ESDE
Member
- Joined
- Mar 15, 2017
- Messages
- 19
- Location
- east coast
- Occupation
- self employed due to low boredom threshold
Machine is a 2006 Volvo EC25 that is new to me, with 4000 hours. Machine starts and runs ok, digs with power; as in you never really hear the engine bog down while using the bucket. Traveling is a different thing. I just sorted the wiring and got the two speed working, same issue in high and low. If I feather the drive controls, it moves ok. If I just push them full forward or back (not abruptly, but a steady move to full) it causes the engine to load up and stall. A probably separate issue is that the right drive will just stall out occasionally, usually when turning. I imagine it's either running over the relief (assuming the left and right drives have separate reliefs) or leaking past a seal in the pivot. But what would cause it to stall out?
I have read that there is a load sensing valve. For this to be functioning correctly (pump pressure increased to meet demand) the engine should be at max RPM correct? The throttle control has been hacked, and I am wondering if the max RPM. I am getting is high enough.
FWIW, I did find a factory manual on line. It's 2000 pages and full of schematics, but the layout is not intuitive or user friendly. I also have just picked up a gauge set, and am struggling to figure out which test port is for what circuit.
Is there a way to test the center pivot? Maybe test line pressure at the pivot inlets, compared to at the drive inlets?
Any help is appreciated. I've been fixing and using bobcats for 15 years, but this machine is 2 steps more complicated.
SD
I have read that there is a load sensing valve. For this to be functioning correctly (pump pressure increased to meet demand) the engine should be at max RPM correct? The throttle control has been hacked, and I am wondering if the max RPM. I am getting is high enough.
FWIW, I did find a factory manual on line. It's 2000 pages and full of schematics, but the layout is not intuitive or user friendly. I also have just picked up a gauge set, and am struggling to figure out which test port is for what circuit.
Is there a way to test the center pivot? Maybe test line pressure at the pivot inlets, compared to at the drive inlets?
Any help is appreciated. I've been fixing and using bobcats for 15 years, but this machine is 2 steps more complicated.
SD