hitachi — Swing Function Drift Check

OPERATIONAL PERFORMANCE TEST / Excavator Test Measurement: 1. Select the following switch positions: Engine Con- trol Dial Work Mode Fast Idle Digging Mode 2. Operate the swing control lever fully and return it to the neutral position when the mark on upperstructure aligns with that on track frame after swinging 180 ° . 3. Measure the distance between the two marks. 4. Align the marks again and swing 180 ° . Then test in the opposite direction. 5. Repeat the measurement three times each and calculate the average values. Evaluation: Refer to the Operational Performance Standard in Group T4-2. Remedy: Refer to the Troubleshooting B in Group T5-6.

Measure Difference between Marks Mark on Track Frame Mark on Swing Bearing T105-06-03-010 T4-4-7 Power Mode Switch Auto-Idle Switch P Mode OFF