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Hydrostatic Three-Pump System and Digital Controls

7:30
30:26
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What happens here

Examine the hydrostatic three-pump system located under the engine cover. It consists of one pump for the transmission (tracks) and two separate pumps dedicated to the auxiliary hydraulics. This design allows for precise control over power allocation between driving and operating attachments. The digital control panel features adjustable power settings for the transmission (e.g., 20%, 40%, 60%, 80%, 100%), allowing the operator to customize the machine's behavior based on the task (e.g., prioritizing power to tracks for digging or to attachments for high-flow tools).

Goal: Understand the architecture of the three-pump system and the functionality of the digital control panel.

Tools and materials

  • Digital Control Panel Cast Loaders — Adjusting power settings for tracks and hydraulics

What they say

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>> Exactly. One for the transmission and two for the auxiliaries. >> Okay. Say that one more time just so we can hear. >> So, for hydrostatics, three pumps hydrostatic for traction for hydrostatic transmission and also for auxiliaries. >> Okay. So you designed this to put the maximum amount of torque and power to the tracks >> while not taking anything away from your attachments. So that's why you have a three pump system. >> But you also did something interesting by allowing the customer, the end user to control the amount of power to the tracks. >> Yeah. >> And to the attachments themselves. So a guy can separate it. So, if he's running in heavy dirt and he's just doing digging, he may want to put all of his power to the tracks for that digging. But if he's running a high flow attachment and he's operate, maybe he's uh sweeping or running a grinder or something on the front of it, he can now put that power take it away from the tracks and put it into the attachments to optimize it. And you and you've done all of that with a very unique control panel up front. >> Exactly. >> Okay. So, we're going to go take a look at the control panel. And one of the things that we're going to look at is the size and clarity of the display because this is something that I've seen in much bigger, heavier pieces of equipment, but on something this size, you don't typically see a control panel like this, right, Filippo? >> Yes. >> Okay. So, walk me through what are we looking at with this, my friend? So basically to control the transmission you just go on the work work uh side >> and uh you can adjust in this case the transmission where you can have a traveling power setting or you can change in um 80% 60% 40 and 20. So the most the the percentage on the transmission you the less. >> So you can control the amount of power that goes through the transmission that goes through the tracks through this display. >> Exactly. >> Okay. So like I said, I've been talking to Filippo for a while and half the things he doesn't understand, but that's fine because this is not your native language. So you guys have patience with them, but I understand it eventually. So, as we look at this, let's just take a look at the operator panel itself. So, we've got two massive control sticks. And Harry, I'm going to have you jump in here cuz I do have a question for you. There's some new changes that is…

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