For the life of me I cannot locate the hydraulic oil cooler bypass valve in the parts manual. Machine is demoing buildings, running a simple bucket grapple, not hammer other high oil volume attachments. Hydraulic temp goes all the way to warning light within an hour, in the morning, and more often as the day warms. Cooler core is definitely clean, both air blown and pressure washed daily. Engine temps in check, just high hydraulic temperature. Is there a cooler regulator/ thermostat? Could the bypass valve be suspect. Tank temp is 210°F when the cooler top is only 140°F.
No replies yet.