BX24 Engine RPM

[RayCo]

I cannot remember the exact number that I read the other day as I was flipping through my owner's manual for my BX, but it was something like 3200 RPM to get the 540 RPM PTO speed. (Or maybe it was the 2500 mid-PTO, I forget.) I typically run my engine between 2400 and 2500 for driving and loader work, 2700 when I'm using the hoe. I wanted to sling some mud off the tires tonight before I put the tractor away, so I went out on my road in high gear and revved it up to 2900. The thing was screaming. I cannot imagine 3200 RPM. I mean, I know that this wouldn't be the recommended speed if it weren't okay, but it just seems like it would sound bad and dangerous, from an engine wear or damage perspective. Assure me that I'm just being paranoid.

Also, I never thought to wonder this before tonight, but how does a tach work on a diesel engine? Tachs I've put in cars wired up to the distributor.

 

[BotaBigot]

Per the WSM, it reads voltage in the alternator. The explanation was short, no details, and the translation to English left something to be desired...

 

[Taiser]

Heh heh, maybe a bit paranoid, my B7800 sounds like it's ready to explode when running full bore at PTO speed. You won't hurt it, but then again I never really have to run it that high. In low gear, using the FEL I run it at about 1500 and it does 99% of what I need it to do, the other 1% I just blip the throttle a little higher for a few minutes.

When using the BH, I usually just run it at about 2000 RPM. Make it just a tad slower but still has lots of power, is easier on my ears and also my "own" paranoid feelings! I have run it at full speed once in a while using the BH, but it's not really necessary unless you are doing major heavy work!

 

[David_Kb7uns]

Per the WSM, it reads voltage in the alternator. The explanation was short, no details, and the translation to English left something to be desired...

Probably not the voltage but the frequency of the AC in the alternator.

David Kb7uns