Section for komatsu d20,21 and similar grey market dozers

[darinray]

Sure thing. My contact info is www.dmmsales.com

Darin
dmm@inbox.as
716-397-5963 cell

[Racenitro]

Digger..
Thanks for reponding. It leaks constantly...Oil level does drop..added some but it would not steer. leak is pretty strong.
I am assuming you are talking about the level on the dipstick on the floor in front of the operator seat.

[Digger145]

Originally Posted by Racenitro

It leaks constantly...Oil level does drop..added some but it would not steer. leak is pretty strong.

You should be able to see a wash mark (clean spot washed by oil leak) somewhere if the leak is bad enough then. I would be sus to a hydraulic line rubbed through - be it steel or flex. If it leaks quick it's on the pressure side and slower on the return - nothing you don't know already, but it allows you to trace it from the pump.

I am assuming you are talking about the level on the dipstick on the floor in front of the operator seat.

I kinda only mentioned it, cuz you said you were thinking of buying it. Make sure it hasn't been run whilst dry. You could get all sorts of problems in the future if it has. A leak, even a bad one isn't so bad as long as it's well fed.

It could be a bargain - just a broken line mount which has caused the line to rub through or it could be big $$$. Think with your head not your heart, as another one ( a better one?) will always be around the corner.

[Racenitro]

Digger...
Thanks....
The price of the Dozer was so good, that I went ahead and bought it....
It is from a farm estate sale and the owners wanted to sell it bad so $5000 got it.
I figure the engine and scrap are worth that much and if I can fix it chepaly, all the better.

It is a 1977 model....
Already have had an offer for more than I paid for it as it sits, so I figure I did not make a mistake...

Hauling is not a problem since my cousin one farm away has a low boy that he hauls his excavator with. Just had to situate the trailer square so it loaded and since I already remove the blade and trunions, and hauled them separately, width was not an issue either.
Just need to find a little extra time to work on it now.....

[Digger145]

Originally Posted by Racenitro

Digger...
The price of the Dozer was so good, that I went ahead and bought it....
It is from a farm estate sale and the owners wanted to sell it bad so $5000 got it.

Wow, that's a bargain IMHO. Let us know how you get on with it. :

[Racenitro]

Talked to a guy today that used to work for a heavy equipment salvage yard and he sid there is a rubber hose approx 2 inches in dia that is probably worn through that pickes up oil from the trans case and feeds the steering pump
If that is the problem, it should show itself as soon as I remove the belly pan.

The price made it hard to pass up especially when a good running Cummins NH220 take out goes around $3000...that would leave a lot of scrap f nothing else that easily covers the other $2
I am told the blade(tilt) will also fit a D-6

[rinehart89]

anyone no what fluid you use in the d20 transmision

[darinray]

According to my manuals you need 10W engine oil for your tranny.

Darin

[STATELINE]

just wanted to let everyone here know my dozer is for sale in the classified section, nothing wrong with it, I'm just done with my project.

http://www.heavyequipmentforums.com/...ad.php?t=15436

[Ron]

Originally Posted by Orchard Ex

The powershift may have a little more to "go wrong", but it's easy to abuse the manual transmission. It has no "syncro's" (probably wrong term, but you understand what I mean) so you have to slip the clutch to get the gears to line up. If you aren't patient or are having a bad day it's like being in a coffeehouse with all the grinding. Not that I ever grind a gear on mine. Also, if you are running it for more than a day or 2 at a time the power shift is really nice.

I've put 200-300 hrs on a manual trans, and have wondered how long I've spent by the end of the day waiting on it to fall into gear.

[dewy-david]

Does anyone know where I can get bucket teeth for my komatsu d21s 3 ? Mine bolt on from the top. Mine are worn a lot along with the edge of my bucket. I might try and rebuild the edge or even replace it? I see I can buy a new edge from one source. Any ideas?
Thanks!
David

[John Aarons]

I have an 86 komatsu d20p-6. I have replaced the clutches, brake drums, seals, bearings & brake bands. But I am still having problems.
I don't have any literature or schematics on the dozer. What I do have has been from the kindness of Darin. I need to know what the part is called under the seat that the hydrolic hoses go into. (Where the 4 plugs are to check the hydrolic pressure) And does anyone have a schematic for it? I would also like a schematic for the pump itself.
The dozer runs and turns great cold, but once it gets warmed up it wont turn.
On the valves for the turning clutches, when you take plugs out to check, there isnt any pressure.
Thanks for help
mswensky67@gmail.com

[darinray]

Holy crap John I thought you had this fixed because I didn't hear back from you. What fluid are you running in your main clutch case? Did you clean the strainer and change the oil with 10W engine oil? OR maybe we shoudl try a heavier oil since it stops working when it's warmed up. ?????


Darin

[John Aarons]

We cleaned the strainer and it is filled with 10W oil (Happy Thanksgiving Darin)

[darinray]

Yes Happy Thanksgiving to you guys as well.

I thought you did but wasn't sure totally. So if it works when it's cold that means that the passages to and from are fine and the valves and everything seem to be working. Boy it sounds like the pump is bad. I dont have a used one here either but am sure i can find one if you want. I am hoping someone else will have some ideas too.

Darin