Posted by Shetland Sheepdog on October 27, 2009 at 05:35:14 from (72.64.10.173):
In Reply to: Ford Loader ID??? posted by JK-Mi on October 26, 2009 at 06:52:04:
NWMO 901 SOS said: (quoted from post at 23:31:38 10/26/09) [quote:1aac6d0ce0]I disagree with the statement that the level stays constant! When a cylinder is fully extended the oil volume is that of the whole cylinder, BUT when the cylinder is fully retracted the oil volume is that of the cylinder MINUS the displacement of the piston/ram INSIDE the cylinder. I will concede that there is not a great deal of difference, but there is some!
As to which position to have the cylinders in when checking the oil level, THAT I don't know!
HTH, Dave[/quote:1aac6d0ce0]
Good evening,
The way I picture it, Shetland is nearer on target. I believe the volume displacement from the piston itself will be the same extended or retracted, however in the retracted position you are using less oil as the ram displaces a fair chunk inside the cylinder as pressure is applied on only the outer portion of the piston, the "area" between the ram and the cylinder wall.
Typically, you will want to check your oil level with cylinders extended, but it may be different with the reservoir built into the frame.
Chris
As I indicated earlier, I'm not sure, but it would seem that if you filled to the suggested level of 8+/- inches down in the tower/reservoir, with the cylinders extended, that 8 inches would accomodate the additional oil that the pistons displace when retracted. Just my thoughts!
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