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Should I take on this project? 50s Cat D4

Discussion in 'Dozers' started by Lumberjack Matt, May 15, 2021.

  1. Don Shilling

    Don Shilling Well-Known Member

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    Occupation:
    Retired, multi occupation
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    Texarkana, Texas
    At least you are in a positive frame of mind. Not counting my D21, most of my used equipment have been "learning experiences" to get running again! My current project is an 8N Ford that I should have spent my money on a good running one. But, I'll know just what condition its in when I get it finished.
     
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  2. Sam1734

    Sam1734 Well-Known Member

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    Alabama
    Not trying to rob a post here, but I have a 801 power master with the 177 ci engine that is basicly similar to the 8N and I have issues with that thing too. It is my nemesis. It has literally turned me against gas burners for farm/heavy equipment.
     
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  3. Bluox

    Bluox Senior Member

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    WA state
    Since your this far in take the top plate of the clutch housing and see what kind of disaster is going on in there .
    Also check hyd . pump is not froze up.
    Bob
     
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  4. Lumberjack Matt

    Lumberjack Matt Well-Known Member

    Joined:
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    Location:
    Oregon
    Drained and removed the hydraulic pump (thing is way heavier than it looks), no water in the fluid, and the valves appear to be good. Some grit came out, but doesn't look as bad as I thought it would be. Here are the leftovers from the bottom of the tank.
    PXL_20210630_035119906.jpg

    Drained the clutch and flywheel compartments. Most concerning stuff was in there. Not much water, a lot of sludge, and some metal pieces. They look like gear teeth, but too small to be flywheel teeth. Since I'm pulling the engine, I'll get a better look at this later.

    Transmission fluid looked good. Clearly had a little water mixed in, but I've seen way worse. No grit or gear teeth in the bottom. Big relief.

    Steering clutch compartment full of water and oil. At this point it's clear I'll have to replace the steering clutches... was already kind of planning on this though because of how the levers feel when I pull them.

    Final drive oil was pristine.

    I filmed all the drainings here. Skip to 13:06 to see the deluge of water from the steering clutch compartment.


    Next up is pulling the radiator and injection pump. I've only snapped one bolt so far...I know it sounds silly, but this is my #1 gauge of how bad a project is. There's nothing that slows down progress more than a snapped bolt.

    Not sure if I should keep posting in here, don't want to keep bumping this thread and spamming the forum and annoying everyone. Let me know if I should stop, otherwise I'll keep posting updates.
     
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  5. Welder Dave

    Welder Dave Senior Member

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    Keep posting your progress, everybody likes to see old iron come back to life.
     
  6. Sam1734

    Sam1734 Well-Known Member

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    Absolutely agree!!!
     
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  7. Don Shilling

    Don Shilling Well-Known Member

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    This is extremely interesting! It lets people know what to expect with old machinery. AND, lots of pics!
     
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  8. Shivan Dookeran

    Shivan Dookeran Active Member

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    Location:
    Trinidad ,west indies
    love the dedication u puttimng on .. keep up the work bro
     
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  9. Lumberjack Matt

    Lumberjack Matt Well-Known Member

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    Oregon
    Got the radiator and injection pump removed. Also opened up another inspection cover on the crankcase. It just seems that there is this grit/gravel all throughout the engine. It has the consistency of something you would see at the bottom of a creek bed.

    Here is the output of the filter tower to the fuel rack (I believe this should be filtered fuel). The o-ring here was completely cracked in half, so that's probably the source of all the diesel in the crank case:
    PXL_20210707_003132714.MP.jpg

    The fuel rack itself looks like it's in good condition:
    PXL_20210707_003025006.jpg

    Here is the inside of the inspection cove. Rods completely covered in very loose scale. Scale also sprinkled all over everything:
    PXL_20210707_002808278.jpg PXL_20210707_002820391.jpg

    It's very odd. Nothing is seized or corroded through, but everything has this rust/grit completely coating it. I feel pretty confident that I can get this engine running. It will just require a complete disassembly and cleaning.
     
  10. FarmWrench

    FarmWrench Well-Known Member

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    Occupation:
    Table Potato farmer
    Location:
    Chaffee NY
    Keep posting. I'm considering going down the same road with a D4d.
     
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  11. Lumberjack Matt

    Lumberjack Matt Well-Known Member

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    Will do! Also trying to record most of it and putting it on youtube (mostly so I remember how everything goes back together).
     
  12. Lumberjack Matt

    Lumberjack Matt Well-Known Member

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    Pretty sure I have everything detached and all the geometries right to pull the engine without breaking anything. I'll find out tomorrow!
    PXL_20210712_024004748.MP.jpg PXL_20210712_023728167.jpg PXL_20210712_023653772.jpg
     
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  13. Puffie40

    Puffie40 Well-Known Member

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    Southeastern B.C.
    That grit is 'rust blooms' - Those tend to appear on iron in very humid environments. Given the oil pan was full of water, that is perfect conditions for creating a sauna. A wire brush will knock them down, and once you get the motor running, the oil will prevent the rust from continuing.

    It's a good call to tear down the motor. Those rust blooms would accelerate the wear inside the engine.

    Not sure what the teeth you found in clutch housing might be from. The steering clutches have small teeth on the plates, but I don't know if the main clutch had any teeth aside from the splines on the input shaft.
     
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  14. Lumberjack Matt

    Lumberjack Matt Well-Known Member

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    Got the engine out and oil pan off. Actually looks better than I was expecting.
    PXL_20210717_034850124.jpg

    Lot of surface rust on the rods and crank, but bottom end of the cylinders are pristine (ignore my finger print smudges).
    PXL_20210717_034958679.PORTRAIT.jpg

    If I had to guess, the hangup with it fully rotating is the camshaft. That thing is rough.

    PXL_20210717_035012937.PORTRAIT.jpg
    PXL_20210717_035022396.PORTRAIT.jpg
     
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  15. Lumberjack Matt

    Lumberjack Matt Well-Known Member

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    Here is the inside of the oil pan, in case anyone wants some chocolate pudding.
    PXL_20210717_034838914.jpg
     
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  16. catman13

    catman13 Senior Member

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    oregon usa
    that cam shaft is toast
     
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  17. DMiller

    DMiller Senior Member

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    Yeah no polishing that one.
     
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  18. Lumberjack Matt

    Lumberjack Matt Well-Known Member

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    Yeah I've already started looking into finding a new one. I'm gonna dip it into some evaporust just to see how bad it is. Hoping to get it out tonight.
     
    Last edited: Jul 17, 2021
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  19. Don Shilling

    Don Shilling Well-Known Member

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    Camshafts can be reground. Might be worth looking into.
     
  20. Lumberjack Matt

    Lumberjack Matt Well-Known Member

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    Oregon
    Cam gear won't be winning any beauty pageants either.

    Whoever invented evapo-rust, I'm about to put his kids through college.
    PXL_20210718_034235848.jpg
     
    Last edited: Jul 18, 2021
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