3 pts snow blower throw further

[pekan]

Hi guy's I have a 64in puma snow blower made by Pronovost in Quebec on a Kioti CK 35 , it's does not throw snow too far enough for my need, maybe 10 feet max. have any suggestion.

 

[mcfarmall]

Broken shear pin on the impeller? Possible sheared or worn key on the impeller shaft? A friend of mine bolted sections of truck mud flap material on the vanes of the impeller on his snowblower and WOW did it make a huge difference in performance!

Grab hold of the impeller while the tractor is shut off and see if you can get any movement out of it without backdriving the PTO. Belt, gearbox, roller chain, shear pin, gotta be one of those.

 

[Reb954]

Along with the above, what are the snow conditions? Wet and heavy or dry and fluffy?

 

[pekan]

Well snow was dry not to heavy no broken or loose parts but have about 1/4 inch between the imperler and the drum ...

 

[LouNY]

Tighten up the clearance between the impeller and drum, are you at full pto speed? Also from what little I've done with blowers they worked better the more snow going thru them.

 

[Reb954]

The 1/4" won't matter.

How long have you had the blower?

Has it ever thrown snow further?

What RPM are you running the engine?

How deep is the snow you are moving?

How fast are you running the tractor?

I'm still with mcfarmall, check further for sheared pins and such.

 

[grsthegreat]

i have a 1/4" on my quickattach brand blower and it will shoot dry snow 40 feet. wet snow about 15 feet. my old farm king 60" blower on a john deere 28 HP tractor shot it at least 30 feet. something doesnt seem right with your unit. are you operating it at proper engine rpm?

they do make poly liner kits that supposedly help with distance thrown, but ive never needed these and have been moving snow with a blower for 24 years

there is a member here named Leonz (i believe that right) thats a real pro when it comes to snow blowers (or casters as he calls it). hopefully he'el chime in

 

[Wolfy]

The best thing I ever did for my two snowblowers was to get a can of paste wax for cars, and smear it all inside the snowblower housing, really lets the snow slide and fly off.

 

[pekan]

The 1/4" won't matter.


How long have you had the blower? buy it in 2009 brand new

Has it ever thrown snow further? not really




What RPM are you running the engine? turning around for 540 pro rpm

How deep is the snow you are moving? between 6 to 16 inch but have power enough

How fast are you running the tractor? normal depend on condition


I'm still with mcfarmall, check further for sheared pins and such. and everything work ok pin bolt chain

 

[Erik M]

Are all blower grease fittings and gears regularly well lubricated? Does everything rotate smoothly when the PTO is disconnected? Speed, snow depth and snow density has a lot to do with how well the blower throws snow in my experience. Wax works well for maybe 15 mins and then the abrasive snow has cleaned it off.

 

[pekan]

Yes everything is smooth and that snow blower just blow a few time a years for personal use only grease and lubricated well done.....

 

[oosik]

Something simply is not right with the way your unit is set up. I used a Pronovost 72" some-thing-or-other on my tractor last year. The snow was dry but compact and about 20 to 24 inches deep. Under these condition this setup threw the snow at least 60 to 70 feet.

Granted my tractor is 56 PTO HP but your 28 PTO HP should be doing a lot better than 10 feet.

Someplace a pin has sheared or a belt is slipping.

 

[Halftrack]

If you check the Provonost website, they advertise a step up gearbox for their smaller units. It bumps up the 540 to about 740. A lot of the older Yanmar's, and other makes had multiple speed pto's with a 720 to 760 range and the Puma may be a carry-over from those days. My Yanmar branded blower is dismal at 540 but would be impressive at 740. I wonder if a member has had experience with the step-up gearbox.

 

[leonz]

Hello Pekan,


The members of the forum have gone from A to Z in what you should be looking at IF AND ONLY IF you are running the PUMA at the 540 RPM engine speed at a low travel speed in reverse to cast the snow back.

Are you using the Pronovost provided PTO shaft that came with the 64 inch PUMA?

