What happens if I added too much Hydraulic fluid on JD 5105

   / What happens if I added too much Hydraulic fluid on JD 5105 #1  

skycruiser

New member
Joined
Dec 10, 2019
Messages
8
Location
Reddick, FL
Tractor
John Deere 5105
I cant tell by sight glass if it has too much or not. What should I do. I changed the loader cylinder that had been leaking then I added about 6 gallons of new fluid.
I don't want to mess anything up on itit seems to be working okay.

Thanks for any assistance on this.
 
   / What happens if I added too much Hydraulic fluid on JD 5105 #2  
6 gallons seems like a lot. JD sells dye for the fluid to make it easier to see in the sight glass.
 
   / What happens if I added too much Hydraulic fluid on JD 5105
  • Thread Starter
#3  
Is there an easy way to drain some of it out back to the jug or bucket?
 
   / What happens if I added too much Hydraulic fluid on JD 5105 #4  
The drain plug.. then either refill back or just not completely remove the drain plug and let it leak out.

Not sure what you mean by "easy", but also could get a pump and use a hose down into the fluid.
 
   / What happens if I added too much Hydraulic fluid on JD 5105 #5  
According to TractorData.com the 5105 has a total hydraulic system capacity of only 8.5 gallons. So unless it was nearly empty, adding 6 gallons would put you way way over filled. Typically, if a hydraulic system is super over filled there is a vent tube somewhere that it will start blubbering out.

Any time you add fluid you should do so slowly and wait 5-mins for it to flow down to the sight glass. On my 2720 it takes so long that I typically have to wait over night to get an accurate reading. When you don't add red dye to the fluid it can be very difficult to see in the sight glass.

If you raise the 3PH and extend the boom and bucket cylinders on the loader it should consume enough fluid to cause it to drop below the add mark on the sight glass. Then as you retract the cylinders and lower the 3PH you should see fluid flowing back into the sight glass. Can you have someone watch the sight glass while you extend and retract the cylinders and 3PH?
 
   / What happens if I added too much Hydraulic fluid on JD 5105 #6  
There ain't a dipstick?? My JD 4105 has a dipstick for the hydro oil,,
(ALL of my tractors have hydro dipsticks,, now that I think about it!!,,, :confused: )
 
   / What happens if I added too much Hydraulic fluid on JD 5105 #7  
The sight glass looks to be right above the fill port,,,

LV4194.gif


LV4196.gif


Could you look in the fill port, and possibly measure down to the oil level, then compare that to the sight glass distance from the fill port?? :thumbsup:
 
   / What happens if I added too much Hydraulic fluid on JD 5105
  • Thread Starter
#8  
Well what a mess I made but it was way too full. I drained out over 7 gallons before I got the plug back in. Added back 5 gallons now I can see it in the low level sight window. I've had enough of it today going to wait and see how it looks in the morning. Thanks for everything.
 
   / What happens if I added too much Hydraulic fluid on JD 5105
  • Thread Starter
#9  
I wish I could find the red dye but no luck here
 
   / What happens if I added too much Hydraulic fluid on JD 5105 #10  
Well I would say it wasn't that over filled, if you drained 7 gallons then put 5 back in and you are at the low level now.
I tend to run all of mine a bit over full, when I'm checking the sight glass I turn the tractor down a good hill if I can see the level then it's good enough.

Edited to add this;
an easy way to get just a bit or even quite a bit out is to disconnect a loader hose or put an open ended hose in a remote and then have someone hold that hose so it doesn't take off with it pointed in a bucket just ease that valve open.
 

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