2005 Doosan solar 225lc-v stalling when boom held against relief at full rpm

[Tim Modine]

View attachment 193561 View attachment 193561 View attachment 193561

Hi Tim, if it is the machine era I am thinking about you should be able to see your pump pressures on the display (monitoring section) There should be 2 pumps displayed, check the pressure at bucket relief and stick relief. In regular mode should be 4785 +- 75psi. Make sure you are only operating 1 function at a time! To be certain of the specs, I will need the serial number and i can look it up. P.S. If the display is in BARS 1 bar =14.7 psi.
When operating a single function the pumps should work independently

old timer

 

[Tim Modine]

This from EPOS. Any idea?

 

[Tim Modine]

This from EPOS. Any idea?

That’s with key on not running. When running only change is red dot next to the zero is flashing along with a green light flashing as well

 

[old timer]

Hi Tim, sorry about the delay (service call with no internet)
I will start out agreeing with uffex that you are likely looking at an engine problem.
The EPOS display is '7' is standard power mode, the '0' is digging work mode. The green flash is communication.
Your pressures look fine.
The dash codes, if they are in history, no worries.
If the are current, the 23N code is the TPS (throttle position) open, that is related to the EPPR (proportioning solenoid) not working.
Hope this helps

 

[Tim Modine]

Hi Tim, sorry about the delay (service call with no internet)
I will start out agreeing with uffex that you are likely looking at an engine problem.
The EPOS display is '7' is standard power mode, the '0' is digging work mode. The green flash is communication.
Your pressures look fine.
The dash codes, if they are in history, no worries.
If the are current, the 23N code is the TPS (throttle position) open, that is related to the EPPR (proportioning solenoid) not working.
Hope this helps

Thanks again for the help. The codes are old from last year. code C:21N is from 1/03/18, C:23N 2/03/18 and C:34N 3/03/18. At that time i needed to change batteries as they went dead. They possibly were the batteries from factory i believe, they had Daewoo markings.Machine was not out working those date staid year. In regards the proportioning solenoid, where would that be located?. And is it a plug and play type of repair to change out. Sounds like it'd be an inexpensive part. Ran machine today without any issues after servicing the fuel system. Currently there's 6010 hrs on it.

 

[old timer]

Pretty darn good batteries! The proportioning solenoid is on the pump, and it is plug and play. Very glad you solved your problems.
Have fun!

 

[mmcmillan]

I don’t know where it is in Doosan, usually it’s on the back of the arm rests or under small covers in arm rests! I know Hyundai has it.

On my 225 daewoo when you flip the switch none of the hydraulics work