lake side bob
Senior Member
Cat 120 excavator project.
Heated up the track rail and pounded out the pin that joins the track rails together.
Then replaced the idler.
Now need to reassemble the track rail.
I plan on using dry ice to shrink the pin and hopefully place it inside the track rail with out hitting it with sledge hammer.
Never used dry ice before.
Question #1: How long to I need to have the around 1.125 inch thick pin in the dry ice to shrink it?
Question #2: Do I need to heat up the track rail links, before placing the shrunk by dry iced pin into the chain rail openings?
Question #3: Just how straight do the holes of the two chain rail sections have to line up, I got them pretty close have not been able to get them right on straight and I did grind off the edge of one side of the pin to help it go into the openings.
Question #4: If I have to, can I pound on the frozen pin to pound it into the chain rail sections, I would not think the pin would break.
What could go wrong?
Thank you for your replies, much appreciated, this is a wonderful site for information.
Heated up the track rail and pounded out the pin that joins the track rails together.
Then replaced the idler.
Now need to reassemble the track rail.
I plan on using dry ice to shrink the pin and hopefully place it inside the track rail with out hitting it with sledge hammer.
Never used dry ice before.
Question #1: How long to I need to have the around 1.125 inch thick pin in the dry ice to shrink it?
Question #2: Do I need to heat up the track rail links, before placing the shrunk by dry iced pin into the chain rail openings?
Question #3: Just how straight do the holes of the two chain rail sections have to line up, I got them pretty close have not been able to get them right on straight and I did grind off the edge of one side of the pin to help it go into the openings.
Question #4: If I have to, can I pound on the frozen pin to pound it into the chain rail sections, I would not think the pin would break.
What could go wrong?
Thank you for your replies, much appreciated, this is a wonderful site for information.