My PC210-8 was working great all of a sudden it became slow in B mode. The boom, one track and the arm curl was very slow. I checked the pressure switches on the junction box and all the pressure switches were damaged along with the hydraulic sensors behind the control valve for F and R pump. I replaced all the three pin switches which are 6 and the rest two are two pin (Red color) which I did not change because they were working. Also didnt change the pressure switches behind the...
Komatsu PC21O-8 slow in B mode
Komatsu PC21O-8 slow in B mode
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