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#1
07-20-2014, 07:25 AM
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1250 vibration
My neighbor recently bought a 1250. He replaced the rear engine mounts with neoprene bushings bought at Napa auto. The engine runs great at idle but when the throttle is increased to max there is a bad vibration that seems to be coming from the rear part of the tractor. He said the vibration was there before replacement but it was not quite as bad as now. The drive shaft was removed to install a new fan, but shaft appears to be straight and true when running. One blade broke off the fan during installation, Any suggestions? Also one other question it is really easy to move the tractor with the engine off... just push or pull and the rear wheels roll, Is that normal for a hydro?
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Cub 1810 Cub 147 with QA-42 snow thrower and soft cab Cub 100 
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#2
07-20-2014, 07:51 AM
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I would look at the Flex Disc(s) and the Coupler Bushing(s) at both ends of the drive shaft.
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[B]Roland Bedell[/B] CC Models: 100, 105, 1450, 782, (2) 784, & 2072 [SIZE="4"][B][COLOR="Red"]Buy:[/COLOR][COLOR="Blue"] Made in the USA[/COLOR][/B] [/SIZE]:American Flag 1:
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#3
07-20-2014, 08:25 AM
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You can move the tractor a short distance, slowly, but towing or moving a long distance can damage the hydro, engine or no engine.
Vibration, i.e., tractor shaking could be the other iso mounts, or the driveshaft. If you remove the tunnel cover and run the engine, you might be able to see what is shaking.
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#4
07-20-2014, 09:12 AM
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Thanks for the replies... Running on high throttle with the tunnel cover off the shaft looks smooth, don't see any wobble. Maybe will try running with drive shaft removed. I'm not sure if he replaced the other mounts. I do believe he had the rag joints apart.... I will check them again
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Cub 1810 Cub 147 with QA-42 snow thrower and soft cab Cub 100
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#5
07-20-2014, 09:20 AM
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He said something about the ballance gears being removed from the engine to prevent future damage from failure? Im not sure what these gears do?
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Cub 1810 Cub 147 with QA-42 snow thrower and soft cab Cub 100
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#6
07-20-2014, 10:43 AM
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[B]Roland Bedell[/B] CC Models: 100, 105, 1450, 782, (2) 784, & 2072 [SIZE="4"][B][COLOR="Red"]Buy:[/COLOR][COLOR="Blue"] Made in the USA[/COLOR][/B] [/SIZE]:American Flag 1:
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#7
07-20-2014, 11:01 AM
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the balance gears were more for at idle low engine speed vibrations. there's little to no difference WOT. you could have the new relief valves with out the button. then they roll pretty easy right away. like the others have suggested I'd be looking at the driveshaft rag joints and couplers. they see allot of wear and damage from running with bad mounts when everything is out of alignment.
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#8
07-20-2014, 12:24 PM
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Hi, Burgy Here..
It's my unit, I pulled the urethane bushings out this morning. puting the old ones back in using the best ones in the rear and bottom. The vibration is all but gone, will get new mounts when it starts acting up again. The next issue is the fuel tank/plastic/ PO must have cracked it and tried to fix with not so good stuff. Guess I will have to find another one. Thanks
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#10
07-20-2014, 01:41 PM
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Cub 1810 Cub 147 with QA-42 snow thrower and soft cab Cub 100
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