I purchased l in Oct.06 through eBay a 3 Point Backhoe from KPX Tractor. It had metric connection and I did not want to tie the backhoe into the NH TC33 hydraulics system. (did not know where and how anyway).
So I purchased a 21 GPM PTO pump from Prince Model HC-PTO-1A. I had the metric connectors replaced with quick connectors and finally managed to hook it all up.
Everything run smoothly, but whenever I operated a valve, the tractor stalled. At this time I did not know anything about center open / closed system. I reported my problem to the supplier, but could get absolutely no help from the KPX. After numerous calls to KPX they finally promised me a new valve set. Again, numerous calls until I received in May a new valve set, but it was not exactly the same type as the original. Two damper valves where missing.
Anyhow, I replaced the set but had more or less the same problem. The tractor nearly stalled and the oil got very hot very quickly.
I took the original valve set to a hydraulics shop and he said that this was a center closed valve set which will not work on my tractor.
Can anybody tell me from the attachment if the schemata shows an open or closed center valve set. I think it is a center open, but would like to get this verified.
Obviously it does not work with the continuous flow Prince Pump.
Could this valve set be hooked up anywhere on the tractor that it would work ?
Or could the valve set be modified into a center open system by drilling a hole in the endplate ?
Advise would be very appreciated. This problem, with no support from the supplier is driving me insane !
So I purchased a 21 GPM PTO pump from Prince Model HC-PTO-1A. I had the metric connectors replaced with quick connectors and finally managed to hook it all up.
Everything run smoothly, but whenever I operated a valve, the tractor stalled. At this time I did not know anything about center open / closed system. I reported my problem to the supplier, but could get absolutely no help from the KPX. After numerous calls to KPX they finally promised me a new valve set. Again, numerous calls until I received in May a new valve set, but it was not exactly the same type as the original. Two damper valves where missing.
Anyhow, I replaced the set but had more or less the same problem. The tractor nearly stalled and the oil got very hot very quickly.
I took the original valve set to a hydraulics shop and he said that this was a center closed valve set which will not work on my tractor.
Can anybody tell me from the attachment if the schemata shows an open or closed center valve set. I think it is a center open, but would like to get this verified.
Obviously it does not work with the continuous flow Prince Pump.
Could this valve set be hooked up anywhere on the tractor that it would work ?
Or could the valve set be modified into a center open system by drilling a hole in the endplate ?
Advise would be very appreciated. This problem, with no support from the supplier is driving me insane !