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Discussion Starter #1
I love this machine.
Since we moved back in the woods here in North Idaho we are faced with some challenges like a flooding road and property. Tons of snow
The fix?
Heavy equipment! I came to Idaho with a small John Deere compact tractor, 4x4 this sucker was my dad's and I am keeping it forever. It has become the base of operations for me, I use it for everything including moving all of our truck things around (loading and unloading broken down rangers and explorers)
Living here I need to dig and move dirt/mud and snow. Occasionally we will need to fix our road as it can wash out from the river or snow run off
I have been researching our needs for a year, saving money and coming up with a plan. The plan was originally a backhoe, because they can dig and push. We would need a 4x4 to handle the ice, well a 4x4 backhoe starts at about $25K. Some of these machines are a bit too large for sections of our road and at the top of our price range. So I made a decision, we are going to use a mini ex and a small dozer to do the job, with the Deere compact tractor cleaning up the mess.

So for months I was searching for the right machine, I found it!

1998 Takeuchi TB035 mini excavator!! Takeuchi is a Japanese company they have built heavy equipment for over 50 years, the quality of their mini ex is top notch, just like kubota, komatsu, deer cat, etc. In fact the Takeuchi brand is preferred by many contractors known for holding up well and having smooth operations.
Mine was $10K under our budget but it also needs a little work.
The machine itself is in excellent shape, all hydraulics and drives work awesome. The only looseness or wear and tear area is the bucket and pins, we need new bucket pins to remove some slop.

The electrical part of things and the engine side of things could use some serious help! That is where I come in. I can fix electrical and replace or rebuild engines.
None of the lights or gauges work, in fact the whole right console is Fubar. Non of the cold start aids are working (thermostart and intake heater)
The ignition has been bypassed and a Mr Gasket cheapo electric fuel pump has been added. The machine came with a can of ether, and it is REQUIRED for it to start when cold.
Once she is running she works very well until it gets hot and then under load...the engine will die and not re start 90% of the time. Let it cool off it will restart and go again. If it sat overnight it will not start without the ether.

So plans have begun to repower this machine and fix the electrical side of things. I want the warning lights and gauges working. I am getting quotes right now for a re manufactured Yanmar diesel. If the reman cost too much we may tackle the rebuild ourselves.
Yanmar 3 cyl turbo diesel, 33 horsepower. Has "some" leaks (like 10 of them)
Hour meter read 4300 when it quit working years ago I am sure

Pump, drives, undercarriage and the rest of the machine are in really really good shape, she just needs a new heart.
I suspect low compression as it is getting fuel and air, once running it runs well on all 3 cylinders it is just obviously down on power. When hot and put under load it dies.
Large oil leak on turbo oil return line, lots of oil leaks and a few fuel leaks. This sucker has been neglected for long enough!

So come along with me as we fix up the 1998 Takeuchi Mini Ex!!
I am also still shopping for a small dozer...but that is another thread.

Anyone here have experience with a Yanmar turbo diesel 3 cyl "refresh"? It could not be a more simple machine!! "Like a small cummins"





This rock has been in the wrong place for too long, first time I ever used the boom and bucket!




more pics coming! I need to perform a compression test and yes I have a diesel compression tester
 

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You will want to put ice cleats on your tracks to help with the ice, so it wont start sliding
 

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Discussion Starter #3
Good tip

The dozer is the one that has to do the ice hill in the winter months the ex will not be used for snow
The mini ex is for digging ponds, installing dam, culverts and french drains. removing and moving slash and brush, small trees. It does not have to ever travel the road again
the little dozer we are after will be for moving the snow when it slides off the roofs, building and keeping our road open during winter months.
Two of our neighbors already have small dozers...so handy.
I want metal tracks on the dozer, it should be able to make the icy hill with metal tracks, or so I have been told!

Right now I am looking at everything from refreshing the current yanmar right inside the machine all the way to a new engine from Yanmar themselves and everything in between.
Also with the pump side of things anything I should do while the engine is out? gasket between them seems to be leaking
I plan to service all fluids

Thanks keep them coming!
 

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Metal tracks slip very easy on ice without ice cleats.

The ice cleats I am referring to are tabs welded to the grouser so the weight of the machine punches through the ice and holds it in place alit better
 

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Ohh new thread to follow. see what he does with his new toy.

Explosive Diarrhea not ur friend but a great weight loss tool.
 

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Rubber track skid steer does really well in snow/ ice. good all around machine. Tracks run about the same as 2 sets tires, and last about the same
 

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Ohh new thread to follow. see what he does with his new toy.

Explosive Diarrhea not ur friend but a great weight loss tool.
About time you fiund this one, Mikey slacking on his stalking responsibilities
 

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About time you fiund this one, Mikey slacking on his stalking responsibilities
u know good and well my phone was occupied this morning.

Explosive Diarrhea not ur friend but a great weight loss tool.
 

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don't play well w others
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About time you fiund this one, Mikey slacking on his stalking responsibilities
Ya. Pay more attention to yer duties, and stop watching so much midget porn.
I think we're going to have to get your daddy Tom to set up an intervention soon.....
 

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u know good and well my phone was occupied this morning.

Explosive Diarrhea not ur friend but a great weight loss tool.
Yup. blowing up with midget porn.

TOLDJA
 

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Discussion Starter #12
PICS!


This is where engine meets pump, a small puddle will develop where the blue mark is when running
Seems minor but if engine is out I want to address this seal/gasket


Pump type


I think they were sniffing the ether too
Console fubar, instrument cluster is on the bench to see if it can be rehab


Mess, see the original ignition switch? yup still under there, lots of jimmy rigged wiring


coolant sensor MIA


Tiny turbo has oil leaks going in and out


This says it all
 

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Yap i agree fix the problems while its apart other wise u will be cussing ur self when you have to do it later and tear it all back apart. And believe me i have experience with that just ask me bout my transmission.

