Noma Snow Blower Question
#1
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Thread Starter
Join Date: Dec 2007
Posts: 5
Noma Snow Blower Question
Have a Noma Snow Blower and the aguer does not disengage when the handle is released I backed off the idler pulley as much as possible but still
the auger continues to to turn. I thought the belt might be the wrong size as the previous owner says he replaced the belts Any suggestions ?? would be greatly appreciated
the auger continues to to turn. I thought the belt might be the wrong size as the previous owner says he replaced the belts Any suggestions ?? would be greatly appreciated
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#3
Member
Join Date: Nov 2005
Location: USA
Posts: 467
Noma snow blower
Have a Noma Snow Blower and the aguer does not disengage when the handle is released I backed off the idler pulley as much as possible but still
the auger continues to to turn. I thought the belt might be the wrong size as the previous owner says he replaced the belts Any suggestions ?? would be greatly appreciated
the auger continues to to turn. I thought the belt might be the wrong size as the previous owner says he replaced the belts Any suggestions ?? would be greatly appreciated
AJ
#4
Member
Join Date: Jan 2007
Location: MA
Posts: 514
Numbers would be helpful but try this.
Most snow blowers the auger belt is loose and then tightened when lever is squezed and idler pulley tightens belt to engage auger.
There should be belt fingers, either 2 or a u shaped over the top. These need to be close enough to the belt to apply pressure to push belt up off the top of the pulley if that makes sense. Without this adjustment gravity takes over and weight of belt brings it down onto the pulley, thus turning auger.
I hope this makes sense and helps. Hopefully previous owner did not remove belt fingers.
Most snow blowers the auger belt is loose and then tightened when lever is squezed and idler pulley tightens belt to engage auger.
There should be belt fingers, either 2 or a u shaped over the top. These need to be close enough to the belt to apply pressure to push belt up off the top of the pulley if that makes sense. Without this adjustment gravity takes over and weight of belt brings it down onto the pulley, thus turning auger.
I hope this makes sense and helps. Hopefully previous owner did not remove belt fingers.
#5
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Thread Starter
Join Date: Dec 2007
Posts: 5
Noma snow blower
It is a 827 1033 Noma snow blower does that help ?
#6
Those are two conflicting SERIES numbers, one indicates you have a 8-horse, 27-inch path machine and the other indicates you have an 11-horse, 33-inch. What we would like is the model number off of the ID tag (sticker) from the chassis just below the engine. My bet is that you have the incorrect belt on this machine. Post back with the model number!
#7
Member
Join Date: Mar 2009
Location: Mainer
Posts: 5

Hi, I have the same machine, now about 6-7 years old with the same problem. The source of the problem as someone else mentioned is that the plastic brake shoe on the spring-loaded arm inside is worn out. It is grooved so far down it no longer functions properly and must be replaced.
The other guy who advise about the two guides above the drive pulley is "right on". If they are not adjusted properly this will lead to the belt engaging lightly on the drive pulley. I just discovered this fact and now the auger stops, mostly.
I have another problem - my auger belt only lasts one snowstorm. I buy the good GATES belts and cannot figure out why this is happening after so many years of no problem. The belt literally stretches a full 1/2" after one run. You cannot adjust sufficiently to compensate for it. I tried buying the next size down (1/2" shorter) but it will not fit over both pulleys. HELP!
The other guy who advise about the two guides above the drive pulley is "right on". If they are not adjusted properly this will lead to the belt engaging lightly on the drive pulley. I just discovered this fact and now the auger stops, mostly.
I have another problem - my auger belt only lasts one snowstorm. I buy the good GATES belts and cannot figure out why this is happening after so many years of no problem. The belt literally stretches a full 1/2" after one run. You cannot adjust sufficiently to compensate for it. I tried buying the next size down (1/2" shorter) but it will not fit over both pulleys. HELP!

