.RC.
Senior Member
The cost of the carbide along with it's fragileness puts me off. I did buy two taps as they were half price being new old stock the seller was trying to sell, so the job was finished some days ago.
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My D6D
- Thread starter .RC.
- Start date
The cost of the carbide along with it's fragileness puts me off. I did buy two taps as they were half price being new old stock the seller was trying to sell, so the job was finished some days ago.
LCA078
Senior Member
Yes, carbide isn't for the uninitiated. Takes some experience to use carbide tooling without making more of a mess. But really glad you got the job done.
.RC.
Senior Member
So this is what happens when you blab to others that you managed to get snapped roller bolts out in situ.
They come and drop off their old D6C with the exact identical problem. Admittedly a really nice condition early 60's D6C. But since the operator also ripped the rear guiding guard off the track frame this one is a track frame off job. Plus it comes with a helper who actually is a diesel fitter with real spanners, not cheap chinese ones like I have.
They come and drop off their old D6C with the exact identical problem. Admittedly a really nice condition early 60's D6C. But since the operator also ripped the rear guiding guard off the track frame this one is a track frame off job. Plus it comes with a helper who actually is a diesel fitter with real spanners, not cheap chinese ones like I have.
.RC.
Senior Member
If we go back a year I posted an image of what I had been up to.
Here is a follow up photo. There has been a bit of "fertiliser" spread over the weeds to help the grass.
Here is a follow up photo. There has been a bit of "fertiliser" spread over the weeds to help the grass.
.RC.
Senior Member
Getting a bit sick of this.
Stripped a bolt on the idler block or whatever it is called. Put in one of those threaded inserts.
Stripped a bolt on the idler block or whatever it is called. Put in one of those threaded inserts.
DMiller
Senior Member
Yellow Iron becomes a monster we must feed. Been on that highway, hope your run does better.
That on the d6c or your dozer?
.RC.
Senior Member
This is on my 6.
.RC.
Senior Member
Finally got my act together and pulled off the track frame to replace two of the chain guiding guards. Pretty easy to pull off, crane lifted it easily and got the balance right on the first attempt.
Decided to bring the whole thing home to do it here. Was a good decision as two roller bolts snapped off when removing the roller so I can cut off the guiding guard.
Decided to bring the whole thing home to do it here. Was a good decision as two roller bolts snapped off when removing the roller so I can cut off the guiding guard.
DMiller
Senior Member
You mean Crack 'S' as in Plural!!
LCA078
Senior Member
@.RC. First, good job in getting the frame off. Seems like you're working by yourself so this is quite the accomplishment and worthy of a cold beverage in my opinion.
Second, with the frame in an easy place to work on, yeah, you should touch up your flex joints...
Best of luck with the broken bolts. At least you have experience with those
Second, with the frame in an easy place to work on, yeah, you should touch up your flex joints...
Best of luck with the broken bolts. At least you have experience with those
.RC.
Senior Member
Yes there are a few cracks.
What I really would like are two new track frames.
What I really would like are two new track frames.
Shimmy1
Senior Member
So would about every owner of any C, D, E, F, G, H, and K model Caterpillar dozer still doing production work on the Earth, lol.
LCA078
Senior Member
Good news is those look like stress or fatigue cracks from lots of use as opposed to failure cracks from hard abuse. I'm definitely not the guy to be giving welding advice but it looks like you can add many more hours to your machine with grooving out the cracks and filling with good beads. I'm sure you can even add fish plates or other reinforcing bits/pieces to make it stronger than you'll ever need. But hey, it's easy for me to tell you what to do from half-way around the world
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.RC.
Senior Member
Things are not going as expected. What I thought was just a simple one hour welding job.
Well I removed the rollers so I can weld up the cracked bent spacers (and replace the missing one).
Of course the last person in here was obviously paying for the anti seize and could not afford to put it on all the bolts. Three snapped off. I managed to get one out, the others after a few hours, I just drilled the broken bolt and all out and installed one of those threaded inserts. The front roller bolt holes are ostly knackered as well (the others are in good order). So I might tap them out to 3/4 as I wonder if the first roller takes most of the pounding.
I will put all new genuine roller bolts in. Most of the ones that came out were just generic grade 8 bolts.
Oh and the frame at the idler end, one side was slightly bent. So I straightened that as well.
Well I removed the rollers so I can weld up the cracked bent spacers (and replace the missing one).
Of course the last person in here was obviously paying for the anti seize and could not afford to put it on all the bolts. Three snapped off. I managed to get one out, the others after a few hours, I just drilled the broken bolt and all out and installed one of those threaded inserts. The front roller bolt holes are ostly knackered as well (the others are in good order). So I might tap them out to 3/4 as I wonder if the first roller takes most of the pounding.
I will put all new genuine roller bolts in. Most of the ones that came out were just generic grade 8 bolts.
Oh and the frame at the idler end, one side was slightly bent. So I straightened that as well.
DMiller
Senior Member
Best laid plans, been on this winding road quite a few times RC, literally always something additional. Looking well planned and will be done as well considered.
LCA078
Senior Member
As DMiller said, you're doing as good of a job as possible. Most owners wouldn't take the time or effort to do a thorough job like you're doing.
I'm pretty sure most dozers of this age wished they were owned by an RC.
I'm pretty sure most dozers of this age wished they were owned by an RC.
.RC.
Senior Member
The machine seems to be in a reasonable enough condition mechanical wise to do proper repairs on it.
If it was something one step away from the scrap heap then something just to keep it running would be more appropriate.
Anyhow, I ended up not tapping out the first roller holes to 3/4 inch as the holes were that buggered not even a 3/4 tapping drill would fix them up. So I just put in more 5/8 thread inserts. Another option would have been just to cut that entire top section out and replace it. The plasma cutter makes work like that so easy.
I have been doing other stuff the last few days and I have not yet got it done, but I did just cut out the remnants of that missing spacer and found some 6mm plate and cut and bent up a whole new piece and put it in there.
If it was something one step away from the scrap heap then something just to keep it running would be more appropriate.
Anyhow, I ended up not tapping out the first roller holes to 3/4 inch as the holes were that buggered not even a 3/4 tapping drill would fix them up. So I just put in more 5/8 thread inserts. Another option would have been just to cut that entire top section out and replace it. The plasma cutter makes work like that so easy.
I have been doing other stuff the last few days and I have not yet got it done, but I did just cut out the remnants of that missing spacer and found some 6mm plate and cut and bent up a whole new piece and put it in there.
Attachments
Glum
Active Member
RC, please pack your plasma cutter, mag drill and 5/8 inserts in your suitcase and come visit for a few weeks. I have a few D4 track frames for you to work on and sprocket rims to replace. Will free me up to nurse cows and put up some fence.