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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

1972 D5B Grease cylinder-track tensioner

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Nathan Stone

12-26-2005 11:14:09




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Hello. I'm looking for advise from those who know much more than I about these things. I recently purchased this tractor to use around the farm for a couple years to do a few projects. One of my tensioners has a leak in the seal so that I can fill it with grease and get the proper tension, but after I work a while, the grease gradually leaks out to the point where the chain slackens such that I'm afraid it will throw a track. What's the best plan for rebuilding or replacing this cylinder? i.e. what steps should I take to get it off?

Thanks.

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Nathan Stone

12-27-2005 07:33:42




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 Re: 1972 D5B Grease cylinder-track tensioner in reply to Nathan Stone, 12-26-2005 11:14:09  
Thanks again Bob. ajk, thanks for the link, a pic is worth a thousand words as they say.

I may try to tackle this project this weekend as it will be too wet here in Middle Tennessee for any dozin.



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ajk

12-27-2005 00:43:57




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 Re: 1972 D5B Grease cylinder-track tensioner in reply to Nathan Stone, 12-26-2005 11:14:09  
Not butting in but I had the picture of an adjuster posted for someone else before.
AJ



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Nathan Stone

12-26-2005 19:04:26




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 Re: 1972 D5B Grease cylinder-track tensioner in reply to Nathan Stone, 12-26-2005 11:14:09  
Thanks for the replies fellas. Sounds like I don't need to remove the compression spring? I was thinking that if I removed the tension release plug in the cylinder, then used a come-along to compress the cylinder by squeezing the front idler and rear sprocket toward one another I might get enough room to get the cylinder out. Any comments/predictions on the likelihood of success of this scheme?

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Bob/Ont

12-27-2005 05:41:31




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 Re: 1972 D5B Grease cylinder-track tensioner in reply to Nathan Stone, 12-26-2005 19:04:26  
Yes Nathan do that then seperate the cyl from the flange and force the idler ahead again for some room to work. Make sure to secure the idler forward while working on the seals.
Later Bob



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Bob/Ont

12-26-2005 18:23:11




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 Re: 1972 D5B Grease cylinder-track tensioner in reply to Nathan Stone, 12-26-2005 11:14:09  
Nathan, first make sure the tension release fitting, the Tall one with a 7/8" hex next to the fitting you put the grease into is tight. The one you put grease into also has a similar hex but should be covered with a guard so it can't be loosened. If the guard is broken away or missing put a wrench on it too. If they are tight you will likely need to break the track, unbolt the front flange from the cyl, push the idler ahead and replace the piston seal as well as the two rings at the flange. Could also be some cyl dammage but reseal first and try.
Later Bob

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hector gemme

12-26-2005 13:38:04




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 Re: 1972 D5B Grease cylinder-track tensioner in reply to Nathan Stone, 12-26-2005 11:14:09  
HI That should be the ring seal betwing the cylinder and the rod push idler you have to take off the 4 screw who holde the cylinder to the rod and take off the valve on cylinder and the grease should going out and that make the chain slake and after you should be able to separate the cylinder to the rod and change the seal and ring good luck . HECTOR



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