IS the PUMA you own equipped with the accelerator option to speed the impeller to 756 R.P.M. at the 540 R.P.M. PTO speed?


It may be that the Power take off needs to be adjusted as it could be slipping.

This is only possible if you have "thoroughly inspected" the shear pins on the impeller shaft to the gear box and the shear pins/keys in the cross shaft to the chain drive?

You should:

1. use a paint stick to mark the PTO shaft at both ends to check for slippage on the PTO shaft
2. use a paint stick to mark the impeller shaft at the shear pin to check for slippage
3. Mark the cross shaft at the drive sprocket with the paint stick to check for slippage and a partially sheared key


With the PTO shaft disconnected from the mule you should hold the PTO Shaft at the yoke if possible with a pipe wrench and have someone turn the impeller with some force to see if the key may be sheared as the shaft and shear pin could be binding to a point where it will have very little torque to rotate the impeller.

As you have a hydro powered mule you also may be low on oil or the filter or filters may need to be changed.

If you are running the mule at the required engine speed for the 540 RPM rear P.T.O. speed and your snow is not being blasted out of the chute you are losing the torque needed to spin the impeller.


If everything is right, the oil level is ok, the shear pins and keys are intact and the PTO shaft is ok you probably have to have the P.T.O. control adjusted on your Kioti as it is not fully in contact with the driven shaft(PTO stub shaft. I hope that is the only issue.


I would call your Kioti dealer and ask about the transmission and oil filters and whether you have to have it adjusted to gain more torque or whether the clutch discs need to be replaced.

 

[Sawyer Rob]

Some blowers just won't and aren't going to throw the snow real far. The reason is, they don't have a fast enough "fan speed"...

I had an Alloway (same blower deer sold) that was that way, the fan just didn't turn fast enough to throw the snow very far...

There was NO fixing that, so I sent it down the road!

SR

 

[oldnslo]

Some blowers just won't and aren't going to throw the snow real far. The reason is, they don't have a fast enough "fan speed"...

I had an Alloway (same blower deer sold) that was that way, the fan just didn't turn fast enough to throw the snow very far...

There was NO fixing that, so I sent it down the road!

SR

My fix for the Alloway is to run the PTO at around 650 RPM. Throws the snow just fine then. On my tractor this is easy to do since the Rear PTO can run either 540 or 960. Use 960 and run the engine speed lower. Never had an HP issue yet.

 

[Reb954]

Assuming everything else like shear pins, keys and such are ok then your only option may be to get the accelerator so the fan rpm is faster.

I have a WIFO 78" blower with a 27" fan that runs at 540 rpm, it throws snow fine. Pronovost shows your Puma has a 22" housing so roughly a 21" fan. 3" difference in the fan radius can make quite a difference in centrifugal force to throw the snow.

By Pronovost even offering the accelerator for their home units suggests to me this has been a constant problem for them.

 

[Reb954]

If my calculations are correct the following applies,

a 21" fan x 3.14= 65.94" circumference, x 540 rpm = the fan tips running at 35607 inches per minute.
a 27" fan x 3.14= 84.78" circumference, x 540 rpm = the fan tips running at 45781 inches per minute.
a 21" fan x 3.14= 65.94" circumference, x 756 rpm = the fan tips running at 49850 inches per minute.

As you can see, fan diameter and rpm make quite a bit of difference in centrifugal force to throw snow.

 

[The Deerslayer]

I have the same model blower and it throws the type of snow you described about 30-50 feet.

Looks like the responses here have covered most everything. I'll mention one that you and others may find a bit silly, but bears getting a mention. Are you running it with the chute deflector in a low or the lowest position? If and when I do this I get about a 10 foot throw distance.

 

[Sawyer Rob]

My fix for the Alloway is to run the PTO at around 650 RPM. Throws the snow just fine then. On my tractor this is easy to do since the Rear PTO can run either 540 or 960. Use 960 and run the engine speed lower. Never had an HP issue yet.

Agreed, but my tinker toy tractor didn't have enough nuts to run the blower in the higher pto speed unless the snow was pretty light, so that was a problem...

SR