Sandpro Hydraulics? Cancel The title field is required!

1. William Gullicks

   

   0 posts
   
   2/12/2015 8:02 AM

   We're trying to figure out which direction to go in diagnosing our Sandpro's loss of hydraulic power. The symptoms are coasting down hills (no hydraulic resistance) and no power to use the push blade. Raking it seems to operate fine. Wheel motors? Main pump? Any thoughts would be great.

   
   
   
   
2. Douglas Eggert

   

   1 posts
   
   2/12/2015 9:02 PM

   What model?
   
   My 1995 sand pro 5000 did something similar, figured out there is an aluminum diverter block or valve under the seat cover somewhere that had O rings in it. The O rings went bad. We had changed a couple of major components out before this was brought to our attention.
   
   Start simple before the costs to repair overrun the value of the machine.
   
   Good luck.

   
   
   
   
3. Henry Heinz

   

   0 posts
   
   2/13/2015 6:02 AM

   Try and find a flow meter and do a flow and load test on your wheel motors. You can also test your hydro then too. How many hours on your machine? With model is the sandpro? Most times you can find simple in-field test in the service manual that will help you out. Last one I had we had a bad hydro and both back wheel motors. If you do end up replacing and of those, do yourself a favor and remove the hydraulic tank a flush out really well before starting with new expensive parts. I'd personally purge the entire system a couple of times to get any contamination out. I've seen new motors and pumps get whipped out due to contaminants still in the tank/system.

   
   
   
   
4. William Gullicks

   

   0 posts
   
   2/13/2015 9:02 AM

   The machine is a Sandpro 3020 "1999" with 3600hrs on it. Are seal rebuild kits an option or are the internal components going to be to worn?

   
   
   
   
5. Kim Brock

   

   3 posts
   
   2/14/2015 9:02 PM

   Sounds like someone might have put fuel into the hydrolic reservoir when filling up machine with fuel. It has happened with our Sandpro 2000. Just a thought.

   
   
   
   
6. Andy Jorgensen

   

   1 posts
   
   2/15/2015 7:02 AM

   Kim Brock said: Sounds like someone might have put fuel into the hydrolic reservoir when filling up machine with fuel. It has happened with our Sandpro 2000. Just a thought.

   
   
   
   Happened here as well.

   
   
   
   
7. Henry Heinz

   

   0 posts
   
   2/15/2015 9:02 PM

   You can start by doing an oil and filter change and see if that's helps. However in my experience with a machine that old and high of hours its more internal wear than just a seal kit. You do have the option of removing the pump and motors and taking them to a local shop where they can test them for you, and if bad can rebuild them or replace them at a lesser cost than you can probably get them for.
   
   Regards,

   
   
   
   
8. Douglas Eggert

   

   1 posts
   
   2/17/2015 10:02 AM

   Sorry for not getting back earlier, on our 5000, the mechanic noted it was only o rings in the valve that was bad. However, he wasn't so sure there were not other contributing factors compounded by age.
   
   Good luck.

   
   
   
   
9. Stevenson Clint

   
   3/13/2015 11:03 AM

   Gas in the fuel is not very good at all. That happened to us here with our SandPro 14. I ended up getting a locking gas cap to put on the hydraulic reservoir. The gas really swells and breaks the "O" rings inside. More in labor than the parts.

   
   
   
   
10. Mike Tanis

    

    5 posts
    
    3/15/2015 5:03 AM

    Seems like gas in hydraulic tank is or was a common problem on older models, happened to me a few years back, I just happened to look over and see the operator filling the wrong side and caught it before he started it.