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Hitachi Ex120 Problem

M

Mohd Azizi

Member
Joined
Dec 16, 2020
Messages
5
Location
Rompin, Malaysia
originally this machine works well even though all the wires related to the working mode have been cut,,,and I have changed all the strainers and my plan is to make a pressure tester,,,may I know what the pressure reading is?
 
G

gilcaay79

New Member
Joined
Oct 10, 2023
Messages
4
Location
Oroqueta city Philippines
-3Doc said:
You need the manual to replace the sensor and set the voltage properly. You can put the machine into a limp mode in order to get it home. If you look on the bottom of bothe pumps there is a four bolt cap plate over the end of the swash cylinder pistons. If you remove that plate you will see that it has a peg sticking up from the underside of the plate, if you turn the plate 90 degrees and replace it back in the hole then the pin will put the pumps into about halve swash and they will stay there the you can get the machine home if you feather the controls. As for your problem it sounds to me like the pump displacement solenoids, they tend to work fine when cold but as the machine heats up the coils break down and they quit working then the machine goes to full swash and stalls. Good luck.
Click to expand...
Hello 3Doc do you have a service manual of ex120-3
 
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