Explosive Diarrhea not ur friend but a great weight loss tool.
 

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Just kinda thinking out loud here .... I wonder how a Kubota 4 cyl would compare in size to the little Yanmar, as in say a used Kubota such as could be found in a Carrier reefer unit.....

Sent from my E6810 using Tapatalk
 

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Metal tracks slip very easy on ice without ice cleats.

The ice cleats I am referring to are tabs welded to the grouser so the weight of the machine punches through the ice and holds it in place alit better
#4 Rebar welded across every other pad works cheap too.
 

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Discussion Starter #16 (Edited)
Yap i agree fix the problems while its apart other wise u will be cussing ur self when you have to do it later and tear it all back apart. And believe me i have experience with that just ask me bout my transmission
Ah yes I know this drill well. I think I had my injectors out 3 times in a month and then twice in the next month before I got them seated properly.

I wonder how a Kubota 4 cyl would compare in size to the little Yanmar,
Now we are talking!
This is the kind of thinking I like, if it bolts up and makes the correct power it can work. I mean these things get fuel, signal to the starter and a throttle cable, you could put anything in here that fits. I am partial to the Yanmar as I have one in my John deere, I am not sure you can beat a Yanmar diesel in your equipment. Kubota is good Yanmar is probably better
However I AM having a hard time finding a replacement or rebuilt engine, seems this model is too old? WTH?
So also looking at other engines that will semi bolt in, similar power range

I have a few reman companies getting me quotes on a replacement lets see what they come up with.

Anyone rebuild /refresh one of these at home? In frame?
 

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I would reman the yanmar. I have heard they are really good motors. And then u ain't got to make something work.

Explosive Diarrhea not ur friend but a great weight loss tool.
 

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Definitely simpler just to fix it, if possible/affordable, I'm partial to the little Kubotas myself, the ones I've delt with in the trailers have been fairly simple. They are all mechanical if that means anything, start good cold, and hold about 11 qts of oil, not sure about the horsepower ratings though. If you don't get anywhere with your rebuild parts I guess it's an option. If you want pics or rough measurements at some point just ask.

Sent from my E6810 using Tapatalk
 

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Discussion Starter #19
making progress!
The machine no longer dies under load or when warm!
I have the instrument cluster working

Since heymccall from Heavyequipment forum pointed me to a possible fuel issue I started digging into it.
I found the way the mr gasket fuel pump was installed was causing an air bubble on the gravity feed side of things. I simply removed the bolt and laid the pump flat in the engine bay pan. Ever since this and cleaning the fuel bowl, the machine will run all day! It has more power and it runs more smoothly.
I checked inside the fuel tank, nice and clean no obstructions. The fuel level was getting low which was matching the height of the electric pump = air bubble = so she was running out of fuel!


Once it was running better I decided to change all the filters and crankcase oil.
Cleaned the air filter, replaced the fuel filter, replaced the hydraulic return filter, and changed the engine oil /filter.
She was also down about 5 gallons of hydraulic fluid.
Thanks to the owners manual I found the hydraulic tank sight glass and cleared it off
Now it runs even more smoothly!


I replaced the diode and all fuses in the fuse panel. Cleaned up all the wiring connections on the back side of the instrument cluster (monitor) and fuse box.
Now the instrument cluster lights up, all lights come on then go off, except the battery/charge indicator it flashes.
The hour meter is even lit up! Next is to hook up the wires for fuel and water temp gauges see if they work too
After that try to hook up the rest of the feed wires, the oil pressure light, and others, confirm the alternator is charging

ALL of the safety wires / gauge wires on this machine have been unhooked! No stop relay on this bad boy, instead it the engine shutoff is now done by cable.

I know where there is a coolant temp sensor, a coolant gauge feed, another what looks to be coolant temp sensor? (3 coolant sensors), I see the oil pressure switch on the engine.
What I do not see if the air clog switch?, and a couple of the others but we will get to that.
In the factory wiring schematic there are two parts to the instrument cluster, the "monitor" (or lights/gauges) and the "controller".
Can anyone tell me where the "controller" is what it looks like? LMFAO
My guess is the previous owner when removing the safety solenoid/ electric engine shutoff and safety devices ripped out the control module?

Next is the hard starting, she still wants the ether to restart. bummer
When cold (sitting all night) it will not start without a small shot of ether.
The rest of the day when warm she will start up sometimes it takes some cranking, sometimes it fires right away. I still suspect a fuel feed issue/injection pump and also low compression.
I need to perform a compression test and see where we are at. While the injectors are out I can watch the spray patterns

For now I am working to remove all the hacks on this machine, fix broken loose wires and hook up sensors. Also fix the rest of the leaks.
The turbo feed or return line is leaking oil, likely just a bad O ring
One of the long hydraulic lines from the pump to the main valve is leaking pretty good, I plan to remove it and replace it.
Some wires are chaffed here and there, I am fixing those as I see them

I ordered a new grid heater, $36 on Ebay made by NGK. I am hoping this might help with the cold start issue, but I still suspect a weak injection pump or low compression or both.
Engine has no visible blow by coming from PCV tube, no black smoke, only light grey smoke when cold. This is a good sign and improvement.
No glow plug or thermostart on this model, only the grid heater.
I am taking lots of notes
will get some pics!

She is digging the clearing brush all over the place. My world of shoveling, pick axing, moving tree stumps and brush and loading trailers just got a whole lot easier........
 
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