examine the roller chain for wear using what I mentioned above.ģ. Check to see if the roller chain is looseĢ. If the chain needs to be replaced it will have rollers that are very loose around the pins and or the rollers will slide from side to side if they are worn out and you will see lots of wear marks on the inside of the roller chain side straps.ġ. Keep in mind that the chain will heat up over time and it needs to be kept tight to work to transmit the power evenly and if the chain is very worn or loose it can cause the shear pins to break if there is a lot of slop in the chain or if the chain is stretched. IF you have enough slack to push the lower run of chain up that is much too much slack. the top row of the roller chain must always be tight as it is being moved only in the forward direction and the bottom half of the chain needs to be nearly as tight as the top row of chain but it can halve about 1/8-3/16 inches of slack(almost 5 millimeters) on it and NO MORE. I need for you to keep this in mind when you check the chain tension that it has ot have tension on the top lacing of roller chainġ. Slop will cause unwanted torque loads in the system. No slop in the final fitting of the shear bolt.
The "object" has either been blown out or is up there in the pile ahead of the blower.Īnother thought - when you install a new shear bolt - it should be wrenched down pretty tight. The bolt has sheared - the tension has released. There is an idler sprocket that will allow you to adjust chain tension.Īlso - that object that has caused your bolt to shear will seldom be right there in the auger or impeller for you to find. Are you pushing a big "glop" of snow ahead of the blower. Unfortunately - I got real good at a fast replacement of blown shear bolts.Īre you going too fast.
I always had a goodly supply of shear bolts carried on the tractor. That's all the time it would take for the wet snow to freeze up and "BING" - another sheer bolt. Stop for a moment to catch my breath and massage my sore neck & shoulders. A rock, an old chunk of wood, even a frozen pocket gopher, chunks of ice. However, in the day - I always figured to blow, at least, two shear bolts on the first clearing of my mile long driveway. The days of a 3-point blower and going in reverse are loooong over. I now have a big enough tractor to only need a heavy duty rear blade.
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