I'm used to things to problems with the excavator getting worse. But today a problem actually largely disappeared.
Prior to today, the Hitachi EX270 LC boom and stick would not hold in the air without falling. The boom would drop steadily, even without a load in the bucket. With the clean up bucket full of wet muck (two to three cubic yards of material) at full extension, it would fall relatively fast. That meant that any loading operation required rapid action (as in very fast) to dump the bucket.
For the past few weeks, I've been using the excavator to load into a large loader bucket and using the loader to haul the muck away. The ground conditions are too wet for the loader to have much traction, so loading the loader bucket with the excavator is the easiest way to fill the loader bucket efficiently. Needless to say, the excavator and loader bucket have had a few close encounters.
Today, for no apparent reason, the problem largely disappeared. Without a load in the bucket, the boom and stick will now remain aloft for an extended time without falling. And loading became much easier as the bucket did not rapidly descend when heavily loaded. This allows for a lot more finesse and control. This is so easy compared to before!
Explanation? A piece of O ring or other debris had been jamming a valve somewhere and finally dislodged? Any other ideas??
Prior to today, the Hitachi EX270 LC boom and stick would not hold in the air without falling. The boom would drop steadily, even without a load in the bucket. With the clean up bucket full of wet muck (two to three cubic yards of material) at full extension, it would fall relatively fast. That meant that any loading operation required rapid action (as in very fast) to dump the bucket.
For the past few weeks, I've been using the excavator to load into a large loader bucket and using the loader to haul the muck away. The ground conditions are too wet for the loader to have much traction, so loading the loader bucket with the excavator is the easiest way to fill the loader bucket efficiently. Needless to say, the excavator and loader bucket have had a few close encounters.
Today, for no apparent reason, the problem largely disappeared. Without a load in the bucket, the boom and stick will now remain aloft for an extended time without falling. And loading became much easier as the bucket did not rapidly descend when heavily loaded. This allows for a lot more finesse and control. This is so easy compared to before!
Explanation? A piece of O ring or other debris had been jamming a valve somewhere and finally dislodged? Any other ideas??
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