Break in procedure - Many questions

[GirlWhoWantsTractor]

Read a bunch of threads on this and still a little confused. This is what the manual says:



What is "full load governed speed"?

If you're aiming for a particular engine speed ("100 RPM above full load governed speed") why do you want the speed control lever "Fully Advanced."

Is "speed control lever fully advanced" the same as WOT?

"Lugging" is working under load at low RPM, right? (always bad)

All of this break in would be in low range, right? Should one also do some traveling around in high range?

Everyone talks about PTO but I actually don't have any PTO-driven implements yet. Should I go ahead and run the PTO with no implement (and can you leave the protector on while it's running)?

Start up is in idle. Then slowly move the SCL until 1500 RPM, then allow to warm up for a few minutes, then slowly up to 2500 RPM and go, right? Is this the same after break in?

First hour is already history. Basically I warmed it up, etc., as above, then spent an hour box blading, not continuously, as this part required periodically lifting the blade and scooting over to another section. Does that sound okay?

Thanks, guys.

 

[RNeumann]

Their are a bazzilion theories about engine break in. The idea is to seat the rings and valves so you get good seal/compression. Some say idle is too low as it doesn’t provide good oil pressure and other say slowly increase engine speed over the first few hours. Varying engine speed is seen as a way to ensure things don’t wear in/seat in one way that may not seal with different speed and load.
IMO- modern machining and metals make this less critical. I don’t idle my machines when cold-1000-1200rpm instead. I’d be easy any varying for the first 5-10 hours. I wouldn’t just set one RPM and say run a PTO water pump. I also would go out with a 12’ disk and have to run the machine a full load. Easy and varying for the first few hours. After that use normal mechanical sympathy. Again, just MHO!!

 

[davrow]

I've never used my PTO either. Probably should just to see if it works... but don't think I will ever have any PTO implements, so...

 

[Reb954]

Just run it the way you normally would.

"Full load governed speed" means the throttle is on full so the governor is limiting how fast the engine will turn. There will be about 100 rpm difference between full load rpm's and no load rpm's.

"Is "speed control lever fully advanced" the same as WOT?" I don't know what "WOT" means but if the lever is fully advanced you will have maximum rpms.


""Lugging" is working under load at low RPM, right?" Yes and never lug an engine, especially a diesel engine.


"All of this break in would be in low range, right? Should one also do some traveling around in high range?" It doesn't matter what range your transmission is in, just vary the rpms and don't lug it.

You can run your PTO with no load if you like. If you do then any transmission debris loosened by running it will be drained out in your 50 hour oil change.


Your start up procedure is fine. It partly depends on outside temps. The colder it is the longer I give it to warm up. If it is warm outside I give it a minute or two to get the oil circulating good then put it to work.

 

[oosik]

My 2009 Kubota M6040 owners manual says about break in - -

For the first 50 hours

- do not operate the tractor at full speed

- do not lug the engine(during or after break in)

- do not put the engine under max load

- do not start quickly nor apply the brakes suddenly

- do not run the engine at speeds faster than necessary

- on rough roads or fields - - slow down

"Full load governed speed" - I would only be guessing - that's not an answer you need - call the dealer

Lugging is when the load placed on the tractor exceeds its ability to continue at the set rpm. The rpm will continue to decrease unless - the load is decreased, the speed control lever is increased, the clutch pedal is pushed. It is an undesirable condition under any situation.

There is no reason you can't operate the tractor in any gear or any range during break in as long as the engine is not lugged.

I run my PTO in the winter, with the rubber cover on, nothing connected - I think it helps warm up the massive gallons of hydraulic fluid.

I warm my tractor up at around 1300 to 1500 rpm and move on out at that rpm also. I see no need to run the rpm up to 2500 either during or after breakin to get the tractor moving.

I've always been told that during break in its best to vary the speed/rpm and not operate for long periods at the same speed or rpm.

I'm sure your first hour of operation was just fine.

 

[RNeumann]

Just run it the way you normally would.

"Full load governed speed" means the throttle is on full so the governor is limiting how fast the engine will turn. There will be about 100 rpm difference between full load rpm's and no load rpm's.

"Is "speed control lever fully advanced" the same as WOT?" I don't know what "WOT" means but if the lever is fully advanced you will have maximum rpms.


""Lugging" is working under load at low RPM, right?" Yes and never lug an engine, especially a diesel engine.


"All of this break in would be in low range, right? Should one also do some traveling around in high range?" It doesn't matter what range your transmission is in, just vary the rpms and don't lug it.

You can run your PTO with no load if you like. If you do then any transmission debris loosened by running it will be drained out in your 50 hour oil change.


Your start up procedure is fine. It partly depends on outside temps. The colder it is the longer I give it to warm up. If it is warm outside I give it a minute or two to get the oil circulating good then put it to work.

WOT=wide open throttle

 

[CobyRupert]

I've always been told that during break in its best to vary the speed/rpm and not operate for long periods at the same speed or rpm.

I'd go with this and not worry that much about the minutia.

btw: WOT = wide open throttle

 

[Reb954]

I learn something new everyday, probably won't remember it tomorrow though.

 

[RNeumann]

I learn something new everyday, probably won't remember it tomorrow though.

With all the “fly by wire” stuff I don’t even know if WOT means anything anymore. It’s probably “maximum flux capacitor” or something like that now.

 

[BlackOps]

use common sense - but use the tractor. that is why you bought.