case 970 loses hyd/press after quick warmup

darbnosirra

New User
Tractor had been working fine then set for a few months with little use. Now after startup, everything works for a couple minutes then all hydraulics quit. no p/s, no front or rear lift, no drive. Changed hyd fluid and filters, no change. It will continue, after shutoff for a couple minutes, to have drive and slow lift rates for a couple minutes than nothing again. Nothing else has changed since normal use, although i did not bleed anything after the filter change. There was some non-gritty sludge in oil filter caps. Any ideas would be greatly appreciated. [email protected]
 

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