Go BottomWere does all the oil go
 | ackwik
Join Date: Apr 2005 Posts: 3 Northern Ohio 
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2005-05-06 110767
Recently took delivery of my BX23, have put on only 5 hours on but I'm in love.
Please remember the saying "The only dumb question is one that's not asked" before you laugh to hard at mine.
Removed the BH the other day and decided to check the tranny fluid, I found out it was low, not even on the stick. Since I just took delivery, I call the dealer and they provided me with some oil to fill it. But that's the problem, my question is, were does all the fluid go? The two marks on the dip stick are pretty close together so I assume it does not take much to fill it, but how is the fluid level affected by the position of the FEL/BH. The book says to check the fliud on a level surface I don't remember anything about the position of the implements when checking. Will I have a problem with over fill if I fill the tranny with the BH off and than put the BH back on? What happens when I retract the stabilizers? I don't want to operate it with low fluid with the BH off just to have it over filled with the BH installed.
Thanks,
Andy
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 | shortmagnum
Join Date: Nov 2003 Posts: 848 Wisconsin 
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2005-05-06 110768
If your BH has been used before, all the lines and rams should be full. Then when you hook it up and use it, there will be as much fluid coming back as you send out through the valves. So position of your BH or loader shouldn't matter.
Dave ....
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 | Murf
Join Date: Dec 1999 Posts: 7249 Toronto Area, Ontario, Canada 
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2005-05-06 110769
Dave, you're off just a little bit.
The two sides of a hydraulic cylinder are NOT the same in volume, nor even close for that matter.
One side of the cylinder has a piston in it, that piston's worth of volume must be made up by fluid on the opposite side.
This is also why a cylinder has much power in one direction than the other, the cylinders power is created by fluid pushing against a piston, however in the retract direction the area of the piston if diminished by the area of the piston rod itself.
For example a 4" cylinder with a 2" rod, supplied with 1500 psi, would develop 18,850 pounds extending, but only 14,137 pound retracting, a difference of nearly 2.5 tons.
Likewise, that same cylinder, with say a 24" stroke, would have a volume fully extended of about 302 cubic inches, and fully retracted of about 227, or a difference of 75 cubic inches. That doesn't sound like much, but it is a difference of 1/3 of a gallon, if you consider how many cylinders could be involved the volume can add up fast.
Best of luck. ....
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| shortmagnum
Join Date: Nov 2003 Posts: 848 Wisconsin
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2005-05-06 110776
OK Murf, you got me. The bad part is we went through this very same topic a few months ago. You gotta hit me with a hammer a few time before I catch on. :)
Dave ....
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| Murf
Join Date: Dec 1999 Posts: 7249 Toronto Area, Ontario, Canada
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2005-05-06 110779
I'll leave the 'hammer' up to your good wife, LOL.
As one of my professor's used to say "The devil lives in the details.".
Best of luck. ....
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 | harvey
Join Date: Sep 2000 Posts: 1550 Moravia, NY 
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2005-05-08 110827
Not sure on yours but my little JD has a sight glass if the front end is up or down 1-2" I'm either over full or low.
When BH is on the rear of tractor squats and is over full when off it raises up and is low.
The sight glass used to drive me nuts. Now if I see oil ok if I don't I curl the bucket down raise the front 1-2" usually that is all it needs to see oil.
Tractor is so picky that it has to sit same level each time 3ph same position same air pressure... it's a PITA. Oil on the dip stick/sight glass is good go for it. A little over a little low check it again a week from now.
Have fun ....
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