JAC213

When I start my snow blower only the left side of the auger turns. Why? How do I fix it?

MrChooks

Hi & welcome to TSF

Can you be a bit more specific - can you post Brand and Model of your snow blower - that way we will all know what machine you are having problems with

Basementgeek

Sounds like you ran over something and broke the shear pin/bolt.
Shear bolts are made out of aluminum, never use a steel bolt. They are supposed to break, if you hit something. It is a protection device against damange to the snow blower.

Look at the auger, do you see a hole ? Look at the good auger, you should see a bolt on the "shaft". Most repair shops should be able to supply them. Buy two of them that way you will have a spare.

BG

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MrChooks

BG is absolutely right - it is almost certainly a broken shear pin - I thought about this this morning after my original post (on the way to lunch - a failing I have developed as I get older! )

The pin will fit into the drive shaft and its location should be quite obvious - look at your "good" auger (the pin will probably be near the outside on the machine chassis) and you should see a "pin" that will be missing on the inoperative auger.

Shear pins are very inexpensive and any outdoor equipment shop should be able to supply you with a new one (Tip - by 2 or 3 and put them away somewhere so you can find them if you need one in the future)

I don't want to sound like a "boring old fart" - even if I am getting that way - but DO NOT FALL FOR THE TRICK OF USING A BOLT IN PLACE OF THE SHEAR PIN!!! You need to think about shear pins as a "mechanical fuse"

Whilst your pin is probably a piece of 1/4 bar - it IS NOT A BOLT - they are generally made of soft "key steel" and designed to fail in the event an auger hits something hard. The idea is that it is better to trash a $1.00 shear pin than to strip the teeth off a $500.00 gear box!!! So if you use something that doesn't fail as the share pin is designed to - then you can kiss good bye to your gear box

JAC213

It is a Jacobson 11hp snow blower. I changed the shear pin and it still doesn't work.

JAC213

It is a Jacobson 11hp snow blower. I changed the shear pin and it still doesn't work.

JAC213

It is a Jacobson 11hp snow blower. I changed the shear pin and it still doesn't work.

MrChooks

Damn!! I would have bet money that BG was correct and the shear pin was the culprit!!.

OK, when you engage the auger drive - can you see the input shaft turning on the good side and if so - what can you see moving on the "dead" side??

If the shear pins are OK - then the problem has to lie with the clutching or the drive to, or from, the gear box on the dead side.

Basementgeek

Is there some type of gear box between the two aguers ?

Got a model No of the snow blower ?

BG

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MrChooks

Here is the link to the Jacobson parts list for what I am assuming is your 11HP snow blower.

http://partsradar53.arinet.com/scrip...r&partner=ARNC (Key in model 1130DLE and the parts list and parts view should come up on your screen)


If you look at the "Gear case" and "Auger drive" pages - you can see there is only one gear box (worm drive) driving a single auger shaft.

So (assuming I have the correct parts list) if one side of your auger rotates and the other doesn't it really can only be that:

1/ You haven't got the shear pin properly engaged thru both the Auger drive shaft (the outer bit) and the rake / gear box drive shaft (the inner shaft) - so pls check that the pin is properly engaging both the outer and inner auger shaft drives, OR

2/ The rake shaft (part no 18) has broken - which is a much bigger repair job

So if the shear pin is correctly located - I think you are looking at a new rake shaft. At least - given that one side turns - you are unlikely to have damaged the gear box itself - which is a major bonus, as they will be expensive