2555 running cold

[holeycow]

I've seen a significant improvement in the engine temperature now that I have added the airflow limiters in front of both radiators... The engine warms up much faster but it don't seem to be over heating any. The real test is going to be when the temperature drops to single digits and below this winter.

is your cab heater making heat now?

 

[holeycow]

airflow limiters in front of both radiators...

both Rads??

one is an engine coolant heat exchanger. What is the other one?

Sorry, got it. I would be careful with the hydraulics cooler, especially if you tarp the engine bay.

I just put my piece of cardboard in with no ties or anything. It stays. My cardboard is not really adequate in very cold weather. I need to make tarps too. My tractor does make cab heat though...

 

[JerryK]

Some folks jut remove their fan when it real cold, just have to be smart about it... whatever works for you. I like to keep some airflow past the intercooler, so I just use a 12" hole cover for my Dodge Cummins. You have to work the motor to make heat.

 

[Glrret]

Holeycow.... yes, I did put a board in front of the hydraulic and engine coolent radiators but I put a 7 inch hole in the center of both boards. I plan to watch them very close to make sure I haven't created a situation that will result in hydraulic overheating.

The cab heater is now blowing warm air....not hot air but at least it's not like having the air conditioner on.

I'm still thinking of making some sort of engine side skirts that I can use this winter when the temperatures get down in the teens and below.

 

[IH782]

Holeycow.... yes, I did put a board in front of the hydraulic and engine coolent radiators but I put a 7 inch hole in the center of both boards. I plan to watch them very close to make sure I haven't created a situation that will result in hydraulic overheating.

The cab heater is now blowing warm air....not hot air but at least it's not like having the air conditioner on.

I'm still thinking of making some sort of engine side skirts that I can use this winter when the temperatures get down in the teens and below.

Glad you're getting somewhere

 

[Glrret]

Well I called my dealer two days ago and asked for information on the latest ECU software version but I haven't heard anything back yet. That is kinda typical for my dealership it takes 2 or 3 calls to get any information and then I wounder if the answer they give is accurate.

I may just have to make some kind of insulated side panel covering to help in keeping the engine temperature up.

 

[pmsmechanic]

If I need my JD 4410 to run warmer I just cut open a garbage bag and hang it over the front of the tractor so the the airflow is blocked off. It's easy to get the motor warm then. If I need more cooling then I just fold some of the bag under itself. Easy quick and cheap.

If you don't have an infrared thermometer then I've found that if you can hold your bare palm on a hydraulic line or radiator hose for a few seconds then temp is around 130 - 140 F. That's an ok temp for hydraulics but you want your engine to be at least 180 F.

 

[Glrret]

If you don't have an infrared thermometer then I've found that if you can hold your bare palm on a hydraulic line or radiator hose for a few seconds then temp is around 130 - 140 F. That's an ok temp for hydraulics but you want your engine to be at least 180 F.

I ran my 2555 this past weekend for 2 hours at PTO speed powering my wood chipper. When I got done I idled the engine down for about 2 or 3 minutes then turned it off. Right away I opened the hood, removed the side panel and put my hand on the radiator... it was cold, I could have left my hand there indefinably, all the hoses, for both the coolant and hydraulics were cold, not cold like over night cold, but not warm either.

 

[RangerStammy]

I did a little research on this since I'm going to be using my tractor for snow removal. It has a 155 deg thermostat in it from the factory. The tractor won't get much warmer than that unless it fails closed. Seems like a design flaw from the factory. Mahindra spent millions (billions?) of $$$$$ to develop the mCRD just to possibly overlook this one crucial part?

 

[JerryK]

My 2555HST service manual states that the thermostat is designed to open up at 72C, about 160F. It also states that overcooling can be caused by ' Excessive low atmospheric temperature ', and can be cured by ' Decrease radiator working area by radiator masking '. As a side note, you have to remember that the heater core in the roof of the cab is pretty large and acts as a secondary radiator [ or heat sink ]. Especially if the two blower motors are running, that's probably more air movement over the heater core than your average vehicle. I am not saying that is the cause, you just have to remember that thing is taking heat away from the motor, too. The heat that a motor makes is actually waste heat. And, though the thing usually runs better at a certain temp, the motor making too much heat is not good either. Again, not condoning the heat problem... Someday, I am going to have enough snow to get mine out and work it.

