Komatsu Excavator PC128-UU Boom Hydraulic Problems
Serial number 19XX.
This has been sitting for about 3 months. Today I went out and fired it up. It started right off. but there was a constant beeping. The oil, coolant and hydraulic are all OK. I figured it had to be something else. After it warmed up some, I attempted to move it around to see what the problem was, and here is what I discovered:
It shows a code 37. When it is just beeping:
The blade goes up and down.
It travel forward and reverse.
It swings left and swings right.
The boom goes down, but it DOES NOT go up.
The boom extends out, but it DOES NOT come in.
The bucket opens and closes.
The thumb works both ways, but occasionally sticks and kills the machine (but this is not a new problem, it did it last fall).
When I pull the override switch, the beeping stops, but there is a constant buzzer sound, and:
The boon extends out AND back.
The boom goes down AND up.
All other functions also work.
Any ideas what it could be or where to start. Could the cold weather (it only got down to about 5 degrees here), have anything to do with it?
Thanks in advance.
Pat
Serial number 19XX.
This has been sitting for about 3 months. Today I went out and fired it up. It started right off. but there was a constant beeping. The oil, coolant and hydraulic are all OK. I figured it had to be something else. After it warmed up some, I attempted to move it around to see what the problem was, and here is what I discovered:
It shows a code 37. When it is just beeping:
The blade goes up and down.
It travel forward and reverse.
It swings left and swings right.
The boom goes down, but it DOES NOT go up.
The boom extends out, but it DOES NOT come in.
The bucket opens and closes.
The thumb works both ways, but occasionally sticks and kills the machine (but this is not a new problem, it did it last fall).
When I pull the override switch, the beeping stops, but there is a constant buzzer sound, and:
The boon extends out AND back.
The boom goes down AND up.
All other functions also work.
Any ideas what it could be or where to start. Could the cold weather (it only got down to about 5 degrees here), have anything to do with it?
Thanks in advance.
Pat
Komatsu Excavator PC128-UU Boom Hydraulic Pr
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