Satoh Buck alternator

   / Satoh Buck alternator #1  

hook574

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Oct 12, 2011
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Tractor
satoh buck
Hi I'm new to the forum, I have a Satoh buck that I am trying to get running for a friend. It has been sitting for awhile and the alternator and regulator was bad. I did a search here and found a few guys asking questions about going to an internally regulated alternator but no real good answers.

Heres what I did, it turned out to be pretty easy. I bought a GM style Mini alternator from DB electrical. It's a one wire hook up and the modification to install is minimal. All I had to do was drill out the mounting ear on th block to 3/8 and flatten out the tension arm. The biggest problem was removing the radiator to drill out the mounting ear.

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I could use advise on what to do with the fuel system to clean it out, it was stored with fuel in it and the fuel bowl was pretty gross when I opened it up so I'm pretty sure the tank is nasty as well. I was hoping that there is an adative I could use to clean it up.
 
   / Satoh Buck alternator #2  
If it's really nasty inside with rust and contaminants, and there's no other way around it, I've used a power washer with soapy water. Spray around inside until all the leaves, soil, lizard carcasses or whatever has accumulated is free and drain it out. Then, naval jelly (phosphoric acid) shaken around inside the sealed tank will remove the remaining rust. Wash the tank clean of the phosphoric acid many, many times with copious amounts of fresh water.

After it is absolutely, beyond a doubt acid-free, blow the tank dry with an air nozzle. After it is dry, pour acetone into the tank, shake that around, and run it out the tank outlet. Do that several times over, because the acetone will carry any residual water out with it. Then put several splashes of fresh fuel into the tank, shake that around, and drain out the valve. Repeat the fuel flush several times, then you should be good to go.

It's kind of risky putting water into the fuel tank, as well as the phosphoric acid, but if you have to get it clean, do what you need to do. Make sure you get it all out and dry though, then get fuel into the tank and keep it full. Replace all the fuel hoses, and you should be in good shape! Good luck, let us know how you turn out.
 
   / Satoh Buck alternator
  • Thread Starter
#3  
Thanks for the info, the fuel lines are already replaced so that part is done. I tried to take off the injection lines but they looked like they wanted to twist so I stopped messing with them. I was thinking they probably needed to be blown out. How do you get the nut free from the ferrel so that you don't twist them?
 
   / Satoh Buck alternator #4  
If the tank is filthy, replacing the fuel lines just means the gunk gets to the filter quicker. If it's not that bad, then you're fine.

The injector lines don't need to be blown out. If they do, trying to blow them out with air won't work, and will need to be replaced or fixed some other way.

Diesels can sit much longer than gasoline engines can without problems. If the system has stayed dry, just drain and flush the fuel system before the injection pump, replace the filter, add fresh fuel, and fire it up.
 
   / Satoh Buck alternator
  • Thread Starter
#5  
That's great news. Hopefully some clean fuel and hydraulic fluid and it will be ready to go home. Then I get my Jeep :thumbsup:
 
   / Satoh Buck alternator #6  
There's a primer called POR-15 that was designed for rusty fuel tanks. Clean, dry tank, pour in the POR-15, rotate the tank to cover all surfaces, pour out excess, let dry.
 
   / Satoh Buck alternator
  • Thread Starter
#7  
I looked inside the tank and there was no rust so I got lucky on that one. There was some junk on the bottom so I gave it a good flush with fuel and that got out pretty good. I may have to go back and change the filter after a few hours of run time but I think that will be it.

It fired up and it ran well no overheating or anything I did notice the oil light wanting to flicker at lower RPM so I need to put a gauge on that. I was looking on the side of the housing that the oil filter screws onto and saw a plug, is that a good place to get a pressure reading?
 
   / Satoh Buck alternator #8  
I think that is where mine is. Make sure you get a gauge that reads at least 100 lbs.. These critters have higher oil pressure than many other engines.
 

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