You need to remove the hood and and check the return circuit clear back to the shifter cover. The plastic line goes from the pump to the fitting on the hydraulic reservoir then another line goes on back to the right front of the shifter cover. This just need to be blown through to check that it is open back to the transmission cover. This just dumps the oil back into the transmission sump. If the hydraulic pump has not been removed and rebuilt then that is more than likely where the problem is. Too many mechanics don"t want to pull the pump so they try to skimp by just replacing the exterior pump seal. That only works a small percentage of the time. If the return circuit is open then you will need to pull the pump. You will need to do this from the top. Remove the radiator and oil cooler together. Then the pump drive coupling. You may or may not need to remove the fuel tank. Some you do and some you don"t. Then remove the hydraulic pump.
Then you will have a decision to make. The removal of the pump from the tractor is not a high tech thing to do. It just takes some time. I would save the shop labor rate and do that myself if you have a place/time to do it. Rebuilding the pump is more of a challenge. If you are mechanically inclined it is not "that" hard to do. If your system just had this leak. If it is acting funny in other ways then you might have several problems. Then you need someone that has experience in the whole system. So you need to decide if you are going to tackle the pump rebuild or just remove it and take it to some else to repair. The pump needs to be disassembled and checkout. You might need a seal kit put in the pump and be good to go. You might have a input shaft with a grove cut into it. You can"t tell until it is apart. The lower hours the tractor has the less costly the repairs should be.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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