I have read all of the threads that have anything to do with the HITACHI 200LC. I have checked fuses, computer is operating normally
Out of the 4 sensors they all tested fine. ALTHOUGH the angle sensor was a little suspect.
STEP 1: I removed the sensor and checked with a small screwdriver to see if the fork on the swash plate was intact. I could rotate the fork freely which indicates that one of the arms must be broken.
STEP 2: I put my multimeter in parallel on the ground and sensor return wires and adjusted angle sensor to roughly 1.45 or 1.54 Volts which is where it should sit in normal operation ** (I may not be accurate with the set voltage values because it has been several months since doing this but a guy with lots of experience had told me to set it to this so I am not making this number up) ** I then reinstalled the angle sensor.
STEP 3: I got a friend to start the machine and operate it while I monitored the voltage.....
WHAMMO the machine ran awesome no stalling or slow operation.
THEN.. the voltage changed and the machine acted up again. **( I cant remember which did what but from what I gathered after a few tests. Either when the voltage goes above or below the value that I had originally set it causes one of these two things.
ISSUE 1: the machine goes into a limp mode where the engine is at high rpm but all the hydraulic functions are slower than molasses.
OR
ISSUE 2: the machine runs fairly normal except it will stall out when you run the hydraulics full out (two functions at the same time or fully extended or retracted)
My question to anybody is. Has anybody had this problem before? What have they done to fix it? Is it possible to tear down the pump and replace the fork? Does anybody have a rebuilt pump? Is there a manual that shows step by step instructions for tearing down the pump?
Or is my troubleshooting completely effed
and I am so far out I should get my head checked?