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Yanmar 2820 D

Discussion in 'Lounge' started by laserjock, Apr 5, 2020.

  1. laserjock

    laserjock Almost there... Supporting Member

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    So a couple weeks ago, I took the truck and trailer over to pick up my buddy @tadd ‘s tractor. He’s had it for several years. We actually hauled it home on an IDI. He mowed grass for a while with it then it overheated and one thing led to another and he ended up with too much water and not enough antifreeze which lead to what we thought was a cracked head. He parked it for several years and fast forward to a couple weeks ago. He ordered a reman head and we brought it to the garage to swap the head and put a new radiator in. Well turns out as we tore it down we realized the head was fine. It was actually the thermostat housing.

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    Yep. Toast.

    In the mean time, we discovered a horrendous fuel leak. Thought it was the return fuel line leaking. No such luck.

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    That would be a large rust hole circled.

    Tanks are not available. As it turns out, that thermostat housing is also not available. So into parts finding hell we go.
     
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  2. laserjock

    laserjock Almost there... Supporting Member

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    To sort the fuel tank situation, we ordered up a 5 gal fuel cell from amazon. It’s a little small but we couldn’t find anything to fit the hole we have here without massive modification.

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    It’s pretty well form fitted in there. So here we go. The fuel cell had -10 outlets and ports on the top. It’s really hard to go from -10 to 1/4 fuel hose but it turns out the hole in the 10 AN fitting is right at 7/16” which happens to be the tap drill size for 1/4 npt.

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    With some help from a CAD model...


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    I bent, drilled and tapped the brackets and welded them in.

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    Gave it a quick clean with a wire wheel and a lick of paint and it’s ready to assemble with some fresh fuel hose.

    Cont.
     
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  3. laserjock

    laserjock Almost there... Supporting Member

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    [​IMG]

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    Massey Fergusson Red. Good enough.

    I also fixed the throttle lever too. It broke off because the linkage had frozen.

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    I tacked one side, then cut from the other side over half way through and welded it up. Then gave it a quick blast and a shot of paint.
     
  4. sjwelds

    sjwelds Full Access Member

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    Could the thermostat housing be welded?
     
  5. laserjock

    laserjock Almost there... Supporting Member

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    It’s really busted up. We considered it but it turns out there is a water pump upgrade kit for a similar engine that includes a front cover without the water neck. I’ll show pictures later but long story short, you pull out the thermostat bypass and screw in a rad hose adapter. You loose the thermostat and it causes one other problem. The original water pump pulley now doesn’t line up.
     
  6. hesutton

    hesutton The Anti-Anderson Supporting Member

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    Looks like a nice project Mike. Sucks having to fight with parts that aren't correct, but you're doing a proper redneck retrofit buddy. Love it!

    Heath
     
  7. laserjock

    laserjock Almost there... Supporting Member

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    Tank is in. Lines connected.

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    Fuel return system is being overhauled.

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    Haven’t done the injector return lines yet. Pretty much ready for fuel. Just need to get the cooling system sorted.
     
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  8. Shadetreemechanic

    Shadetreemechanic Full Access Member

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    Have you checked with John Deere on the thermostat housing? I think that is the same motor thats in the 850 or 950 JD.
     
  9. laserjock

    laserjock Almost there... Supporting Member

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    That wouldn’t shock me. I know the head has been changed at some point because it’s JD green.
     
  10. lotzagoodstuff

    lotzagoodstuff Supporting Member Supporting Member

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    Very nice work ;Sweet
     
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  11. laserjock

    laserjock Almost there... Supporting Member

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    Well things were going along swimmingly. Got the belt drive happy.

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    Made the spacer to make things come out right. Also made a serious adjustment to the alternator bracket with my 12” crescent wrench. Put fuel in it and no leaks. Got it running long enough to check the belt. Good.

    Got the rad in. Hoses modified to fit.

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    Everything was great until we started putting water in it.

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    Damn. Yes. Yes that is a crack in the block.

    Time to take a break and weigh options.

    Stay tuned.
     
  12. Shadetreemechanic

    Shadetreemechanic Full Access Member

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    That sucks.
     
  13. no mufflers

    no mufflers Supporting Member Supporting Member

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    could be welded if you find it worth the effort.
     
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  14. laserjock

    laserjock Almost there... Supporting Member

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    Anybody ever try these?


     
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  15. no mufflers

    no mufflers Supporting Member Supporting Member

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    thats interesting. i know the good ole cummins 53 block makes a crack on its own in the coolant area. seem to remember reading something like this repair being done.
     
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