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case 310g crawler

H

hoops

Member
New on forum and posted basically same msg under Case/David Brown tractors. Have 60's case 310g crawler that left track/sprocket locks up when in forward gear and wont move. Crawler will move ok when in reverse gear. Track in bad shape and could be binding up on sprocket in fwd gear as opposed to final drive problem. ?????? thoughts...thxs
 
(quoted from post at 17:41:28 11/26/20) New on forum and posted basically same msg under Case/David Brown tractors. Have 60's case 310g crawler that left track/sprocket locks up when in forward gear and wont move. Crawler will move ok when in reverse gear. Track in bad shape and could be binding up on sprocket in fwd gear as opposed to final drive problem. ?????? thoughts...thxs
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Track would have to be well worn to stop travel. When it stops is the point of one or more of the sprocket teeth bound hard on top of the chain bushings? If not, I would lean toward trouble in the drive. Can you get that track clear of the ground and try it?
 


Well if the sprocket teeth are jamming/wedging on the track bushings that could be it. Can you see if they jammed that way? If they are the track will try to go even tighter than you have it adjusted. Try it with the track off the ground and see if it pops by without the crawler's weight on it. If it doesn't try loosening the track a bit and try it to see if it turns.
 
Some good info below but clear to me some do not understand a 310/350 Series drive system, they always have power to each track, there is no clutch to put one track in neutral on that model, they steer by slowing down one track and speeding up the other, so to check track movement you will have to raise BOTH tracks off the ground, Loren gave you very good advice on the CASE page, he like me has been around these units since they were new,, from what you are saying on the post there you have internal issues,, also as for needing tracks to be super Tight to stay on that is only correct if you have a very worn out undercarriage system, I have owned and ran them for over 50 years, and not just CASE crawlers
 
Thxs to all for the input. Might attempt to get both tracks off ground in warm weather and if the track is not binding and instead have internal problem the machine will be gone. Runs super and great blade but not a project for me. Thxs again
 
(quoted from post at 09:27:51 11/27/20) Some good info below but clear to me some do not understand a 310/350 Series drive system, they always have power to each track, there is no clutch to put one track in neutral on that model, they steer by slowing down one track and speeding up the other, so to check track movement you will have to raise BOTH tracks off the ground, Loren gave you very good advice on the CASE page, he like me has been around these units since they were new,, from what you are saying on the post there you have internal issues,, also as for needing tracks to be super Tight to stay on that is only correct if you have a very worn out undercarriage system, I have owned and ran them for over 50 years, and not just CASE crawlers
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Case Nutty 1660 thank you for pointing out my error. I do know the Cases are built different and don't have steering clutches, but I totally spaced that when I replied, as is clearly evident. I apologize for the error. Jim
 
Jim,, no worries,, if he had a 450 or larger they have the ability to declutch a track, the little guys that all used the Clark power train as you may know all used the same basic trans/finals,,just did not want him trying to raise one track and have it do something he was not expecting,
 
In my neck of the woods that type steering was known as diff steering and was used by many small crawlers derived from a basic ag tractor,usually a drive jamming up in one direction means a bearing is out and allowing the gear to jam up against something in one direction that its close to and can move in the other direction because it is not close enough to jam,big pry bar and check the sprocket for play,you might need to let the track tension off,if the sprocket checks out drain the final drive for that side and inspect it for metal,good luck.
AJ
 
As others have said you might have internal problems. There is a big bearing that when it fails drops one of the balls into the bull gears. Ball is harder than the gears so you will need new gears and bearing. Not a hard job once the track has been removed. BTDT. My 310G crawler needs a new track and pads. If anyone know where to look let me know
 
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