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Thread: Got tired of beating on master link today d7e

  1. #1
    Join Date
    Nov 2018
    Location
    Central indiana
    Posts
    56

    Wacko Got tired of beating on master link today d7e

    Wanted to share for others to see. I used oil, i used very little heat being careful not to temper the master link, i used the biggest hammer i had until i couldnt swing no more lol. So just for a plan b or idea for others, figured i would share my success. And i know im not the first one to build a home made track press but here is mine with a 50 ton bottle jack that got a very stubborn pin out....
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  2. #2
    Join Date
    Mar 2015
    Location
    north idaho
    Posts
    589

    Default

    That looks good, I've often thought there should be a good garage type method for pushing out pins.
    Did the 50 ton Jack struggle or push it right out? Seems like I've read the hydraulic pin presses are 100 tons. Either way you got it out . Might be one in my future, thanks

  3. #3
    Join Date
    Nov 2018
    Location
    Central indiana
    Posts
    56

    Default

    D2gary beating all day pin moved 1/16 usually once they move your home free not this one i put the jack on it and it pumped up and jumped 1 time a good 1/4 then stopped so i pumped it up again and smacked the bottom of the jig under bottle jack with a sledge and it shot out with 1 hit. The pin had also been welded on both sides and had to remove weld with a cone shaped carbide bur bit on the die grinder. But overall i think when i have another one to do the time spent making this was worth it. Not sure i would have gotten this one with just a sledge like normal

  4. #4
    Join Date
    Mar 2009
    Location
    yuba city,california
    Posts
    1,292

    Yuck

    Iím lucky to have ďGatorĒ master links on my D7s! Sledge-O-Matic isnít much fun on any pin. JM

  5. #5
    Join Date
    Jan 2017
    Posts
    404

    Default Master Pin Jig

    Very nice looking jig, only thing I could add to it would be a ring on the pushing pin to keep it centered on the jack ram. Do all you can to avoid exposure - hide yourself from possible failures.

    I sympathize with those fighting master pins - remember a D7E and frozen pin - 16# double jack, and cutting torch, all day affair in 100 F weather, no shade! Two of us earned our pay that day!

    I operated a fixed track press in a Cat shop - had a cylinder explode! 8" cylinder coming apart is not something you want to experience. (No, the packing did not fail - the cylinder walls came apart!) Same thing happened some time later on same side of press, both of us were extremely lucky we were not hurt!

    Pushing pins, master or otherwise can be very dangerous, use all cautions possible!

    CTS

  6. #6
    Join Date
    Nov 2006
    Location
    Pittsford NY
    Posts
    4,497

    Default

    That's why I like the split master pins on the D2 because once the plugs are out, they virtually push out by hand. I realize D2s are small potatoes but the current master pins are just those solid pins and they do not move easily like the split pins do
    Cheers,
    Neil.

  7. #7
    Join Date
    Aug 2014
    Location
    Iowa
    Posts
    4

    Default

    Not having the proper tools, nor skill, nor torch, but access to electricity, I used a Sawzall to cut my master pin and split the track on my old 17A. I cut the first side with one blade and about 10 minutes of sawing, thought I was pretty clever. For some reason, second cut took about 8 blades and about 75 minutes, but got it cut. There are always several ways to skin a cat.
    Kelly D717A

  8. #8
    Join Date
    Apr 2007
    Location
    Elkhorn, WI
    Posts
    3,787

    Thumbs up

    I like the Press!
    Resourcefulness usually does not fail in getting a seemingly impossible task done!
    Now can you "press" it back in with the same rig?

  9. #9
    Join Date
    Apr 2014
    Location
    SW MN
    Posts
    83

    Default

    Exothermic torch = done
    New pin and dry ice $30

  10. #10
    Join Date
    Nov 2007
    Location
    NW Ohio
    Posts
    3,405

    Default

    "One stick of dynamite....free"
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