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955C Flip Bushings and Pins

955C Flip Bushings and Pins

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ShawnP
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Good after guys,

I have a CAT 955C that has run out room for adjustment to tighten to the tracks. I've been doing some research and I read that if done right, you can rotate remove pins and turn the bushings 180 degrees to increase track life. If I brought it in to a local heavy equipment shop, what could I expect for a reasonable price to have this done? Thanks
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Wed, Apr 19, 2017 3:52 AM
d9gdon
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Shawn, a lot of places are charging nearly as much as what you can buy a new set of rails for on the smaller size tractors. That should be the D4 size undercarriage on the 955C where the 955E was on the D6 size. I don't remember the S/N cutoff.
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Wed, Apr 19, 2017 4:46 AM
Old Magnet
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Reply to d9gdon:
Shawn, a lot of places are charging nearly as much as what you can buy a new set of rails for on the smaller size tractors. That should be the D4 size undercarriage on the 955C where the 955E was on the D6 size. I don't remember the S/N cutoff.
Depends on what you have to work with. Pins & bushings should be rotated when stretched chain length is 80-85% worn. They are too far gone if your over say 110% worn. Also you need to have at least 50% of the link height allowable wear left to make it worth while. Even then the turn cost may approach replacement cost and unless the turn cost is 50% of new it's probably not worth while. There's always the remove a link option and run to destruction.
If you go the new chain route you really need to look at replacing the rest of the wear components as well otherwise a new chain may be short lived.
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Wed, Apr 19, 2017 5:13 AM
ShawnP
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Reply to d9gdon:
Shawn, a lot of places are charging nearly as much as what you can buy a new set of rails for on the smaller size tractors. That should be the D4 size undercarriage on the 955C where the 955E was on the D6 size. I don't remember the S/N cutoff.
Sounds like I may just simply want to take a pad off and tighten it up that way. I'm guessing at this point I'm just using it until it stops working. Out of curiosity, if I do take a pad off to Tighten the track how long could I expect her to limp along (assuming decently worn sprocket and machine in general)? 50-100 hours?
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Wed, Apr 19, 2017 5:17 AM
Old Magnet
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Reply to ShawnP:
Sounds like I may just simply want to take a pad off and tighten it up that way. I'm guessing at this point I'm just using it until it stops working. Out of curiosity, if I do take a pad off to Tighten the track how long could I expect her to limp along (assuming decently worn sprocket and machine in general)? 50-100 hours?
Got no way of telling without measurements. It would have to be pretty bad to only last 100 hrs.
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Wed, Apr 19, 2017 5:25 AM
ShawnP
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Reply to Old Magnet:
Got no way of telling without measurements. It would have to be pretty bad to only last 100 hrs.
OM ,
what measurements will give me the best idea of how much track percentage I have left on the 955? Are we talking about the bushing diameter or measure from center to center of 5 pins?
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Wed, Apr 19, 2017 5:49 AM
Old Magnet
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Reply to ShawnP:
OM ,
what measurements will give me the best idea of how much track percentage I have left on the 955? Are we talking about the bushing diameter or measure from center to center of 5 pins?
A combination of the 5-pin dimensions, rail height, a picture of the sprockets and position of front idlers would give a pretty good indication.
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Wed, Apr 19, 2017 7:33 AM
Paso Bob
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Reply to Old Magnet:
A combination of the 5-pin dimensions, rail height, a picture of the sprockets and position of front idlers would give a pretty good indication.
I have a 3T D-7 dozer that has had worn out tracks for 20 years. I have put 15 to 30 hours per year on it for those past 20 years. It still has some time left. I going to swap the dozer components out to a 17A as a summer project and scrap the 3T out. I has a strong low time engine in it though...
D-4 7U-43159 with 4S dozer and Cat 40 scraper, D-7 3T-1179 with Cat 7S hydraulic dozer, D-7 17A 13,944, D-8 14A-1160 with Cat 8S cable dozer, Cat 12-99E-4433 Grader. All runners and users.
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Wed, Apr 19, 2017 10:24 AM
BobPV15
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Reply to Old Magnet:
A combination of the 5-pin dimensions, rail height, a picture of the sprockets and position of front idlers would give a pretty good indication.
The down side to taking a link out and running to destruction, is the out of pitch track will wear out the sprockets must faster. This may be OK if the machine is toast when the tracks are done but if you do plan on putting new rails on it in the future, it may be best to do it now if your sprockets are still in good shape.
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Wed, Apr 19, 2017 10:25 AM
TOGNOT
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Reply to BobPV15:
The down side to taking a link out and running to destruction, is the out of pitch track will wear out the sprockets must faster. This may be OK if the machine is toast when the tracks are done but if you do plan on putting new rails on it in the future, it may be best to do it now if your sprockets are still in good shape.
A fellow ACMOC member we all know paid about $2500 to have pins turned on a D8 - and he delivered the reactor to the shop.
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Wed, Apr 19, 2017 11:38 AM
catsilver
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Reply to TOGNOT:
A fellow ACMOC member we all know paid about $2500 to have pins turned on a D8 - and he delivered the reactor to the shop.
Before the decision to not turn bushes and run the track to destruction, you must factor in the cost of shorter sprocket life as well because over stretched tracks will ruin them--very quickly. The cost of new chains against the cost of a bush turn are not the only factors in your overall undercarriage cost equation.
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Wed, Apr 19, 2017 4:07 PM
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