Hitachi EX1200-6 Travel Weak or Noisy? Gearbox or Complete Travel Device — and Repair or Replace
Sep, 20 2026
Quick Answer Travel that is weak or noisy on an EX1200-6 is a symptom, not a diagnosis. Work in three stages:1. Separate hydraulic from mechanical. Is one track affected or both? Both points to the supply side — pumps, travel control, reliefs, centre joint. One points to that travel unit or its circuit.2. Decide gearbox or complete device. The travel device (9270013-class assembly: 9270013 /...
