Backhoe L3200 and backhoe capacity/power and operating temperature

[petroliapete]

I have about 15 hours on my new machine (much with the backhoe). Absolutely love it!!! But, if I use the backhoe continously for a while (45 minutes +), the cylinders get very hot - so hot that I can't touch them. I noticed after an extended period that I had to be careful because the grease started to get soft. Is that normal?

Also, in other machines I looked at, I could use the boom to lift the back of the tractor off of the ground slightly (in the event I was stuck and needed to reposition the tires). I neglected to check the Kubota before I bought it. But it doesn't seem to come even close to being able to do this. Is that normal??

I suppose I am little paranoid because when it was delivered to the dealer, their was an issue with the actuator for the boom. It was stuck in the up position slightly and fluid would cycle through it continously (much the same way as if a relief valve were stuck open). The delar fixed it, but I am wondering if they missed something, or there is another problem that was not obvioous at the time, or ???

I used to run an really old Case 530, which granted is a much heavier machine, but the cylinders never even came close to changing temp, even when I ran it hard. I could also lift the back of the machine onto a trailer with the boom (when I was showing off )

Two biggest enemies of hydraulics are dirt and heat. And I seem to have alot of heat, so I am concerned.

Any opinions or advice is greatly appreciated..

Thank you very much.

 

[Carl_NH]

Welcome to TBN Pete. I was born in PA - Kane and still have some land up that way - nice country.

Is the the 4690BH? What is the BH connection 4 Point i presume with a subframe? Does the 3200 have hydro cooling in front of the radiator? Are your tires loaded?

My B21 has 8 gallons of hdyro fluid, a hyd cooler, and two pumps and is about the same digging capability I think to your L3200 BH and I have ran it pretty hard and while the lines and cylinders get warm never too hot to touch - maybe 105-110 max - warm but not hot. I can lift and move the tractor around with the BH.

Something doesnt sound right - I would ask the dealer to check the pressures and maybe if the oil is bypassing somehow its heating up.

Carl

 

[LD1]

It is not uncommon for hydraulics to get 140-150 which will see too hot to touch, but still not harm anything. But since I dont have a set-up like yours, I dont know what is normal and what is not. I am just speaking to hydraulics in general.

Any chance you got a temp gun and can get an actual temp of the cylinders when they are hot???

And not having the power to lift the rear does seem to be a problem though.

 

[TractorTrooper]

My brand new (4 hrs) L3200 cylinders also get very hot after use. It's probably normal since I haven't had any other issues with the tractor so far.

 

[JoeBuyer]

Sounds like maybe you have fluid leaking past the boom cylinder piston? What is the speed of that cylinder? Does the does the dipper or bucket cylinder get as hot given approx the same use?

 

[petroliapete]

Thanks Carl!!
Been to Kane a number times!! (still remember a cold snowy high school footbal game there when I was a kid ). Tires not loaded. I thik I am goign to approach the dealer . thanks!

 

[petroliapete]

Thanks. I love mine. I hopeyour right.

 

[petroliapete]

Thank LD1. I thought about a temp gun. Don't have access to one anymore. based on my experience I may in the temp range you are talking about. It is hot enough that I feel it immeditaley and can't hold my skin to it at all. a little singed armhair. Maybe I can find a temp gun?? Thanks for your help.

 

[petroliapete]

Joe
I wondered about fluid leak like you suggeested. The boom and dipper cylinders definitely get hot at same time. It seems that cylinder speed is alittel sllower that I wold expect, but I am not very experienced with this unit so I may be wrong and it may be normal.
I will check with dealer and post their repsonse so we all know

 

[LD1]

Yep, time to consult your dealer with your concerns. They should look at it under warranty. DONT FORGET to post back and let us know what they find. All too often new members post a problem, get it fixed, and never report back. It helps ALL of us to help future members:thumbsup: