Workmaster 33 in "Safe Mode"

[Eagle1]

He also mentioned that if it was his and he was going to keep it he'd delete the dpf system.

Right after warranty expires......

 

[K5lwq]

I've got the same tractor with the same problem. Took it to the dealer two days ago and it wouldn't even go into a forced regen. They said it is most likely the injectors for the burner. They get fuel from a return line after the injectors for the engine. If the little fuel filter on the left side of the motor starts clogging it may still run fine but won't supply the emissions injectors causing them to fail. He also said to check the air pump because if it stops the injectors overheat and fail. The two injectors in the burner are $2800.

I was texting with your Dad on this I believe. I misunderstood when he said the injectors needed to be replaced. So they think the emissions injectors have failed? They should be able to test them and I would also think they are rebuildable.

I suggest starting a new thread with as much information you can provide about the symptoms. There are a lot of knowledgeable folks on this thread.

 

[kfd420]

I was texting with your Dad on this I believe. I misunderstood when he said the injectors needed to be replaced. So they think the emissions injectors have failed? They should be able to test them and I would also think they are rebuildable.

I suggest starting a new thread with as much information you can provide about the symptoms. There are a lot of knowledgeable folks on this thread.

It's doing exactly the same thing mentioned in the first post on this thread. The service tech said they could test the injectors and glow plug but it would be about $300 labor to get it taken apart. I'll tear into it myself and see what I can find out. My labor doesn't usually cost me as much.

 

[K5lwq]

It's doing exactly the same thing mentioned in the first post on this thread. The service tech said they could test the injectors and glow plug but it would be about $300 labor to get it taken apart. I'll tear into it myself and see what I can find out. My labor doesn't usually cost me as much.

Ok, well if you need any help I will do what I can. Have your dad give you my number if you need anything. Good luck.

 

[CloverKnollFarms]

I dont think you can simply delete DPF on an ECM controlled motor. That is the downside of not having mechanical injection

 

[edward09603]

Ditto on the exact same issues with my 2016 NH workmaster 33. Won't go above 1800 RPM. It acts like it goes through the burn cycle but no smell and no change. Took filter out and cleaned it. Looked like another ceramic filter at the back of the housing. Couldn't figure out how to remove that one for cleaning. Removed what I could soaked in bucket and degreaser. Got a bunch of black sludge to run out when cleaned with water pressure.
No change. Thinking of buying the Chinese code reader but want to see if anyone has used it with success.
Was quoted by local dealer to clean filter for $1300. Robbery level costs.

 

[kfd420]

Ditto on the exact same issues with my 2016 NH workmaster 33. Won't go above 1800 RPM. It acts like it goes through the burn cycle but no smell and no change. Took filter out and cleaned it. Looked like another ceramic filter at the back of the housing. Couldn't figure out how to remove that one for cleaning. Removed what I could soaked in bucket and degreaser. Got a bunch of black sludge to run out when cleaned with water pressure.
No change. Thinking of buying the Chinese code reader but want to see if anyone has used it with success.
Was quoted by local dealer to clean filter for $1300. Robbery level costs.

I gave up on the code reader/computer software after messaging a couple that have this tractor listed as compatible but they said it will not communicate with the Shibaura engine. If you find one that does work I'm sure several would be interested.

 

[MIbowhunter]

He also mentioned that if it was his and he was going to keep it he'd delete the dpf system.

Yep.. i was headed that way i believe. I had 183 hrs on mine. To clean the dpf- $1000, if it was an injector-$2500, if dpf replaced-$6000. I’ve ran diesel trucks for 15 yrs and deleted them though this is different, i researched with diesel mechanics IF it could be done (delete) and I dont believe it can because there is no tune that im aware of that would allow your ecm to operate. But overall.. deleting would be the fix. From all i’ve read and spoke with tractor mechanics, they dont get hot enough to regen well. Especially in the winter. At least the workmaster didnt. The bobcat tractors use a doc which works a little different. That sucks hope you get it figured out. I sold mine and bought a tc35… no issues.

 

[MIbowhunter]

Ditto on the exact same issues with my 2016 NH workmaster 33. Won't go above 1800 RPM. It acts like it goes through the burn cycle but no smell and no change. Took filter out and cleaned it. Looked like another ceramic filter at the back of the housing. Couldn't figure out how to remove that one for cleaning. Removed what I could soaked in bucket and degreaser. Got a bunch of black sludge to run out when cleaned with water pressure.
No change. Thinking of buying the Chinese code reader but want to see if anyone has used it with success.
Was quoted by local dealer to clean filter for $1300. Robbery level costs.

Im not sure if the wm has has it, but some have a little plug in the exhaust pipe after it comes off the engine, you remove the plug and let the engine crank and it cleans alot of soot out. The branson tractors have it i think but not sure on the wm.. worth checking. Maybe someone with more expertise can advise.

