RZucker
Senior Member
Could be the equalizer and swing frame bushings are shot too, making the frames splay out when its pushing. That will make the pin bosses ride the rock guards.
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Can someone explain this
- Thread starter StxRancher
- Start date
Could be the equalizer and swing frame bushings are shot too, making the frames splay out when its pushing. That will make the pin bosses ride the rock guards.
StxRancher
Well-Known Member
I did have a ton of play where the c frame connects to dozer, the inside support had come unwelded, which only supported the pin/bushing on one side, instead of both..causing blade to have excessive play and pivot
In order for track rollers to cause wear like that I would have to assume the flanges would be completely gone, since the pin bosses are not worn from hitting the edge of the flange... Doesn't seem likely to me, but pictures will tell the tale.
Scrub Puller
Senior Member
Yair. . .
Things just don't add up to me . . . this could be an interesting can of worms.
Cheers.
Things just don't add up to me . . . this could be an interesting can of worms.
Cheers.
Former Wrench
Senior Member
As worn as these are it seems that there has to be something that is just as worn somewhere that is rubbing. Maybe burying the blade to get weight off the tracks will show the cause.
StxRancher
Well-Known Member
That's not the news I wanted to hear 
StxRancher
Well-Known Member
What flanges are you referring to
Scrub Puller
Senior Member
Yair . . .
Bloody hell this isn't rocket science.
If the O/P lets the grease out of the adjusters, pulls the idlers back and jacks the tractor up on blade and rippers it would be as obvious as dogs balls.
No rippers? Well back the sprocket onto an eighteen inch log or baulk and lift the front up on the blade and have a look at the flanges on the rollers . . . perhaps some bodgie or bent rock guards have been fitted or welded on crooked or some such, it will be easy enough to see.
Cheers.
Bloody hell this isn't rocket science.
If the O/P lets the grease out of the adjusters, pulls the idlers back and jacks the tractor up on blade and rippers it would be as obvious as dogs balls.
No rippers? Well back the sprocket onto an eighteen inch log or baulk and lift the front up on the blade and have a look at the flanges on the rollers . . . perhaps some bodgie or bent rock guards have been fitted or welded on crooked or some such, it will be easy enough to see.
Cheers.
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Flanges are the outer parts of the roller on this single flange roller. Double flange rollers have another set in the middle, the links ride between the flanges.
I have never seen any case where the flanges were gone, unless something was very wrong with the track frame or idler alignment. Rollers usually wear where the links ride, making the center smaller over time and the pin bosses begin to hit the flanges. You never know though what a machine has been up to, so it's always possible you have a roller or two gone South, but both sides at the same time?
Maybe the chains are running half off at the front or rear, got a link down in the center? Seen it happen if things are worn enough... that idler looks like it's out to the bitter end of adjustment so..... Usually obvious though.
As Nige sez, more pictures please!
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RZucker
Senior Member
Both tracks are doing this, I'm betting it's got rails from another brand of machine that was a "close" fit and they are just too wide across the pins. Look at the overhang on the idler and roller.
You know it's hard to tell from the pictures but my first thought was that the links looked way big for a 450.
8k bill
Well-Known Member
:beatsmeLooks like someone's builtup the leadin plates and used too thicker material
JS300
Senior Member
I'm with Scrub jack the dozer up and find what is loose or what is rubbing. I had the same rub on my chains (not near as bad though) we kept running it because there was no noise. Well it starting sqeeking and we found the problem yesterday. Bad front idler and bad front roller on LH side of machine. I think the idler took the roller out. Chain was rubbing on the rock guards because the idler was loose and let the track adjuster kick over a little.
I'd jack it up loosen the track and go over everything with a little pry bar.
I'd jack it up loosen the track and go over everything with a little pry bar.
DPete
Senior Member
I've had rubbing like that in days gone by, my cause was a combination of snaky tracks and roller flanges worn thin letting the rail rub the rock guards. I just ran it until undercarriage time
StxRancher
Well-Known Member
I do have a broken idler on the right side, do you think it would cause issues on both sides?
StxRancher
Well-Known Member
Another view opposite side
redneckracin
Senior Member
Your idlers don't match wear wise side to side for one. The broken idler is def causing that side chain to be rubbing. Start looking for undercarriage parts.
StxRancher
Well-Known Member
Can't I repair broken idler by welding it?
Former Wrench
Senior Member
My instincts tell me that the more you look at this one, the more you will find that is used up. I am thinking a complete undercarriage rebuild is in the near future and I would bet you will find cracks that need welding and broken guard bolts.
redneckracin
Senior Member
x2 I'd check all the mounting hardware from the track frame to the cross bars to the main frame. Those rock guards will unbolt with some muscle and you can inspect things alot better. Good luck!