Whenever the hydraulic controls are engaged, the motor begins lugging down hard to the point of stalling. The engine is also running hot because of the hydraulic load. The engine is like new condition. The pump has been resealed..... for whatever that's worth.
I had a Customer Support Rep from Komatsu (only because he's a personal friend) drive here to put his eye on it, and he couldn't really offer anything except that the hydraulic pump was "not unloading" He also did not have a factory service manual for diagnostics.
I will have a bit of a yarn to my old man and see if he still know anyone that can help you with that. The pumps on that machine will kawasaki pumps.
Do all of the electronic engine controls, track speed controls, pump control systems still work?
BTW, how many hours does it have on it?
That machine is a long track machine. It is the very first KATO 1250 VII that I have ever seen with a long undercarriage.
Shane, It does have a hy-dash gm30F. try finding one of those anymore (new or used) no parts available anywhere. the only thing wrong with mine is that the cylinder block cracked. all other internal parts are ok or reparable. but you cant make it work with a broke cylinder block.
As I said, try the bloke I posted above and the one that bigrus posted.
It is very possible that my dad has one in his collection but I am not so sure that he would be willing to do an overseas transaction.
Is the machine a 1220 SE or a 1220 SEII?