Attachment too large

[VroomVroom]

I’ve used a Lucknow 6’ single stage snowblower on the rear of my mahindra 2816 hst. 22 pto hp. I’m pretty slow with it, never really bogged engine much. But curious, will this cause pto clutch premature failure. Anyone have pto clutch failure from longer term abuse with to large of an attachment or even heavy abuse with a proper size attachment? Is this snowblower too large for this machine. I never really overloaded it through much snow.

 

[CausticUrbanCoast]

You have a light shearpin or overrunning-slip clutch on it?

6' is pretty big if you get wet snow-fine if you get dry snow. Would probably use straight drift cutters on it rather than flared.

Personally not ever heard of anyone damaging a pto with a snowblower, usually the snowblower self destructs first. Is the snowblower belt or chain drive?

 

[RjCorazza]

I've never seen a single stage Luck Now snow blower, are you referring to a single auger 2 stage blower?
Regardless, I think you will know if you're overloading your machine too frequently. As long as the engine is not constantly bogging down or stalling I wouldn't think it would cause any concern for the tractor.

 

[VroomVroom]

One auger yes. I never replaced the snowblower shear bolt with anything lighter. Whatever the 6 foot single auger blower called for. It’s chain drive

 

[VroomVroom]

No slip clutch. Just the shear pin in drive shaft and think there’s one on the auger if I remember right. I only asked as a guy I know works at kubota said it was too large and can wear the clutch in the pto.

 

[CausticUrbanCoast]

No slip clutch. Just the shear pin in drive shaft and think there’s one on the auger if I remember right. I only asked as a guy I know works at kubota said it was too large and can wear the clutch in the pto.

Yeah it will definitely wear the clutch since the clutch will be trying to stop the mass of the snowblower.

 

[VroomVroom]

It has a sprag clutch in it. Or internal overrunning clutch. What wears exactly?

 

[K5lwq]

My biggest concern would be engaging and disengaging the clutch. That is the most wear on any type clutch. If you always do that at idle or just above with no load, I think it will be fine. Once it is locked up it should kill the engine before the clutch slips.

 

[VroomVroom]

I’d admit. In the past I’d sometimes push clutch in at pto speed. Now I throttle down an wait until the blower slows down before pushing in the clutch.

 

[VroomVroom]

The thing about a hst is , once you push in clutch, shift into a gear, and engage clutch, it remains engaged, even if you sit there not moving. The clutch is spinning a pump with the swash plate in neutral until you push the peddle. As for the driven clutch that is

 

[K5lwq]

HST or gear does not change the way a clutch works. Only what the clutch works. Once that clutch locks up, you can load that tractor as much as the engine can deliver and not hurt the clutch.

Now if you have to run higher RPMs or slip the clutch to get the blower going without stalling the engine, then yes you will damage the clutch.

 

[CausticUrbanCoast]

It has a sprag clutch in it. Or internal overrunning clutch. What wears exactly?

Ah nm then, your manual seems to be incorrect on the type you have.

 

[VroomVroom]

HST or gear does not change the way a clutch works. Only what the clutch works. Once that clutch locks up, you can load that tractor as much as the engine can deliver and not hurt the clutch.

Now if you have to run higher RPMs or slip the clutch to get the blower going without stalling the engine, then yes you will damage the clutch.

Yes. I meant the pto clutch. When stopping pto with the momentum of blower rotating it was mentioned you should idle down before pushing in the clutch so the blower don’t want to keep rotating so fast, over running the sprag clutch. Though it still must do it somewhat because when it has nothing attached on it the pto will stop pretty quick but with a slow rotating blower on it will rotate a little longer.
Honestly I don’t know.

 

[VroomVroom]

Ah nm then, your manual seems to be incorrect on the type you have.

What do you mean? I could be wrong on that.

 

[K5lwq]

Yes. I meant the pto clutch. When stopping pto with the momentum of blower rotating it was mentioned you should idle down before pushing in the clutch so the blower don’t want to keep rotating so fast, over running the sprag clutch. Though it still must do it somewhat because when it has nothing attached on it the pto will stop pretty quick but with a slow rotating blower on it will rotate a little longer.
Honestly I don’t know.

If that is your only concern then you could add a overrun clutch to your PTO. Then your PTO on the tractor can stop but the blower can keep winding down. However, I would still always idle down before clutching the tractor.

Overrunning Clutch-PTO Overrun Clutch

An overrun coupler attaches to a tractor's PTO shaft and drive shaft of the implement. It has a 1-3/8

www.agrisupply.com

 

[VroomVroom]

If that is your only concern then you could add a overrun clutch to your PTO. Then your PTO on the tractor can stop but the blower can keep winding down. However, I would still always idle down before clutching the tractor.

Overrunning Clutch-PTO Overrun Clutch

An overrun coupler attaches to a tractor's PTO shaft and drive shaft of the implement. It has a 1-3/8

www.agrisupply.com

Well it has a sprag clutch internally which is essentially the same thing. I’m not sure if over running it a lot by not reducing pto rpm first causes faster premature wear or not. Also, kind of curious if lack of use on the same clutch can cause failure either. Like to know more about it really. Now I do clutch in the pto at low idle snd once rotating I increase rpm. Decrease pto rpm before pushing in clutch. It was just mentioned that the over sized attachment will make the clutch slip and cause premature wear.

 

[K5lwq]

Yes, I understand you have a one in the tractor. However, if you use something like the one I posted for the blower it will protect the one in your tractor.

 

[nyone]

With 22hp what is the machine really rated for a 5ft blower? Are you really going to see that much more wear for such a short period of time with a 1ft wider blower? The auger width difference most likely makes very little difference and the actual impeller could only be a few inches bigger. So then your really left with how big of a cut in the snow your going to make. Just dont lower the blower all the way down.

 

[Slowpoke Slim]

My biggest concern would be engaging and disengaging the clutch. That is the most wear on any type clutch. If you always do that at idle or just above with no load, I think it will be fine. Once it is locked up it should kill the engine before the clutch slips.

I have to agree with this one.

I don't see you harming the clutch by engaging it at idle. Once it's fully engaged I think you would kill the engine before you could harm the clutch. You don't make enough hp to be able to drive the pto output hard enough to slip against the load on the blower. If you push the blower into heavy snow it will just bog down the engine and probably kill it.

As long as you can engage the clutch with the engine at or near idle, and you don't have to slowly slip the clutch to get it fully engaged against the stationary blower and it's initial resistance to movement, you should be fine. I can't see disengaging the clutch causing any harm as long as you're also not slipping the clutch slowly as it separates from the load.

If you do end up stalling out the engine due to too much load in the snowblower, make sure you don't restart and re-engage the clutch if the blower is sitting there packed up hard with snow. That will probably slip the clutch as it tried to get the extra load of the blower + packed up snow moving again. You'd want to dig out the clogged snow before re-engaging the pto drive.

 

[VroomVroom]

Yeah. I normally only ever took partial cuts. I’m like you fellows.