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955 12A Steering Levers Stuck

955 12A Steering Levers Stuck

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d9gdon
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So I let my 955 12A track loader set out for about a year and a half and when i started it, the steering levers are frozen up. They are free on the cross shaft but they won't actuate the steering clutches. 

I don't know if the clutches are stuck in the drum or what.
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Sat, May 28, 2022 8:01 AM
Old Magnet
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More than likely it's the linkage pivot bearings that are froze up, the ones you can't get to to lube although you can access the upper ones by removing the cover.
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Sat, May 28, 2022 8:14 AM
d9gdon
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Reply to Old Magnet:
More than likely it's the linkage pivot bearings that are froze up, the ones you can't get to to lube although you can access the upper ones by removing the cover.
I think I'll take off the top cover tomorrow and see what's going on in there...I have a parts book coming from Ebay. I guess the upper ones are lubed by zerks that I see on top of the cover.

My danged clutch lever is seized up on the cross bar too...I can heat it up and get it to working but 5 minutes later it's seized again. It's not turning the cross shaft, the brake pedals are working fine.
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Sat, May 28, 2022 8:36 AM
Old Magnet
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Reply to d9gdon:
I think I'll take off the top cover tomorrow and see what's going on in there...I have a parts book coming from Ebay. I guess the upper ones are lubed by zerks that I see on top of the cover.

My danged clutch lever is seized up on the cross bar too...I can heat it up and get it to working but 5 minutes later it's seized again. It's not turning the cross shaft, the brake pedals are working fine.
If it has zerks in the cover someone has added them. Problem is there is an air gap between the cover and the pivot bearing so unless there is some type of coupling (big fat 0-ring maybe) the grease would not penetrate the bearing.
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Sat, May 28, 2022 9:22 AM
rax200
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Hi d9gdon,

here is a couple of the steering clutch cranks in side my 7U which shoul be the same, they where stuck solid too. When I pulled them apart they where rusted solid.

 [attachment=67904]D4 7U Inside Cover.jpg[/attachment]
 [attachment=67905]D4 7U Pivot Cranks.jpg[/attachment]

Regards
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Sat, May 28, 2022 4:20 PM
d9gdon
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Reply to Old Magnet:
If it has zerks in the cover someone has added them. Problem is there is an air gap between the cover and the pivot bearing so unless there is some type of coupling (big fat 0-ring maybe) the grease would not penetrate the bearing.
Yes OM, I see the grease zerks are not on the cover but mounted ahead of the cover.

I'm going to pull that cover and see if I can get some penetrant in there...and go from there.

Thanks to you and Daryl.
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Sat, May 28, 2022 10:03 PM
Old Magnet
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Reply to d9gdon:
Yes OM, I see the grease zerks are not on the cover but mounted ahead of the cover.

I'm going to pull that cover and see if I can get some penetrant in there...and go from there.

Thanks to you and Daryl.
Unfortunately, under the right weather conditions those compartments can be real rain makers as far as condensation goes.
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Sat, May 28, 2022 11:44 PM
d9gdon
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Reply to Old Magnet:
Unfortunately, under the right weather conditions those compartments can be real rain makers as far as condensation goes.
Well, I get to pull the top cover it looks like...fantastic.

I guess I'll rebuild the clutches while I'm in there and check the bevel gear bearings, they've always been suspect.

But first I'll need to spend 40-50 hours removing the loader assembly.

But I'll need to rebuild this 1586 IH tractor engine before I can make enough room in my shop.
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Sun, May 29, 2022 1:41 AM
Old Magnet
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Reply to d9gdon:
Well, I get to pull the top cover it looks like...fantastic.

I guess I'll rebuild the clutches while I'm in there and check the bevel gear bearings, they've always been suspect.

But first I'll need to spend 40-50 hours removing the loader assembly.

But I'll need to rebuild this 1586 IH tractor engine before I can make enough room in my shop.
Apparently if you strip everything flat you can get the cover out of there without removing the loader.

 
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Sun, May 29, 2022 2:01 AM
d9gdon
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Reply to Old Magnet:
Apparently if you strip everything flat you can get the cover out of there without removing the loader.

 
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Somebody set the bar pretty high, gonna have to study that pic.
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Sun, May 29, 2022 7:42 AM
neil
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Reply to d9gdon:
Somebody set the bar pretty high, gonna have to study that pic.
Hi Daryl, we got the tracks on my buddy's D4 Traxcavator last night and drove it around. We adjusted the left clutch and now it releases very nicely that side. The right side was already working but only just so needs adjusting too. While operating the right clutch lever, we saw this other arm that goes back further from the bell crank and studying the parts catalog (some help) and the serviceman's reference (much more helpful picture), this appears to be a clutch lever booster spring, presumably to reduce the operator effort? It makes a clunking feel/sound when pulling the lever back. What would this be a symptom of? And will it go away when we get the clutch adjusted to spec?
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Sun, Oct 9, 2022 8:20 PM
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