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Different worksite scenarios require different truck loading strategies for your hydraulic excavator. Knowing the best practices for truck loading can reduce your excavator cycles, save on fuel costs and keep your worksite moving efficiently. Here are some tips for truck loading while benching that can cut back on time and money.
The ideal bench height should be about the length of your excavator’s stick, from boom pin to stick pin. If you are loading unstable material, the height should be a bit lower.
Minimize your cycle times and make your swing distance as short as possible. For most applications, using Smart Mode gives you the right balance of economy and power.
Just as you would when trenching, dig from the top down and work your way across in layers. Going to the bottom of the pile each time takes longer and wastes movement.
The truck should be positioned so the nearest side rail is below the boom/stick hinge. Work as smoothly as possible to avoid spilling material, and dump with the wind at your back to prevent dust from obscuring your vision.
A few extra tips:
If you’re loading over the rail, the rail should line up with your excavator’s boom and stick pin. Loading over the rail with the truck on the bottom level gives you depth and reach to dig, and allows for alternate truck positions, so you can load one while another truck is getting into position. In this scenario, your swing is minimized — usually 90 degrees for the first truck and only 45 degrees for the second.
Thru-the-gate loading is a drive-by method best used when the number of available trucks is limited. It minimizes the load time and gets trucks back on the road much more quickly, because trucks don’t need to back into position. Your hydraulic excavator only needs to swing 90 degrees, so cycles move very quickly for the operator.
Make sure to spot the truck with a full bucket, but slightly forward. This positions the truck so you have easy access over the tail. Also, use the swing action to spread material evenly in the truck body. Otherwise you may dump the material, then have to come back and spread it across the truck body, slowing the process down.
Here are a few basics when loading trucks in any scenario.
More questions about the best techniques for digging and loading with your hydraulic excavator? Sign up for Cat Equipment Training Solutions’ operator training here.
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