![]() I suppose there is no additive to the hydraulic oil that could help to stop or decrease the leak around the shaft because it could negatively affect the drive motors? (btw they look great also, no leaks anywhere). Otherwise all the pump that is visible and its controls are very clean, nowhere any sign of oil so I am really hesitating taking that assembly apart. Once the flywheel cover is open to see the coupler and the pump shaft then there is no way to rotate the shaft to develop the oil pressure and actually see the leak around the shaft. Maybe a tiny inspection video camera with a built in light could do the job but the flywheel could shred it in a flash if it touches while spinning. What makes the diagnosis more difficult is that the main pump shaft and the coupler are hidden inside the flywheel housing so it is impossible see the actual leak around the pump shaft while the engine is running. Hello AJ, I was kind of afraid that there is no quick fix for this. In the meantime if anyone can point me out where to get exploded view of the drive pump so I can get a part number for the seal and get some idea what tools I will need to take the drive pump apart, remove the old seal and replace it with a new one. If it is there should be no more oil on the floor anywhere. I want to find out if this is the last oil leak remaining at this time. The out tubing is hanging out through the floor cleaning floor hole with barbed fitting closed by 3/4" screw on cap so the oil it can be drained and measured. For now I have installed right angle barbed fitting to the flywheel housing, attached 3/4" clear tubing connected to a plastic container placed beside the battery. Taking out the drive pump is not a big problem but to take it apart is where I don't think I have the right place and all the tools needed to replace the seal. Only after that, when the oil appeared on the floor under the flywheel housing area again I took an inspection mirror and saw hydraulic oil dripping from the 3/4" threaded hole in the bottom of the flywheel housing. So I thought the oil was leaking from the damaged hoses and I replaced them. After cleaning out all the mess and feeling the hoses I found all of them had spots worn out to the steel braid sharp as needles (made many holes in my fingers). Where all the hydraulic houses are crossing under the drive pump/ flywheel area the oil level was really deep because the hoses and dirt built a dam preventing the oil from draining out. There was lots of oil on the floor everywhere. It all started with the skid steer leaving oily track behind it when moving and the level in oil tank needing constant replenishing. ![]() Can you access and replace the leaking seal with the pump mounted? Quoting Removed, click Modern View to see Did anyone had the same or similar problem and could share some ideas what to do? Thank you. The skid steer moves no problem but going up hill it leaves an oily track behind and I have to keep refilling the hydraulic oil in the main tank. I used an inspection mirror and saw few drops falling down then followed by a short trickle, then nothing for a second, then again drops, trickle and so on. The oil starts dripping as soon as the engine starts. I searched the Case forum and so far I did not find anyone having similar problem so I am at loss what to do or how to fix it. If I got it right the oil from the tandem drive pump must be leaking around the splined shaft that slides into the splined coupler inside the flywheel housing. First thought was it is the main engine seal but then I realized it is the hydraulic oil because it is very clean compared to the diesel engine oil. Hello everyone, I could really use advice how to proceed with oil dripping out from a 3/4" threaded hole in the bottom of flywheel housing.
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