RPM's for using BX24 during break-in period?

[Mowbizz]

Got a little seat time today with the BX24 BH and FEL and was wondering what the ideal RPM's is for using these. I know the manual says run it about half throttle til it's broken in but am I hurting anything by actually digging and lifting at around 2400-2500 RPMs?? I didn't rev the engine to see how many RPMs full throttle is...
Any input would be appreciated...

 

[C6rider]

I've been using 2200-2400 and have 30 hours now it's almost 4 weeks old. No signs of any problems. Just let it warm up awhile before you rev it up.

 

[Mowbizz]

I've been using 2200-2400 and have 30 hours now it's almost 4 weeks old. No signs of any problems. Just let it warm up awhile before you rev it up.

OK thanks...I'm going to scan the manual one more time too...

 

[seapea]

When got my B2620, I asked my dealer if there was a break-in period that would restrict how I used it. He said no, and to "just use it like a tractor". However, the manual says that during the first 50 hours you should operate it at "a slower speed" and "avoid excessive work". I don't know what constitutes slower or excessive. I've pretty much kept it between 1500 and 2100 RPMs. I only have 11 hours on it so far and haven't used the PTO yet, but will this weekend with my new tiller. I'm not sure if I should rev it up to the 2800 RPMs required to get the PTO at 540 RPMs.

BTW, the manual says proper break-in is important for long life. I wouldn't necessary expect to see problems after 30 hours of improper break-in, but maybe after 1000 hours you'll find your tractor doesn't run as well as one that was broken in properly.

 

[mpowrd]

I also agree that you can pretty much use whatever power is needed for the job as long as the engine and the tranny/hydro oil are properly warmed up.

We've got 20+ hours on our new BX24 now and a lot of work I do at 2200-2400 rpm just because that's all I needed. In fact, as one member's suggestion, I did my initial backhoe work at these RPM levels because it slowed down the motion and allowed me to develop better control coordination without having the hoe go crazy.

On a couple of occasions, I had to run at 3000 rpm to get more power and speed with the loader and the engine handled it fine.

Just be sure to warm it up nice and easy, then go use it like you need to.

 

[Mowbizz]

I also agree that you can pretty much use whatever power is needed for the job as long as the engine and the tranny/hydro oil are properly warmed up.

We've got 20+ hours on our new BX24 now and a lot of work I do at 2200-2400 rpm just because that's all I needed. In fact, as one member's suggestion, I did my initial backhoe work at these RPM levels because it slowed down the motion and allowed me to develop better control coordination without having the hoe go crazy.

On a couple of occasions, I had to run at 3000 rpm to get more power and speed with the loader and the engine handled it fine.

Just be sure to warm it up nice and easy, then go use it like you need to.

Great...thanks for the answers and opinions. Does anyone know what the top RPM is for a BX24? I was guessing that 2200-2500 was about half throttle.

 

[Shmudda]

I am new to the BX24 family too and put its first 10 hrs on my machine last weekend digging stumps and doing some grading. I ran the engine while using the hoe around 2600 to 2750 RPM. I know what the manual stated and I believed that they expect you to run it around 2500 or so, but this engine is no different then any other engine out there! Who bought a new car or truck and didn't take it past 30 or 40 MPH for the first 2000 miles? I never did that....yea right! That's what 50 hrs usually equates to, about 2000 miles averaging 40 MPH.

I feel that Kubota is just being ultra conservative here because they have no idea how these machines are being used after the sale. Typical Japanese engineering company, as Honda is the same way, very conservative in their specs and break in period. Just take care of the machine and don't do anything really stupid with it, common sense goes really far for longevity!

As for the fastest RPM wide out, I believe it is just under 3200 as a buddy of mine has a BX23 and he runs his fill tilt, and that's where his is at.

Craig

 

[mpowrd]

If idle is around 1200 and full throttle is about 3200 rpms, then 2200 is about half way up the operating range. Probably more than half the rated HP and torque, though (I would guess).

 

[offcamber]

I asked my dealer this very question...the salesman and the tech said the same thing...don't worry about it just warm it up and run it at full throttle and it will be fine..For average work I run it 27-29 but when I really working it I push it all the way up...33-34

 

[curtisfarmer]

Wow, the BXs sure do rev high, the L48s max out around 2700 with pto 540rpm at around 2,300rpm. When I hear 32-3300, that is impressive for a diesel tractor. I would like to see the BX torque-HP curve to see where the optimal rpm range is.