back as a 145 hp machine so be patient Rockman, if it works and they get a program for the Tac your troubles may be over.
all ready looking at that .. just have to get my ecu number to see if i can get it sorted
i have a tl82r when i start it it runs for 30 seconds then the it dies the oil pressure lite comes on what is the problem it does not show a code .
now i have a code of 3843 when is a exhaust temp sensor code i know they are'nt related
It might be shutting down due to low oil pressure or low coolant level