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Separating Berco track chains

Separating Berco track chains

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Gregness
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So the D2 went to the doctor for a few things this summer- Good news is the brakes are now adjusted and I have lots of pedal (Yes!) and the electric pony motor starter-generator set up is all dialed in. Bad news was my Cat guy could not get the tracks apart to work on the shot idler bushings. He tried heat, hammers and a hydraulic press but could not get the pin to back out. Any comments or ideas out there?

Greg
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Fri, Sep 29, 2017 11:30 PM
Old Magnet
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Nothing unique about Berco master pin that I'm aware of. More beef and/or higher tonnage hydraulic press required.
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Fri, Sep 29, 2017 11:40 PM
captainhowdy
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Reply to Old Magnet:
Nothing unique about Berco master pin that I'm aware of. More beef and/or higher tonnage hydraulic press required.
get a new pin from Berco then get a gouging rod and burn the center from your old pin. let it cool then drive it out with a hammer. when ur done install new pin.
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Fri, Sep 29, 2017 11:46 PM
ctsnowfighter
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Reply to captainhowdy:
get a new pin from Berco then get a gouging rod and burn the center from your old pin. let it cool then drive it out with a hammer. when ur done install new pin.
Sometimes you can pull the front idler back enough to slip tracks off, have done that on D2, no top carrier rollers on it though.

Suggestion of burning and then driving is one have used many times. often cut an X in pin from both sides, but all we had was Oxy-Acet -- lots of blowback!
Make sure you have a solid backing when driving the pin out, took two of us - one holding a pin with channel locks and one swinging 16 Lb hammer.

Good Luck!
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Sat, Sep 30, 2017 2:03 AM
Rome K/G
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Reply to ctsnowfighter:
Sometimes you can pull the front idler back enough to slip tracks off, have done that on D2, no top carrier rollers on it though.

Suggestion of burning and then driving is one have used many times. often cut an X in pin from both sides, but all we had was Oxy-Acet -- lots of blowback!
Make sure you have a solid backing when driving the pin out, took two of us - one holding a pin with channel locks and one swinging 16 Lb hammer.

Good Luck!
Gregness where are you located?
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Sat, Sep 30, 2017 2:59 AM
Gregness
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Reply to Rome K/G:
Gregness where are you located?


I am in Olympia Washington, machine is on our ranch north of Spokane. Burning out the pin and replacing is the direction we are headed, but if I could save the pin that would be preferable. I don't think my old Cat guy is familiar with Berco, maybe he did not find the master? Hopefully replacement pins will be available and not too dear...

G
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Sat, Sep 30, 2017 3:31 AM
neil
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I just put an order in for some new plugs for my master pins rather than going to the solid pins for my Cat rails. They were easy(ish) to get out once the plug was removed
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Sat, Sep 30, 2017 5:25 AM
Rome K/G
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Reply to Gregness:


I am in Olympia Washington, machine is on our ranch north of Spokane. Burning out the pin and replacing is the direction we are headed, but if I could save the pin that would be preferable. I don't think my old Cat guy is familiar with Berco, maybe he did not find the master? Hopefully replacement pins will be available and not too dear...

G
[quote="Gregness"]I am in Olympia Washington, machine is on our ranch north of Spokane. Burning out the pin and replacing is the direction we are headed, but if I could save the pin that would be preferable. I don't think my old Cat guy is familiar with Berco, maybe he did not find the master? Hopefully replacement pins will be available and not too dear...

G[/quote]

Oh ok, a little too much of a drive for me, lol, I could of pressed it out for ya.
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Sat, Sep 30, 2017 6:33 AM
ccjersey
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16 pound sledge is important.
Good driver setup so your holder is not endangered and you can swing like you mean it.
Put the master on the sprocket and back up to a square block so it has a corner under the grouser below the pin. This holds things securely
Finally, some heat on the rails around the pin.

I don't think a master is any smaller than a regular pin WHERE IT FITS INTO THE RAILS. Thought they were a little smaller the rest of the way through so they would move easier once you get it moved the first little bit. Maybe they are always worn a little (or a lot) where the bushing touches it instead of being made that way.
D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time😄
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Sat, Sep 30, 2017 6:53 AM
catsilver
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Reply to ccjersey:
16 pound sledge is important.
Good driver setup so your holder is not endangered and you can swing like you mean it.
Put the master on the sprocket and back up to a square block so it has a corner under the grouser below the pin. This holds things securely
Finally, some heat on the rails around the pin.

I don't think a master is any smaller than a regular pin WHERE IT FITS INTO THE RAILS. Thought they were a little smaller the rest of the way through so they would move easier once you get it moved the first little bit. Maybe they are always worn a little (or a lot) where the bushing touches it instead of being made that way.
Its OK beating a pin to death but if the links 'spread' it will never come out, it is as important to hold something heavy against the back link like a 20lb sledge as it is to use something like a 14 pounder to drive it out. This is only a little machine so shouldn't take too much but its more important to support the back link than clamp the track down under the sprocket, this only supports the front link.
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Sat, Sep 30, 2017 3:28 PM
ccjersey
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Reply to Old Magnet:
Nothing unique about Berco master pin that I'm aware of. More beef and/or higher tonnage hydraulic press required.
I wonder how effective a jack hammer would be driving pins. I have heard people claim that a small air/impact hammer will easily drive small pins that are very hard with hammer and punch. Maybe the track pins would be the same way.......easier to rattle them out than drive them. Our local rental place used to have a pretty capable electric unit that wasn't too expensive rented for the half day. Sure would be something that most folks could easily access vs hiring someone with a hydraulic press.
D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time😄
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Sat, Sep 30, 2017 6:55 PM
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