Oil & Fuel GC1715 Blowing hydraulic fluid

   / GC1715 Blowing hydraulic fluid #71  
That’s the million dollar question though. He puts the old oil back in and it works fine, like before the oil change. So the question is…what oil did he use which caused the issue? He may never admit…😉
 
   / GC1715 Blowing hydraulic fluid #72  
I've been running the recommended fluid with no issues. I just don't see how using the recommended fluid could possibly cause the issue shown in these images.
It shouldn't, he's got something else going on there.
 
   / GC1715 Blowing hydraulic fluid #73  
lots of talk about fluid type here. my vote would be to verify completely that the filter(s) are micron compliant with filter specs. other than that, best of luck
 
   / GC1715 Blowing hydraulic fluid #74  
I agree…but why does it work fine with the old oil back in it? Don’t think that he changed the filter to the old one, but maybe he did?
 
   / GC1715 Blowing hydraulic fluid #75  
For what its worth there is one mention of a 10 micron filter in maintance manual.... Anything with a larger micron size would not cause a restriction issue.... Funny thing is I can get a WIX 11 micron filter for a kabota the will fit my GC1700 series a lot cheaper then the MF filter...

NF CG17xx hydraulics....jpg




And for what it worth ... Had to order a bit to top up system after hydraulic hose failure...

P1020168.JPG

(sorry about picture quality)
 
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   / GC1715 Blowing hydraulic fluid
  • Thread Starter
#76  
Well it did it again today so back to the drawing board its not the fluid. I put Permatran 821xl fluid in it good for transmission and hydraulic
 
   / GC1715 Blowing hydraulic fluid
  • Thread Starter
#77  
I have changed the filter 3 times during this problem got them from two different dealers and both gave me the same # except for once I got the # for GC2300
 
   / GC1715 Blowing hydraulic fluid #78  
Is that a factory backhoe tractor or non-backhoe?
 
   / GC1715 Blowing hydraulic fluid #79  
Is that a factory backhoe tractor or non-backhoe?
The GC 1705 and GC 1715 are NOT factory backhoe.... The GC 1710 and GC 1720 ARE factory backhoe... The real difference is the GC 1705 and GC1710 are like 22HP and the GC 1715 and GC1720 are 25HP..
 

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