There are 2 switches on steering turntable that controls which drive motors operate depending on which way they are turned. Also 2 power fuses for l/s drive motor and r/s drive motor. Probably 175 Amp fuses. Could be as low as 140 Amp. If contactor pulls in then check fuses, contactor condition, cabling or motor itself. If the contactor does not pull in, check switches.
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