My throttle actuator went out on my mm55sr-2 and not being able to find one, purchased a similar appearing one for a pc75uu. Other than more throw and not throttling down if you go past a certain point on the dial, it has worked fine for a hundred hours or so. It got me wondering how many other crossover parts with, not only the Komatsu, but also the Cat 305.5/305CR are out there?
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