 

[Struggler]

Our WorkMaster 33 went further than safe mode. It would only run 30 seconds and shut off. Using the method of starting the engine and immediately pushing the inhibit regen toggle for 2 seconds and then pushing the toggle to force regen until both regen indicator lights illuminated, it would run about 20 minutes. My neighbor works for a large construction company. His shop mechanic says, while tractor is still operating normally, gut the DPF with a wood paddle bit and reinstall. Then no more regen and no more problem.

 

[Struggler]

When our WM 33 was pretty new, I measured the voltages on the connector of the difference (delta) circuit board. Starting from the left, the first pin in unused. The second pin is ground, 3rd is +5VDC, 4th is 2.5VDC, 5th is 0.525VDC (right after regen), and 6th is 2.475VDC (right after regen). After operating for a few hours and before next regen, 5th wire is 0.535VDC, and 6th is 2.465VDC. I just purchased a NH WorkMaster 33/37 Service Manual in pdf for $20.00. By the way, the above measurements were performed with engine running. With engine off, but key turned to on, 5th wire was 0.500VDC, and 6th was 2.5VDC. These last 2 wires are shown connected to the ECU in the service manual.

 

[Struggler]

Our WM 33 is still under emissions warranty (7 years). The dealer replaced the entire burner and the tractor ran well; however, regenned every 2 hours, until last week when only one regen indicator came on, the second (up to temp) indicator never came on. I checked several sensors and so far don’t know what is messed up. Maybe the burner or maybe the ECU. After next repair either gut the DPF or sell and get a different tractor. LS manufactured this WM 33. The typical cloned Chinese service tech tool software does not work on the WM 33, so they say. I read online that the Perkins tech tool and software does work.

 

[thclimer]

Our WM 33 is still under emissions warranty (7 years). The dealer replaced the entire burner and the tractor ran well; however, regenned every 2 hours, until last week when only one regen indicator came on, the second (up to temp) indicator never came on. I checked several sensors and so far don’t know what is messed up. Maybe the burner or maybe the ECU. After next repair either gut the DPF or sell and get a different tractor. LS manufactured this WM 33. The typical cloned Chinese service tech tool software does not work on the WM 33, so they say. I read online that the Perkins tech tool and software does work.

I hope you or your dealer can figure it out.

All this emission stuff can sure reek havoc when it doesn't function properly, such a shame.

 

[Jrasband]

You can easily remove the system from tractor if you want to there are threads talking about how to do it. The workmaster 33 is the same tractor as my LS 3032

 

[Struggler]

I hope you or your dealer can figure it out.

All this emission stuff can sure reek havoc when it doesn't function properly, such a shame.

Thanks! I dislike the EPA very much. I have dealt with bad emission systems on diesel trucks and now a tractor. I reckon most of us have. The chem trails are likely worse than emissions from diesel exhausts.

 

[Struggler]

You can easily remove the system from tractor if you want to there are threads talking about how to do it. The workmaster 33 is the same tractor as my LS 3032

These extremely hot regens and running high RPMs shortens the life of an engine. Burns extra fuel, as well. The EGR system dirties the engine oil and makes it more abrasive. A terrible way to treat a good engine.

 

[edward09603]

Well I am going to bite the bullet and take my tractor into New Holland dealer to see what they can do. My neighbor takes them a lot of business and said they are going to treat me right and work as cheap as they can.

 

[Struggler]

Well I am going to bite the bullet and take my tractor into New Holland dealer to see what they can do. My neighbor takes them a lot of business and said they are going to treat me right and work as cheap as they can.

I hope they treat you fairly! Mine is going to the local dealership when they have an opening. We have a small dealership and their shop stays very busy. Once our WM 33 is repaired we are going to sell or trade. First choice for next tractor is a Yanmar and second is a Mahindra.

 

[Ky1200]

Our WorkMaster 33 went further than safe mode. It would only run 30 seconds and shut off. Using the method of starting the engine and immediately pushing the inhibit regen toggle for 2 seconds and then pushing the toggle to force regen until both regen indicator lights illuminated, it would run about 20 minutes. My neighbor works for a large construction company. His shop mechanic says, while tractor is still operating normally, gut the DPF with a wood paddle bit and reinstall. Then no more regen and no more problem.

Okay, I like the idea of punching a hole through the DPF, if it was the right size the pressure differential switch would not know the difference?????? What size hole are or would be recommended? I've got a Boomer 37 that the regen light comes one right away when started, then in about a minute the heater/regen light come on and will not go off... I've run it two hrs at 2200 and it hasn't chantged..... i will for sure try the paddle bit...

 

[Eagle1]

From what I understand start with a couple at 3/8" or less you can always go bigger. I have NOT done this yet.....