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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

clark bobcat 610

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don kain

12-14-2013 18:36:57

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while operating my 610 bobcat today to move snow,over a 5 to minute period,the travel speed began to slow down to a creep.I looked at the variable speed sheeve and it opened and closed with the lever.I checked the level of the hydraulic fluid at the fill level plugs and it was ok.something tells me there maybe a problem internally in the chain case either with the chains or the clutch(S)>any idea what to look for?Your ideas and help would surely be appreciated.thank you

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12-15-2013 16:42:56

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 Re: clark bobcat 610 in reply to don kain, 12-14-2013 18:36:57  
Don, if it should happen again stop and look @ the sheave on the engine to see if it's closed or open. If it has slid apart it's an oil leak unless you unknowingly bumped the lever, BTDT. Good luck and I hope it never happens again

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Mike Kork

12-15-2013 01:13:30

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 Re: clark bobcat 610 in reply to don kain, 12-14-2013 18:36:57  
Did you back the old girl in to some deep snow?
Mine would do that when the belt got wet from melting snow.

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don kain

12-15-2013 15:05:47

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 Re: clark bobcat 610 in reply to Mike Kork, 12-15-2013 01:13:30  
thank you for your,I did not back into any snow the 610 just came to a creep while plowing snow.ran the variable drive open and closed and the speed did not change.was only a quarter block from home so quit pushing snow and headed home while it was still able to move forward,thou creeping,home.Put it back in the garage.rechecked fluid level today and it was fine.Took it out to see how it would operate today and it started working okay again.go figure?

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12-14-2013 20:58:39

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 Re: clark bobcat 610 in reply to don kain, 12-14-2013 18:36:57  
I just plowed my parents driveway tonight with my 610. I don't see how anything beyond the jackshaft could slip. Are your levers adjusted correctly? Is your variable sheave backing off hydraulically after you put ti in "high"?

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don kain

12-15-2013 15:08:22

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 Re: clark bobcat 610 in reply to Mikefromcny, 12-14-2013 20:58:39  
thank you for your interest and response .please read my post from today 12/15/2013 thank you again

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12-14-2013 20:58:28

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 Re: clark bobcat 610 in reply to don kain, 12-14-2013 18:36:57  
When mine does that it's a leak somewhere between the valve and the variable sheave on the engine. I've had O-rings on the cylinder inside the sheave start leaking and cause it to slow, it's hard to see that but try and look between the sheave and the engine to see I there is any fresh oil. It also could be o-rings in the valve that are worn and letting oil by. If it moves good at high speed and the clutches aren't slipping then they're fine. I'm pretty sure it won't be in the chain cases. All that's in there are sprockets,chains and the wet clutches you engage when you move the levers.

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don kain

12-15-2013 15:12:21

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 Re: clark bobcat 610 in reply to IowaJohn, 12-14-2013 20:58:28  
thank you Iowa John for your help and info.As posted its working again.Why,dont know.I am going to drain the hydraulic fluid . put fresh fluid in after changing the filter and go from there. may take awhile to post after waiting and trying it awhile to see if problem reoccurs,thank you for your help and interest

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