#8
Member
Join Date: Jul 2006
Location: Central New Hampshire
Posts: 754
Actual "Belt stretching" does not happen. What happens is the sides of the belt wears causing it to ride lower in the pullies.
I would take a close look at the auger bearing to make sure it spins freely. Remove the belt, then spin the impeller and listen to it and feel it. If it sounds like it is "growling", you need a new impeller bearing. Another thing to look for is worn bushings on the auger. Since the auger is directly connected to the impeller, anything in that system can cause the belt to wear. Also, check the gearbox lube.
I would take a close look at the auger bearing to make sure it spins freely. Remove the belt, then spin the impeller and listen to it and feel it. If it sounds like it is "growling", you need a new impeller bearing. Another thing to look for is worn bushings on the auger. Since the auger is directly connected to the impeller, anything in that system can cause the belt to wear. Also, check the gearbox lube.
#9
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Join Date: Mar 2009
Location: Mainer
Posts: 5
Belt wear on NOMA 827
Hi,
Thanks for your response. It makes sense because the one thing I forgot to mention is that I discovered belt fibres inside the drive train compartment when I had to change the shear bolt in the drive train for the millionth time this winter. (How does it shear a grade 8 bolt anyway???). I think you may have something as far as the impeller bearing is concerned. I will check them out Sunday (it is actually supposed to break freezing for the first time in a week - was 4 degrees these last two mornings!) The impeller spins freely, but checking it without the belt will allow me to see if there is wobble - and I am betting there is. Also, would rust on the inside of the pulley cause this same issue? I noticed that the impeller pulley is pretty badly rusted where the belt runs in it - which was surprising as I thought it would be shiny - like a snowmobile pulley normally is....that would cause shredding too.
Thanks for your response. It makes sense because the one thing I forgot to mention is that I discovered belt fibres inside the drive train compartment when I had to change the shear bolt in the drive train for the millionth time this winter. (How does it shear a grade 8 bolt anyway???). I think you may have something as far as the impeller bearing is concerned. I will check them out Sunday (it is actually supposed to break freezing for the first time in a week - was 4 degrees these last two mornings!) The impeller spins freely, but checking it without the belt will allow me to see if there is wobble - and I am betting there is. Also, would rust on the inside of the pulley cause this same issue? I noticed that the impeller pulley is pretty badly rusted where the belt runs in it - which was surprising as I thought it would be shiny - like a snowmobile pulley normally is....that would cause shredding too.
#10
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Join Date: Jul 2006
Location: Central New Hampshire
Posts: 754
First of all, you shouldn't be using grade 8 bolts in the auger. The "shear pins" are soft and made to break. Otherwise, you would take out the gears in the gear box which run $50 or more each. A shear pin for $2.00 is a lot cheaper and less work to replace.
A rusty pulley will act like sand paper and wear the belt. Clean the pullies with fine grit sand paper or scotch brite.
Is the snowblower left outside? That can cause rusting.
Your snowmobile pullies are aluminum and there for do not rust.
Your snowblower pulley is steel and does rust.
A rusty pulley will act like sand paper and wear the belt. Clean the pullies with fine grit sand paper or scotch brite.
Is the snowblower left outside? That can cause rusting.
Your snowmobile pullies are aluminum and there for do not rust.
Your snowblower pulley is steel and does rust.
#11
Member
Join Date: Mar 2009
Location: Mainer
Posts: 5
Drive bolts shearing in NOMA 827
First of all, you shouldn't be using grade 8 bolts in the auger. The "shear pins" are soft and made to break. Otherwise, you would take out the gears in the gear box which run $50 or more each. A shear pin for $2.00 is a lot cheaper and less work to replace.
A rusty pulley will act like sand paper and wear the belt. Clean the pullies with fine grit sand paper or scotch brite.
Is the snowblower left outside? That can cause rusting.
Your snowmobile pullies are aluminum and there for do not rust.
Your snowblower pulley is steel and does rust.
A rusty pulley will act like sand paper and wear the belt. Clean the pullies with fine grit sand paper or scotch brite.
Is the snowblower left outside? That can cause rusting.
Your snowmobile pullies are aluminum and there for do not rust.
Your snowblower pulley is steel and does rust.

For the impeller drive belt wear problem I will add inspection of the impeller pulley to my Sunday plan of the day.
#12
Member
Join Date: Jul 2006
Location: Central New Hampshire
Posts: 754
Hi - Yes, I know I shouldn't be using Grade 8 (or stainless) bolts for the drive. (I actually am an engineer), however the fact of the matter is when I put in a shear bolt it won't make it down the driveway once before it shears. There is definitely something going on with this system too. I think that the problem is the drive chain is really worn and has a lot of play in it. On my motorcycle I can adjust for the gradual wear and stretching that naturally occurs. There is no binding on any part of the system and I have always kept all shafts and bearing well lubricated. This Spring I am going to see if I can replace the chain and eliminate that possiblity. The snowblower is normally stored in a shed, but last year I tore the shed down and it took me 4 months to get to building a new one and a very wet summer it was here in Maine.
For the impeller drive belt wear problem I will add inspection of the impeller pulley to my Sunday plan of the day.

For the impeller drive belt wear problem I will add inspection of the impeller pulley to my Sunday plan of the day.
"a shear bolt it won't make it down the driveway once before it shears."
The augers are definatly hitting something. May be bent on the end and scraping the sides.
You probably have even more problems now since you have been using grade 8 bolts. Now when the bolts should have sheared, they didn't. And something has to give. Most likely the gear in the gearcase is stripped, which will cause your other problem of wearing the belt. The gear that turns the auger is on the end of the shaft of the impeller. The gear in the gearcase is brass or aluminum. When the auger gets stuck, the soft gears will wear quickly. I had 3 in the shop this season where the gear looked more like a washer.
#13
Member
Join Date: Mar 2009
Location: Mainer
Posts: 5
Grade 8 bolts shear in DRIVE TRAIN
Hi, I think there is a little confusion. The bolt that is shearing is the wheel drive axle/chain gear shear bolt. The augers are fine - believe me I would never use anything but a shear bolt on those guys, I have too much experience hitting rocks, power cords, and chunks of ice at the end of the driveway.
Yes so this machine has two separate problems - wearing drive belt on the impeller and shearing bolts continuously on the wheel drive system.

Yes so this machine has two separate problems - wearing drive belt on the impeller and shearing bolts continuously on the wheel drive system.

#14
Member
Join Date: Nov 2005
Location: USA
Posts: 467
The bolt in the drive train should be a grade 8 bolt! But it must be partially threaded and long enough so that no thread is in the sprocket use a lock nut on the bolt. The bolt should spin freely. If it is tight vibration will cause the nut to continue to tighten until it breaks. The correct part number is 01X193MA
AJ
AJ
#15
Member
Join Date: Jul 2006
Location: Central New Hampshire
Posts: 754
Hi, I think there is a little confusion. The bolt that is shearing is the wheel drive axle/chain gear shear bolt. The augers are fine - believe me I would never use anything but a shear bolt on those guys, I have too much experience hitting rocks, power cords, and chunks of ice at the end of the driveway.
Yes so this machine has two separate problems - wearing drive belt on the impeller and shearing bolts continuously on the wheel drive system.

Yes so this machine has two separate problems - wearing drive belt on the impeller and shearing bolts continuously on the wheel drive system.

I agree with AJ.
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