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Repairing track tensioner on allis 653
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AndyT View Drop Down
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Joined: 01 Oct 2017
Location: Vienna Ga
Points: 11 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyT Quote  Post ReplyReply Direct Link To This Post Topic: Repairing track tensioner on allis 653
    Posted: 25 Dec 2018 at 10:45pm
Anybody ever rebuilt a track tensioner on a 653? Need advice on where to find parts and the easiest way to accomplish the task. Is it expensive?

Thanks in advance,
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jerbob View Drop Down
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Joined: 07 Aug 2017
Location: Michigan
Points: 961 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jerbob Quote  Post ReplyReply Direct Link To This Post Posted: 26 Dec 2018 at 6:55am
Hello Andy. Welcome on the forum.

I have not done anything with s AC653 but have rebuilt the track tensioned on my HD16. On my tractor, it is s hydraulic unit that you use a grease gun on s zero fitting to expand a ram to put tension on the idler arm and put pressure on the units. Everything from the grease zeros to the rams themselves were shot. It can be done and not expensive in many cases just labor intensive.

I suggest posting lots of pics of the adjusters and let the group know the problems you are trying to fix. This is s great group and you will get great advise. And let me say again,,,we love pics.
HD16DC, Bobcat 863 Turbo, Oliver 1855, John Deere 855,
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jerbob View Drop Down
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Joined: 07 Aug 2017
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Points: 961 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jerbob Quote  Post ReplyReply Direct Link To This Post Posted: 26 Dec 2018 at 6:57am
Hate spell check. Words changed by iPhone are Grease Zerks.
HD16DC, Bobcat 863 Turbo, Oliver 1855, John Deere 855,
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AndyT View Drop Down
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Joined: 01 Oct 2017
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Points: 11 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyT Quote  Post ReplyReply Direct Link To This Post Posted: 26 Dec 2018 at 8:02am
Thanks for the feedback jerbob. I will get some pics up as soon as I get it cleaned up. Left track tightens up just fine, right side takes grease but doesn’t move. I’m assuming a busted seal is the culprit.
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jerbob View Drop Down
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Joined: 07 Aug 2017
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Points: 961 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jerbob Quote  Post ReplyReply Direct Link To This Post Posted: 26 Dec 2018 at 11:51am
Originally posted by AndyT AndyT wrote:

Thanks for the feedback jerbob. I will get some pics up as soon as I get it cleaned up. Left track tightens up just fine, right side takes grease but doesn’t move. I’m assuming a busted seal is the culprit.


I will send you where I got my seals from. I was able to use a porta power and push the idler arm forward allowing me to be able to remove the idler are and then when off tractor, was able to pull piston, home cylinder walls, and replace inner seal. Once together worked perfectly. Will send pics.

HD16DC, Bobcat 863 Turbo, Oliver 1855, John Deere 855,
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DMiller View Drop Down
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Joined: 14 Sep 2009
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Points: 33294 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 26 Dec 2018 at 1:18pm
Most decent hydraulics shops will have a seal that can work, these were not made specific for AC.
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jerbob View Drop Down
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Joined: 07 Aug 2017
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Points: 961 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jerbob Quote  Post ReplyReply Direct Link To This Post Posted: 26 Dec 2018 at 2:38pm
Originally posted by AndyT AndyT wrote:

Anybody ever rebuilt a track tensioner on a 653? Need advice on where to find parts and the easiest way to accomplish the task. Is it expensive?

Thanks in advance,


Some pics of my rebuild on my track tensioner. I got my seals from an old Agco dealer that took over an Allis Chalmers distributor.







One pic shows seal not holding and grease just pumping everywhere. One pic shows idler arm off unit. I had to re weld the rod as it was cracked. One pic shows wha the piston looks like out of unit and the new seal vs the old one. The old seal looked like it was an old plumbing gasket they put on.
HD16DC, Bobcat 863 Turbo, Oliver 1855, John Deere 855,
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AndyT View Drop Down
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Joined: 01 Oct 2017
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Points: 11 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyT Quote  Post ReplyReply Direct Link To This Post Posted: 26 Dec 2018 at 7:57pm
So, you used the ports power in lieu of separating the tracks? Thanks for the info above.
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jerbob View Drop Down
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Joined: 07 Aug 2017
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Points: 961 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jerbob Quote  Post ReplyReply Direct Link To This Post Posted: 27 Dec 2018 at 3:55am
Yes Andy.

I lucked out and was able to NOT have to split my tracks.

I put the Porta Power again to the idler arm and housing for the recoil housing and was able to not only free up the stuck and rusted idler arm, but move it forward enough to allow me to remove the idler arm assembly intact. I then, with much effort, was able to pull the piston out of the housing (as it was full of dried out old grease and held in my suction) and polish the piston, repair the push rod and replace seal. Works great.
HD16DC, Bobcat 863 Turbo, Oliver 1855, John Deere 855,
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jerbob View Drop Down
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Joined: 07 Aug 2017
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Points: 961 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jerbob Quote  Post ReplyReply Direct Link To This Post Posted: 27 Dec 2018 at 3:59am
Originally posted by jerbob jerbob wrote:

Yes Andy.

I lucked out and was able to NOT have to split my tracks.

I put the Porta Power against the idler arm and housing for the recoil housing and was able to not only free up the stuck and rusted idler arm, but move it forward enough to allow me to remove the idler arm assembly intact. I then, with much effort, was able to pull the piston out of the housing (as it was full of dried out old grease and held in by suction) and polish the piston, repair the push rod and replace seal. Works great.


Made spelling repairs above.
HD16DC, Bobcat 863 Turbo, Oliver 1855, John Deere 855,
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