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Thread: Couple of D6 8U questions-parts interchangeability, steering clutch removal difficult

  1. #1
    Join Date
    Aug 2018
    Location
    Southington, CT
    Posts
    30

    Default Couple of D6 8U questions-parts interchangeability, steering clutch removal difficult

    Nearing on 2 years ago a friend and I bought a 1956 8U with a 9U undercarriage. My first dozer, his ??? of many and 4th D6. It has electric start, engine and hydraulics ran good, a snappy clutch, and bolt-on sprockets. We had it shipped up to my family's property where it's been sitting as life put it on the back burner. Now, I believe this fall we'll be starting to get around to it.

    First major issue is the rusted stuck RH steering clutch. It's been determined it needs to come out. Rotten wood canopy, seat and tank have been removed. We started to try to unbolt it but it's proven so rusty it took an hour to torch and wrench one bolt out. Besides the usual penetrants and heat are there any tips to getting these out?

    Second question is another rusty part question. The PO was a horse farm along a river and they never took the track adjuster guards off to shovel the silt out. Now they are completely rusted and some parts started to rot away. If I want to modernize this are any of the later series D5 or D6 hydraulic track adjusters interchangable onto this? Would be nicer than turning a wrench but if not I'll make do.

    Last (for now), has anyone fabricated a sturdy canopy for a 8/9U? Although I'm good with woodworking I don't care much for the factory canopy that came with it. I'd like to see pics of your creations.

    This has been a cool site to peruse so far. Thanks in advance for the info.

    IMG_20190701_215143.jpg

  2. #2
    Join Date
    Jan 2007
    Location
    long island NY, Hancock Ma
    Posts
    2,313

    Default

    I fabricated this canopy roof using the existing 4 posts that were on the D4 7U

    D4-941B 001.jpgD4 canopy on 005.jpg
    Cat 941B, Cat D2 4U, Cat D3B, Cat D4 7U, Cat D6 9U

  3. #3
    Join Date
    Nov 2006
    Location
    oregon
    Posts
    281

    Default

    I will trade you track adjusters for your canopy if your interested? I am in Oregon so we would have to freight. the later 9U's did have hydraulic adjusters. mine I can trade are not hydraulic but manual.

  4. #4
    Join Date
    Nov 2017
    Posts
    416

    Default

    probably can find oem adjusters from a salvage yard and if not then Henderon hydrajusters would work.
    D4 6U,1943 D4 2T,Laplant Choate C41 Carrimor Scraper

  5. #5
    Join Date
    Jan 2007
    Location
    long island NY, Hancock Ma
    Posts
    2,313

    Default

    I have a set of track adjusters on my 9U parts machine

    D6 001.jpg
    Cat 941B, Cat D2 4U, Cat D3B, Cat D4 7U, Cat D6 9U

  6. #6
    Join Date
    Aug 2018
    Location
    Southington, CT
    Posts
    30

    Default

    Thanks for the suggestions. I'll have to price out the Hendersons. dpendzic, I have a feeling I'll be taking a ride up to see your adjusters in the future. u-joint, thanks for the offer, but I think freight is gonna be killer either way. You're probably better off finding some closer or fabbing a set.

  7. #7
    Join Date
    Feb 2007
    Location
    Ste-Julie
    Posts
    1,009

    Default D6

    Quote Originally Posted by acprimus View Post
    Nearing on 2 years ago a friend and I bought a 1956 8U with a 9U undercarriage. My first dozer, his ??? of many and 4th D6. It has electric start, engine and hydraulics ran good, a snappy clutch, and bolt-on sprockets. We had it shipped up to my family's property where it's been sitting as life put it on the back burner. Now, I believe this fall we'll be starting to get around to it.

    First major issue is the rusted stuck RH steering clutch. It's been determined it needs to come out. Rotten wood canopy, seat and tank have been removed. We started to try to unbolt it but it's proven so rusty it took an hour to torch and wrench one bolt out. Besides the usual penetrants and heat are there any tips to getting these out?

    Second question is another rusty part question. The PO was a horse farm along a river and they never took the track adjuster guards off to shovel the silt out. Now they are completely rusted and some parts started to rot away. If I want to modernize this are any of the later series D5 or D6 hydraulic track adjusters interchangable onto this? Would be nicer than turning a wrench but if not I'll make do.

    Last (for now), has anyone fabricated a sturdy canopy for a 8/9U? Although I'm good with woodworking I don't care much for the factory canopy that came with it. I'd like to see pics of your creations.

    This has been a cool site to peruse so far. Thanks in advance for the info.

    IMG_20190701_215143.jpg
    About the stering cluch the outside bolts are removed by the small cover rear sprocket with 3/4 drive ratchet and inside you need to depli the plate lock and a 3/4 cloose kee on the ead bolt and a other cloose kee on the first kee and you need to removed 1 bolt left side and 1 bolt right side and am't sure the hydrolic jack should't fitt in the spring standar adjustenent.

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