Customer has a Terex TC50 excavator, ser # 0219. machine operates & fine for 15 - 20 minutes until oil warms up to operating temp. it then starts to slow operating speed until it quits operating or moving tracks. It acts like the pump is deadheading as it will drag engine rpm's down to a stall if you try to operate a function. When it cools back down it will work for a short period again. Anyone have an idea what to look for . Thanks, Terry
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