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M Crawler master pin removal
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GreenOrange View Drop Down
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Joined: 11 Sep 2009
Location: Wisconsin
Points: 831 		Post Options Post Options   Thanks (0) Thanks(0)   Quote GreenOrange Quote  Post ReplyReply Direct Link To This Post Topic: M Crawler master pin removal
    Posted: 12 Nov 2020 at 3:26pm
I'm going to be needing to split the tracks on my M crawler... any advice on getting the master pins out?  I read a little online and know they make pushers, but that's definitely out of my price range.  Some say cut it and replace it with a new one... I'm not sure I can even get a new one for the M and assume it's exceptionally hard steel.

Any thoughts and advice would be greatly appreciated before I attempt to tackle this one!
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DiyDave View Drop Down
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Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 51744 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 12 Nov 2020 at 5:35pm
Aside from the search for a 20-30 year old, willing and able to use a 12-20 lb sledge hammer, for several hours, I don't see much of a problem...Wink
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GreenOrange View Drop Down
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Joined: 11 Sep 2009
Location: Wisconsin
Points: 831 		Post Options Post Options   Thanks (0) Thanks(0)   Quote GreenOrange Quote  Post ReplyReply Direct Link To This Post Posted: 14 Nov 2020 at 8:23pm
So, is it even worth attempting or just look to hire someone with a pin press?
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Coke-in-MN View Drop Down
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Joined: 12 Sep 2009
Location: Afton MN
Points: 41614 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 15 Nov 2020 at 11:44am
Buck the back side of the track with blocking to other side of machine to prevent movement . I welded a guide onto track pad to hold a steel rod to use as a punch to drive against master pin - that steel rod has a handle welded onto it for helper to steady the rod while I swung sledge to drive out pin . Using some heat on both sides of track link to expand link and to help free pin . 
Once movement was obtained - soaking it with penetrating oil helped in keeping it moving . Bucking the track is important as otherwise rebound from the blows will just be absorbed by track moving when pin is hit . Using a pipe allows the pin to move into pipe while still being held securely
   
Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 31155 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 15 Nov 2020 at 3:51pm
IF know someone with track service tools the money spent is well worth it as to Bodily strains and pains as well the side load stresses placed on the links beating them with a sledge.
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GreenOrange View Drop Down
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Joined: 11 Sep 2009
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Points: 831 		Post Options Post Options   Thanks (0) Thanks(0)   Quote GreenOrange Quote  Post ReplyReply Direct Link To This Post Posted: 18 Nov 2020 at 8:45pm
Thanks for the advice gentlemen!
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 8247 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 23 Nov 2020 at 9:12am
Finding the guy who knows how to properly use his track tools is the next problem. I take my semi tractor to a shop for spring bushing replacement. They have the tools but aren't much good at using them. I have to shepherd the mechanic through the process. Bout ready to buy my own tooling.
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LeonR2013 View Drop Down
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Joined: 01 Jan 2013
Location: Fulton, Mo
Points: 3500 		Post Options Post Options   Thanks (0) Thanks(0)   Quote LeonR2013 Quote  Post ReplyReply Direct Link To This Post Posted: 01 Dec 2020 at 2:50am
Getting a 20# hammer should be the first order of business. Getting the chain red hot is not the best thing to do. It can soften the chain which can lead to breakage. But sometime you have to do what you have to do.     Leon
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Coke-in-MN View Drop Down
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Joined: 12 Sep 2009
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Points: 41614 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 09 Dec 2020 at 10:08am
I used a #12 sledge  - heated track links well below red - say 400 F Deg  and as soon as pin started moving soaked area with penetration oil - going back in i used STP on pin 
Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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