bx2200 - a rock stalled it

[wjmst]

While I was cutting the grass on Saturday, the mower on my bx2200 snagged a big rock out of the ground and got wedged half under the mower deck.

I heard some loud rock smashing and then the entire bx shut down. The whole thing lasted less than probably 3 seconds. It happend so fast I didn't even have time to react.

I removed the rock and restarted, everything seemed ok. The blade wasn't damaged beyond use, but it was dull and a little nicked up. The rock was about 10"x12" and about 2-3 inches thick.

I don't know why the bx stalled, but it sure did save some damage to my equipment!

Just wanted to share the story with everyone.

 

[VABlue]

It stalled because the mower blades stopped, which stopped the mid-pto shaft, which put a lot of pressure on the hydraulic pump to keep the shaft moving, which put a large amount of pressure on the engine to keep the hydraulic pump going. Basically, that rock loaded the snot out of the engine!

Glad it still runs smoothly and nothing more than the blades were dinged up.

 

[NY_Yankees_Fan]

You would think the belt on the MMM would have continued to turn, smoked real bad and broke before stalling the tractor???

 

[Av8r3400]

VABlue - I don't think the hydraulics have anything to do with it. I think the PTOs are mechanically connected to the engine's drive shaft. The PTOs aren't hydrostatic.

NY_Fan - Na. I stalled my BX a couple of times with the snowblower on the front (ice usually). The mower is on the same drive, so if it got jammed, you can stall it out.

It happens. If she's still running smooth, you're good to go.

 

[RobJ]

It stalled because it's a 22hp BX2200. Lots of times as mentioned stalling can be a good thing.

Run over some smaller rocks and you should be fine.

 

[DiezNutz]

VABlue - I don't think the hydraulics have anything to do with it. I think the PTOs are mechanically connected to the engine's drive shaft. The PTOs aren't hydrostatic.

You are correct, Sir. Thank Kubota for breeding this confusion with their "hydraulic independent PTO" on some models (of which the BX2200 is not one, as it were). All it really means is that the PTO clutch is completely internal the HST and hydraulically actuated via the valve assembly connected to that PTO lever in your eager little mitt.

 

[John R. Blair Jr.]

I stalled my bx2200 twice now on the same stump (gone now) and I'm afraid it did damage??? Only because I think the 60 inch MMM sounds different, is it jus me or could it be real? Does not seem as quite as before a little bit more rumble from the deck, in its 7th year on 4.5 acres and I pretty good with the scheduled maintenance!?!?!?
Thanks
John

 

[Harry c]

Check for bent blades and / or spindles. They can create vibrations and obviously, strange noises.

 

[Tom_H]

I stalled my bx2200 twice now on the same stump (gone now) and I'm afraid it did damage??? Only because I think the 60 inch MMM sounds different, is it jus me or could it be real? Does not seem as quite as before a little bit more rumble from the deck, in its 7th year on 4.5 acres and I pretty good with the scheduled maintenance!?!?!?
Thanks
John

It is possible that one of the blades is out of balance. Every spring I lift my MMM with a hoist, remove and sharpen the blades myself with a bench vice and an angle grinder. I just use a finish nail sticking out of the wall to center the blade and see whether the two sides allign horizontally to the ground. If one side drops lower, that side is heavier and would cause vibration from being out of balance at high rpm. I just grind off a tiny bit more until the blade balances.

There are, of course, other things that could be the source of the problem, but this one comes to mind for me. Good luck with this.

 

[simpilot]

Do I need an overrun clutch on my BX2230 to be safe when running a rotary cutter? Keith--I may have an SUDT tree on my place. Lon.