Amada HA-250w Horizontal Band Saw
Amada HA-250w Horizontal Band Saw
(OP)
We are having some issues with our front clamping vise. The vise will not open or close yet when I use the close button the light comes on saying that it is fully closed. There is nothing stuck in the vise and the whole machine was cleaned recently. The hydraulic fluid is full and the other vise works fine. Please help!!





RE: Amada HA-250w Horizontal Band Saw
RE: Amada HA-250w Horizontal Band Saw
RE: Amada HA-250w Horizontal Band Saw
RE: Amada HA-250w Horizontal Band Saw
Is there hydraulic pressure actually getting to the cylinder that operates the vise. If not, why not.
Is the vise mechanism internally jammed, or is it free to move in and out.
RE: Amada HA-250w Horizontal Band Saw
Did it work OK before?
Were the cleaners disgruntled employees?
Maybe a beer can fell deep down in the mechanism one lunch time.
Can the hydraulic hoses be swapped between the working and non-working vise?
I'd plumb a pressure gage at each vise to see what pressure
RE: Amada HA-250w Horizontal Band Saw
RE: Amada HA-250w Horizontal Band Saw
If that takes tools and wrenching and a bit of sweat and potentially a bit of the usual cussing at inanimate objects, so be it!
RE: Amada HA-250w Horizontal Band Saw
I mentioned a couple of options that I'd exercise first, and complete disassembly before some level of testing/troubleshooting is not one.
RE: Amada HA-250w Horizontal Band Saw
If there's a hose leading to the hydraulic cylinder in question, often you can tell if "there's pressure" just by watching and feeling while someone shifts the directional valve.
The solenoids on hydraulic directional valves generally have pilot lights on them so you can tell if "there's power" just by watching while someone activates the controls.
If you have pressure but not movement, you need to focus on the mechanics of the clamp.
If you have power but no pressure, you need to focus on the hydraulics at the valve bank.
You may need to trace the path of hydraulic hoses and pipes through the machine to identify with your own eyes exactly which valve is actually connected to the clamp. So be it.
Disassembling the entire machine prior to basic diagnostics is seldom the best course of action.
RE: Amada HA-250w Horizontal Band Saw
Brian appears to have the best trouble shooting guide here.
B.E.
You are judged not by what you know, but by what you can do.