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Ex 200-5 pump control

Volvomad ยท 2017-01-12 08:15

The machine works fine 90 % of the time ,but sometimes the swing goes to half speed and the left track gets very weak and slow . It seems like one pump is not cutting in propperly . So far the solution is to turn the machine off for a minute and restart with crossed fingers . I cant see it being a wiring problem as the machine is placing rock armour ,quiet a rough job , but if it starts off right it stays that way for a long time . Is it the ECU , is it one of the pump sensors or switches ,the wiring harness is gone fairly hard and a bit tattered . What do ye think ?

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