D8 14A Hydraulics

Just curious if anyone knows or has a schematic for the hydraulics on one of these machines? I noticed the other day that the blade was not lifting sometimes right away after a couple hours of work and if it did lift it was much slower than before. I am not sure which Hydraulic pump runs the blade. I believe the oil for the blade is in front of the radiator. Is there a pump by the radiator coming off the front of the engine? The lines for the cylinders go around and down under the radiator. Any help would be great!

Unless I'm mistaken, and it's the machine pictured in your profile picture, the pump will be driven directly from the front of the crankshaft. The pump, and valve, is located inside the reservoir inside the nosecone, in front of the radiator.

Ok. Thank you for that clarification. I kind of thought so but I did not have a chance to look at it yet. Would you know if there is a suction filter or relief valve in the circuit somewhere?

I'm not certain without doing some research. I would start by confirming proper lever/linkage movement between the control lever and the hydraulic control if you haven't already. There's a few pins and pivots that get worn and don't transfer enough movement to the control valve.

I'm guessing that if you weren't sure where the pump and reservoir are, then the oil level hasn't yet been checked, so that's another item to look at (assuming you haven't yet). If it's like the #44 etc., then there's a filter in that unit on the front. Might be a good opportunity for a fluid change as well as filters.