JHanko
Aluminum
- Joined
- Aug 13, 2010
- Location
- Joliet, IL
The hydraulic power pack on my QT6T is cavitating and losing pressure, shutting the machine down. The oil tank is full. It started a few weeks ago, with an occasionl growl that would only last a couple seconds. Now it is happening every time there is a demand for oil (open/close collet, tool change, extend/retract tailstock). If the machine is idle, the pump sounds normal at the set pressure. It acts as though there is a clogged screen or filter on the suction side that is causing this when oil is routed somewhere. I have looked through all of the manuals I have here and cannot find a hydraulic schematic anywhere, so I don't know if there even is a screen or filter of any kind. Any advice is appreciated.