 

[Glrret]

I wounder if there is a higher temp thermostat available that I could install during my PRE-winter service and then swap it to the lower temp thermostat in the spring.

 

[JerryK]

I wounder if there is a higher temp thermostat available that I could install during my PRE-winter service and then swap it to the lower temp thermostat in the spring.

I would think that maybe a Stant would fit, thermostats are usually not that different. You have to wonder if there is a reason for that temp rating. Would not want to mess with it if it is emissions/mCRD system related. I would think that it probably is because most tractors manufactures have more folks yelling about running too hot, especially in a hot/dusty/chafty environment. I would stick with your radiator blocking scheme for now... Spring is right around the corner.. [ well, I can dream... ] [ you might be able to find a good looking cedar savage to share the cab with you to keep warm ]

 

[Glrret]

I understand not wanting to overheat the engine, but we need to at least get it up to normal operating temperature too....

 

[Btown]

I did a little research on this since I'm going to be using my tractor for snow removal. It has a 155 deg thermostat in it from the factory. The tractor won't get much warmer than that unless it fails closed. Seems like a design flaw from the factory. Mahindra spent millions (billions?) of $$$$$ to develop the mCRD just to possibly overlook this one crucial part?

155 deg F seems to be way to low for a diesel, but maybe it has to run this cold to keep the emissions down. Like one other person stated EricTheOracle put a higher temp thermostat in his Kioti and it solves the heat problem and extended his regen times. I am aware Mahindra uses a DOC and not a DPF.

 

[IH782]

155 deg F seems to be way to low for a diesel, but maybe it has to run this cold to keep the emissions down. Like one other person stated EricTheOracle put a higher temp thermostat in his Kioti and it solves the heat problem and extended his regen times. I am aware Mahindra uses a DOC and not a DPF.

The strange thing is higher temps produce lower emissions. With higher temps the engine is more efficient and cleaner burning.

 

[pmsmechanic]

If you are going to replace the thermostat for winter I would install a 195 degree one.

 

[Glrret]

okay where can I get a 195 degree thermostat for my 2555? My dealer is saying the only one available is the stock one in the part manual.

can someone provide a part number and source?

 

[RangerStammy]

okay where can I get a 195 degree thermostat for my 2555? My dealer is saying the only one available is the stock one in the part manual.

can someone provide a part number and source?

Like JerryK said, a generic Stant *should* work.

Based on a picture of the factory one (bills tractor, hopefully it's not just a stock photo) the following looks like an equivalent. I know it's 185, but the shape/style is very similar. I would recommend using a lower temp first and gradually increasing, or if several of us are going to do this, one of us start with a lower temp and check results before we all go potentially waste time/money.



Stant 14968 Thermostat - 185 Degrees Fahrenheit Amazon.com: Stant 14968 Thermostat - 185 Degrees Fahrenheit: Automotive

I'll gladly be a guinea pig in a month or 2 when it's finally cold here. But I'm sure I'll be able to see if I'd I'm getting heat right away (temps in the 40-50s)

 

[RangerStammy]

155 deg F seems to be way to low for a diesel, but maybe it has to run this cold to keep the emissions down. Like one other person stated EricTheOracle put a higher temp thermostat in his Kioti and it solves the heat problem and extended his regen times. I am aware Mahindra uses a DOC and not a DPF.

Did it extend his regen times, or the time between his regens? I haven't seen his videos about low or no cab heat, just his slipping out of gear ones.



I too worry that the reason the temp is set so low is an emissions related reason. However, we don't know since Mahindra corporate isn't the best communicator.

 

[pmsmechanic]

okay where can I get a 195 degree thermostat for my 2555? My dealer is saying the only one available is the stock one in the part manual.

can someone provide a part number and source?

I can't give you a direct answer but if you go to an automotive parts shop like NAPA and find a partsman that knows how to look up things then he/she should be able to come up with something. The critical measurement is the diameter of the disc. Then it's the question of whether it will fit into your thermostat housing. Your best bet will be to take your present thermostat out and take it along to see if something can be matched up.

The Mahindra part number is "006004365F91" for a thermostat for your tractor. The partsman should be able to use that to find one that fits for measuring. Another option would be to buy one from your dealer and take it to an automotive parts store for them to match up with. Once your done return take the Mahindra thermostat back to the dealer for your refund. Or save it to use when you change back to a cooler thermostat for the summer.

Hope this helps. When you find the part make sure you share the part number for others on the forum.