Lifespan of kubota tractor

[KennyG]

Nope, I measured the on my BX. 1 hour on the meter = 1 hour in real life no matter the RPM. I know on the older machines, it was like that, where it would vary with RPM. Some of the huge machines are like that -- actually some have dual or triple hour meters - idle meters, usage meters, and total hour meters. I know on some of the newer light and medium duty consumer pickup trucks, they are starting to come with idle meters and total hour meters.

It always seemed to me that my John Deere registered less hours than clock time when running at lower speeds. I was going to start a discussion expressing my opinion (this is the Internet, after all) but I decided to check it. Today I used my 2010 JD 2320 (Yanmar engine) to split wood with my 3 point splitter. It is PTO rated at 3000 rpm but I usually run it at 2200 to 2400 rpm with the splitter (with a bit of 1300 rpm idle time thrown in while I stack wood). I worked for an hour and 40 minutes and recorded about 1.1 hours on the machine.

I expected this since the JD has a mechanical tach drive and the hour meter is in the tach. However, I'm not sure why a machine with an electronic tach wouldn't also use revolutions to count hours.

I guess the only real information here is that if you are looking at two used tractors, hours may not be 100% equivalent.

 

[Agvg]

Today you should be able to calculate hours on more than RPM, liter pr hour would give more the real load on the tractor.

 

[Citydude]

Today you should be able to calculate hours on more than RPM, liter pr hour would give more the real load on the tractor.

We tracked fuel through the engine in the mining environment for engine replacement. Hours for preventive maintenance.

 

[Jstpssng]

It always seemed to me that my John Deere registered less hours than clock time when running at lower speeds. I was going to start a discussion expressing my opinion (this is the Internet, after all) but I decided to check it. Today I used my 2010 JD 2320 (Yanmar engine) to split wood with my 3 point splitter. It is PTO rated at 3000 rpm but I usually run it at 2200 to 2400 rpm with the splitter (with a bit of 1300 rpm idle time thrown in while I stack wood). I worked for an hour and 40 minutes and recorded about 1.1 hours on the machine.

I expected this since the JD has a mechanical tach drive and the hour meter is in the tach. However, I'm not sure why a machine with an electronic tach wouldn't also use revolutions to count hours.

I guess the only real information here is that if you are looking at two used tractors, hours may not be 100% equivalent.

I know that my last Kubota clock was based on RPM hours. As I very rarely operated at the recommended PTO speed, it took a lot longer than 60 minutes to show an hour. When using my logging winch it was mostly idling until time to pull a twitch in. I also kept it at a low speed when using my Caddigger backhoe, as that little thing was strong enough to easily pull itself apart.

 

[Atchuuu]

I know that my last Kubota clock was based on RPM hours. As I very rarely operated at the recommended PTO speed, it took a lot longer than 60 minutes to show an hour. When using my logging winch it was mostly idling until time to pull a twitch in. I also kept it at a low speed when using my Caddigger backhoe, as that little thing was strong enough to easily pull itself apart.

Is that true of all/most Kubota's?

 

[DK35vince]

Is that true of all/most Kubota's?

Its true of most any tractor with mechanical tach (cable driven tachometer)
Electric meters can go either way.

 

[Atchuuu]

Its true of most any tractor with mechanical tach (cable driven tachometer)
Electric meters can go either way.

Well, learn something new a couple of times a day. Never thought about it on the tractor but I was thinking that my truck doesn't have a lot of miles on it but it sure is getting a bunch of hours on the "idle" clock. Every time I use remote start to cool or heat the truck it adds up.

 

[RobertN]

Is this correct?

My old Kuboata B8200 worked that way.

My newer New Holland racks up the hours real time.

Interesting point diesel85. I believe the hour meters on equipment usually record the hours at rated rpm, so low rpm operation will result in less hours than actual operating hours. Hour meters are intended to record level of use on internal wear components like pistons on cylinders, shafts on bearings, etc. Other components on a vehicle may get a different use history.

 

[Ken45101]

I doubt we'll see the electronics & emissions last anywhere near the 50 years that a lot of the 8ns have. There are so many more makes & models these days finding parts for many 20 year old machines is almost impossible.

Uh oh! My B21 and B2710 are 20 years old.

I'm sure you are right about the electronics. Besides, the prices of the electronic modules may be prohibitive if you can even find them!

 

[repete]

Let me understand this a little better with the mechanical tachometer. If my tractor hour meter is based upon 2400 RPM, each "hour" is roughly every 150,000 revolutions of the crank shaft? Is this correct? Then my little 2550 with about 5600 hours has 806,400,000 revolutions on it.