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TAKEUCHI TL12V2 owners .... dpf questions ?

rockman

Well-Known Member
Joined
Oct 10, 2009
Messages
158
Location
Australia
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
 

crewchief888

Senior Member
Joined
Feb 1, 2012
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1,781
Location
NWI
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?

:eek:
 

rockman

Well-Known Member
Joined
Oct 10, 2009
Messages
158
Location
Australia
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?

:eek:
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
 

crewchief888

Senior Member
Joined
Feb 1, 2012
Messages
1,781
Location
NWI
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.

:eek:
 

rockman

Well-Known Member
Joined
Oct 10, 2009
Messages
158
Location
Australia
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.

:eek:
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
 

Tones

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Joined
Mar 15, 2009
Messages
3,062
Location
Ubique
Occupation
Ex land clearing contractor, part-time retired
I know it doesn't solve your problem but an old RC 100 must be looking good mate. :-(
 

Tones

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Messages
3,062
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Ubique
Occupation
Ex land clearing contractor, part-time retired
Looks like you have got a battle on your hands. Best of luck, I know your pain all to well.
 

rockman

Well-Known Member
Joined
Oct 10, 2009
Messages
158
Location
Australia
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?

:eek:
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
 

crewchief888

Senior Member
Joined
Feb 1, 2012
Messages
1,781
Location
NWI
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.
:eek:
I'm not familiar with your machine, just trying to help.
 

rockman

Well-Known Member
Joined
Oct 10, 2009
Messages
158
Location
Australia
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.
:eek:
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
 

rockman

Well-Known Member
Joined
Oct 10, 2009
Messages
158
Location
Australia
how often does this happen? like after hours of running? or soon after startup?


:eek:
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 '
 

crewchief888

Senior Member
Joined
Feb 1, 2012
Messages
1,781
Location
NWI
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?

:eek:
 
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