Mini Dozer - Project near complete

[workinprogress]

The electric hydraulic plow pump might be a good idea. A quick ebay search didn't produce much but I am not sure of the specifics.

Are you talking about something like list?

Surplus Center - 12 VDC 1.3 GPM 2500 PSI SPX SA POWER PACK

 

[davedj1]

when you look on ebay, search for Meyer plow pump.
they aren't hard to rebuild and can sometimes be had cheap.

 

[cschulz]

Winter Products, Snow plows and parts


Chris

 

[ignatious47]

Did you ever hook up your motors to direct drive like you were thinking about?

 

[workinprogress]

No I had not done the direct drive yet. While moving to the direct drive seemed simple at first it became more challenging. Where I thought I could put the motors resulted in few sprocket teeth engaging the track (less than 3). I was concerned about that. In order to put the motors in a better location (better wrap on the sprocket) would have required lengthening of the tracks. Due to these challenges I slowed my modification.

 

[ignatious47]

I wonder if using gears would work very well. I don't have a clue where to look for gears that would be big enough though. Then how would you keep them lubed up and clean enough? There must be some way to transfer power to the tracks in a foolproof way.

 

[dcobado]

How much did it cost to build the mini bulldozer

 

[dcobado]

Do you think I can do this with a Murray.

 

[randallklyons]

I see this is an old post but perhaps if you don't mind answering a question. The hydraulic motors I see in the photo above I am curious about as far as specs. RPM, pressure requirements, and ECT.

 

[LakeCruiser]

Nice!

 

[workinprogress]

The motors are 6.0 cu. You can find the pump specs at 0.43 cu in HYDROSTATIC KANZAKI DUP-7A TANDEM PUMP

 

[workinprogress]

I never totaled the expense of the project. I would estimate $500-700 by the time I was done. The dozer had worked pretty well since I completed it. Currently things are not working but that is due to some problems with the engine. The older Kawasaki engine has been tougher to get parts. First it was the float needle and seat. Now the igniter is shot. Trying to figure if I should just replace it or keep fixing it.

 

[farm boy00]

I never totaled the expense of the project. I would estimate $500-700 by the time I was done. The dozer had worked pretty well since I completed it. Currently things are not working but that is due to some problems with the engine. The older Kawasaki engine has been tougher to get parts. First it was the float needle and seat. Now the igniter is shot. Trying to figure if I should just replace it or keep fixing it.

I think is time to replace if it's costing more down time then running time

 

[HenryIV]

There was a few earlier threads about mini dozers. I am nearing completion of my project. Basically I took a riding mower with a bad rear axle and built a subframe for it. The sub frame consists of the tracks and hydraulic motor mounts. In the tractor frame I mounted a zturn pump/control unit. The first couple test runs seem fine but I have issue with the rear chain drive tension. Basically the chains from the hydraulic motors to the track jump off. Hope to get it solved this weekend. I will post some additional pictures.

I don't know if you completed this project but I used to do a lot of business with a few of the Caterpillar plants including a few excavator plants. If you can scavenge some wheels off an old boat trailer, they might be just the right width to support your treads. They are covered in rubber so the are quiet and combined with the trailer's leaf spring might give you the necessary tension. There often configured in a "H" pattern with 4 wheels and are fairly stout and offer a gap in the middle to clear the chain links. Try a marina, these parts would outlast the trailer's frame, so I'd offer a low sum.