II have a 170cc offroad buggy and I'm trying to do a mod to the CVT to increase performance. It requires replacing weights in the variator which is behind that big silver fan looking thing, ad I'm trying to get that nut off. Never being much of a mechanic myself I expect someone here has a suggestion I haven't thought of. There is less than 3.5" of clearance between that nut and the shock, and I don't want to think about having to remove the shock, I expect that would require a spring compressor and the possibility of losing fingers, lol.
So the problem is I can't figure out a way to apply enough torque to the nut. That shaft is coming directly from the engine and you can turn it with your hand. I can't figure out a way to lock it down enough to put a lot of torque on it. That fan is aluminum and I know those fins can break and then it would be out of balance, so I don't want to clamp vice grips on them, etc. I've tried holding it with a strap wrench while using a ratchet but can't make it work. I bought a right angle impact wrench with a really tiny head that would work in that space, it's only rated at 70ft/lbs though and that wouldn't break it loose. I can't find a more powerful one that will fit in that space. I'm just using standard 1/4" air hose, is it not getting enough air to deliver that 70ft/lbs? I don't think that nut should be that tight. I've seen youtube vids of people only tightening them to 20ft/lbs, but that could have been a smaller engine (50cc, etc. This style of engine is commonly used in scooters).
I'm trying to not spend hundreds of dollars to remove one nut. I cannot remove that black cover completely because the part that covers the clutch will not clear the frame, I'd have to move the damn engine and that would mean messing with the chain alignment and tension and God knows whatever else. This is why I never became a mechanic, lol. Anyone have any suggestions for breaking that nut loose? BTW it's already on a trailer if anyone wants to have a go at it I'll bring it to you. Thanks in advance.
So the problem is I can't figure out a way to apply enough torque to the nut. That shaft is coming directly from the engine and you can turn it with your hand. I can't figure out a way to lock it down enough to put a lot of torque on it. That fan is aluminum and I know those fins can break and then it would be out of balance, so I don't want to clamp vice grips on them, etc. I've tried holding it with a strap wrench while using a ratchet but can't make it work. I bought a right angle impact wrench with a really tiny head that would work in that space, it's only rated at 70ft/lbs though and that wouldn't break it loose. I can't find a more powerful one that will fit in that space. I'm just using standard 1/4" air hose, is it not getting enough air to deliver that 70ft/lbs? I don't think that nut should be that tight. I've seen youtube vids of people only tightening them to 20ft/lbs, but that could have been a smaller engine (50cc, etc. This style of engine is commonly used in scooters).
I'm trying to not spend hundreds of dollars to remove one nut. I cannot remove that black cover completely because the part that covers the clutch will not clear the frame, I'd have to move the damn engine and that would mean messing with the chain alignment and tension and God knows whatever else. This is why I never became a mechanic, lol. Anyone have any suggestions for breaking that nut loose? BTW it's already on a trailer if anyone wants to have a go at it I'll bring it to you. Thanks in advance.
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