JDCrow
Well-Known Member
Good morn, new member but been lurking around. Pulled the trigger on an EX120-2. Has a minor issue. Can I post here or start a new thread?
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Hitachi Ex120 Problem
- Thread starter spunkeymonkey
- Start date
mg2361
Senior Member
Welcome to HEF JDCrow
!
Please start a new thread.
!Please start a new thread.
JDCrow
Well-Known Member
Thanks!Welcome to HEF JDCrow
Please start a new thread.
HUGO4it
New Member
Hi everyone
Hitachi 120-3 stalling
Check that the accelerator cable that goes the injector pump is in good condition, because it runs under the exhaust it can melt , the inner cable has a find plastic coat that when melted can catch or jam it from working right if in doubt start the digger and put it by hand and tie it some way and then work the digger hope this makes sense
Hitachi 120-3 stalling
Check that the accelerator cable that goes the injector pump is in good condition, because it runs under the exhaust it can melt , the inner cable has a find plastic coat that when melted can catch or jam it from working right if in doubt start the digger and put it by hand and tie it some way and then work the digger hope this makes sense
HUGO4it
New Member
Also stops it revving up
JDCrow
Well-Known Member
On my list
02DIG
New Member
There are a lot of people on this thread who have inserted or were in the process of inserting a hydraulic conversion kit in their ex120-2 or ex200-2. I would like to know how people have found the results and if there are in cons to doing it
Your feedback would be greatly appreciated as I am looking at converting my ex120-2
Thanks Marcus
Your feedback would be greatly appreciated as I am looking at converting my ex120-2
Thanks Marcus
bc timber
Member
Hi, I did mine 3 years ago , its slower but no more ecm fuses blowing, i say i am happy with it
02DIG
New Member
Hi Bc Timber
Thanks for replying to my question. How do you find tracking? Can you still use the hare mode and is your pvc still plugged in? And did you convert to a manual throttle
Thanks
bc timber
Member
yep still plunged in , the hare mode works just fine.
what is the procedure for this conversion
Hi there I have a Hitachi ex120-3 with same problem just wondering why do hydraulic oil heat up after 1 to 2 hours working did you ever get it sorted in your machine any help would appreciated thanks
wifeshelper
New Member
I'm new to this forum. I have a ex120-2 one day it wouldn't throttle up ec motor made a grinding noise. I could pull lever over and would hold rpm, if you pushed any of the speed buttons it drop in rpm. Was no blown fuses check continuity of wires between ec motor and ec computer all good. Both computers reds lights blink, looked over all wiring. Put new ec motor and ec sensor on no difference. Unhooked throttle cable can pull by hand , spring returns cable to off position. Help Please Thank you
mg2361
Senior Member
Welcome to HEF wifeshelper!
Should have started your own thread. Anyway, cable good? Did you check the voltage on the EC position sensor at low idle to make sure it is at 2.5 - 2.6 volts? (do not unplug/plug in the EC motor with the key on, it WILL ruin your Pump and Valve Controller). Check the voltage by backprobing. Did you perform a relearn procedure? There are many posts in the forum about all these procedures.
!Should have started your own thread. Anyway, cable good? Did you check the voltage on the EC position sensor at low idle to make sure it is at 2.5 - 2.6 volts? (do not unplug/plug in the EC motor with the key on, it WILL ruin your Pump and Valve Controller). Check the voltage by backprobing. Did you perform a relearn procedure? There are many posts in the forum about all these procedures.
Conversion made mine so slow that it was not even worth trying to dig, took kit off and bought new hyd controller and much better now.
Diesel0003
New Member
I'm looking for the hydraulic schematic for the Hitachi EX120-3 also.
My email is fireflame9978@gmail.com.
Thank you
My email is fireflame9978@gmail.com.
Thank you
tool_king
Senior Member
I emailed the manuals to you .Let me know you have them downloaded and saved.
Mohd Azizi
Member
Hi,,newbie here,,please help about my ex120-2,mfg no 12n-32841,,machine cannot working and travel and all wire was cut off
JDCrow
Well-Known Member
Sorru about your machine. You might want to start a new thread or go over 1 step at a time with pictures. Lots of great help here, might take some time to sort your issues.