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Thread: Common Machinery Maintenance

  1. #11
    Join Date
    Apr 2007
    Location
    Elkhorn, WI
    Posts
    3,631

    Thumbs up Master Link Pins

    When you need to pull Master Link Pins.
    A trick that seems to work is to remove the cork or broken bolt from the Taper Plug whichever the case maybe(I had both).
    Clean the threads with a bottoming tap.
    Flush with loose juice(I use KROIL).
    Blow it out with air.
    Take your Gas Ax, aim it into the hole of the plug to heat it.
    Squirt loose juice on it to cool it rapidly.
    Use a Socket large enough to sit on the Master Pin.
    Screw a NEW Grade 8 bolt that is long enough to use most of the threads in the hole with a couple of washers into the Plug.
    Turn it out, if it gets tight, hit the wrench with a hammer to help it jar as it turns into the plug.
    Heat around the base of the socket if necessary to expand the Master Pin.

    Heating the plug, then rapidly cooling it, makes it shrink, heating the pin with the bolt tension on it expands the hole diameter of the pin.

    You can feel it pull up tight, then go a little more you will feel the plug give as it moves.
    I had enough washers on to have at least 60% thread engagement.

    This worked for me!

  2. #12
    Join Date
    Aug 2015
    Location
    melbourne
    Posts
    1

    Default

    Quote Originally Posted by jonny@wny View Post
    I have a D4D dozer that the breaks are not working are they in fluid or dry. Vin is D4D 82J3323 I have no idea what I am doing I need help in finding out what is wrong ?
    hello,

    i don't have more experience in this field but i think D2D dozer have fluid in their breaks due to the high pressure and power, i have seen during the maintenance.

  3. #13
    Join Date
    Nov 2018
    Location
    Central indiana
    Posts
    14

    Default

    Quote Originally Posted by jonny@wny View Post
    I have a D4D dozer that the breaks are not working are they in fluid or dry. Vin is D4D 82J3323 I have no idea what I am doing I need help in finding out what is wrong ?
    Jonny they are a dry 3 piece mechanical brake band i just rebuilt a set last summer on the job good news is if you take the top cover and rear covers off and have small hands you can pull them out of the inspection cover. Im sure you took the rear cover off already and made sure the adjusting screw is set correctly and that linkages are working the bands im not looking at a book and its been awhile but i think the adjuster is tighten down light snug and back off 3-4 turns you will want a touch of free play when done. Also there is a slack stud in bottom of brake/steering chamber that has to be adjusted with brakes or removed to get bands out. I relined mine with kit from tractorparts.com around $42 a side if there is fluid in chamber chance is bevil gear seals are out. Also good time to pull out both plugs and wash chambers out with diesel fuel.
    Last edited by Cdcompton; 11-12-2018 at 09:55 PM.

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