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| I purchased a 2015 Case 580 Super N backhoe a couple of months ago. I noticed when shifting the shuttle from forward to reverse or reverse to forward in first or second gear it engaged the drive train with quite a hard jerk and the machine would start to mover forward or backward at a fairly good speed. The shift felt much harder than the way my previous backhoe, a 580 Super M felt. The Super M seemed to shift much slower and engage more gradually that this one.
I first tried to lower the idle rpm to see if that helps but the idle is controlled electronically by the computer. It is adjustable through the input screen on the dash but it is already set at 975 rpm which is the minimum rpm setting to chose from. I thought maybe it was because the machine is newer with less wear and the transmission fluid was cold. Today I used for a longer period of time for the first time. It is a 90 degree day and I was leveling 40 tons of crushed stone to make a new parking pad. I was pushing stone for over half an hour in first gear with 4WD on. Transmission temperature gauge got up to about halfway in the green. Idle was at 975 rpm which is the minimum setting in the control panel.
Even after it was hot , whenever I shifted from forward to reverse or reverse to forward at idle it shifts pretty hard ad you can hear and feel a real drivetrain "clunk" and it starts to move right away if I don't hold the brakes. Seems like this would be hard on the drivetrain.
When I bought the backhoe the previous owner said he had someone change all the fluids about 40 hours ago. I am wondering if maybe they used a higher viscosity oil in the transmission and that is causing the hard shifting. Appreciate if anyone has any thoughts on that or any suggestions on what else to look at. | |
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Case 580 Super N Backhoe Shuttle Shifts Real Hard
