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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

76' D3 Track Spring

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Matt

11-20-2003 07:52:08




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I just bought a D3 and noticed after I took the covers off the track that the tension spring for the front idler is broke. My question is will this hurt anything? It is still in place and has tension on it. The track on the side that is broke has sightly more slack than the other. How hard is this to change? How much?




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Bob/Ont

11-20-2003 08:39:33




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 Re: 76' D3 Track Spring in reply to Matt, 11-20-2003 07:52:08  
Matt, you should change the spring. There is a bolt or stud in the center of it with a nut on the back. Take the nut off and clean up the threads. Then put the nut back on and tighten it up as tight as you can. Put a big piece of tough steel 2+" in dia in the sprocket and back up. This will force the spring back more and you can tighten the nut moreuntill it is loose on the front stops that hold it there. NOW BE VERY CAREFULL around Recoil Springs, they contain a lot of Energy when Compressed. When you get the spring compressed, split the track, push the idler forward untill the extention rod is out of the spring pilot. Take off the stops for the pilot and lift the spring out. Handle the spring like it was nitro glycerine and take it to a shop that can disassemble and assemble the the unit and change the spring. They will have a press for this, DO NOT ATTEMPT TO CHANGE THE SPRING YOURSELF. When you get it back, mount the spring, push the idler back into place, couple the track and adjust it tight. Put the piece of steel back into the sprocket and force the spring back untill the nut is free. Back the nut off to the end of the stud and lock it there. Move the machine forward and take the piece of steel out of the track. Adjust the tracks by forcing the idler out as far as possible then backing them off 3/8". If you don't feel compfortable doing this job yourself, hire someone that does this kind of work regularly. Later Bob Later Bob

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Matt

11-20-2003 09:01:46




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 Re: Re: 76' D3 Track Spring in reply to Bob/Ont, 11-20-2003 08:39:33  
Thanks Bob, sounds like quite the job.... I may need to leave this to the professionals.



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Bob/Ont

11-20-2003 10:03:31




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 Re: Re: Re: 76' D3 Track Spring in reply to Matt, 11-20-2003 09:01:46  
It might be better Matt, I like to help people but I don't want to help someone get hurt. If the spring is broken near one end it will likely be okay untill you need some undercarrage work done. Later Bob



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jim

11-20-2003 11:42:25




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 Re: Re: Re: Re: 76' D3 Track Spring in reply to Bob/Ont, 11-20-2003 10:03:31  
it's not that bad to do,the way we do them from d3's-d8's is to cut the broken spring two or three more times with a torch so there is no tension left on at all,the reason we do that is the rod and nut assembly is more often than not to rusty to safely cage spring to remove,and it's alot faster.when ordering new spring order new rod and nut.www.regalcorp.com is a very good aftermarket source



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Wayne

11-21-2003 22:05:19




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 Re: Re: Re: Re: Re: 76' D3 Track Spring in reply to jim, 11-20-2003 11:42:25  
I have to agree with Jim, that's the fastest as well as safest way to take one out. New parts are alot cheaper than the cost of a funeral.



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