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Hi forum members and experts!
I own a Volvo EC55B Pro with about 5k hours on it. Love the machine, but I have a problem with it, and I could do with some troubleshooting hints & tips.
When moving straight forward (or backwards) there is a hissing sound from the hydraulics. This only happens when both drive motors are running simultaneously. When lifting up either side and running only one motor there is no hissing sound. I have noticed that driving a little bit slow, but if I work the boom, stick or bucket while driving it seems to run normal.
Lately I have noticed that the swing is quite jerky too, however, if I use any other hydraulic function while swinging, action is smooth and normal.
Where do I start looking?
I own a Volvo EC55B Pro with about 5k hours on it. Love the machine, but I have a problem with it, and I could do with some troubleshooting hints & tips.
When moving straight forward (or backwards) there is a hissing sound from the hydraulics. This only happens when both drive motors are running simultaneously. When lifting up either side and running only one motor there is no hissing sound. I have noticed that driving a little bit slow, but if I work the boom, stick or bucket while driving it seems to run normal.
Lately I have noticed that the swing is quite jerky too, however, if I use any other hydraulic function while swinging, action is smooth and normal.
Where do I start looking?