B7500 HST hydraulic seal leak/failure

DWPress

New member

Equipment
B7500 HST
Jan 5, 2025
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1
Northern Michigan
Long time reader, first time posting. It's been a difficult and snowy winter so far in N MI first with water in the diesel (solved) and now my latest agony after near flawless operation in the 10 years I've had the tractor.

Started right up the other day and after letting things come to temp I raised the loader. Almost immediately I lost all pressure and a massive puddle of hydraulic fluid is on the ground right in the middle of the belly of the tractor. The leak seems to be coming from behind some plastic shielding. I do have the service manual but I'm not great at following the hydraulic schematic nor have much experience with hydraulics. If some of the smarter people here can help me diagnose before I crawl under the beast in 20 degree weather. I've attached some pics taken looking to the front and rear to hopefully help.

Obviously, it being a HST, it's not moving under its own power soon.

Thanks!

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