On an lt 70 ,coming from the negative post on the battery there is a 16 or 18 Gage wire going to a solenoid in the fuse panel box.The original one had a resistor ,which broke causing a power loss to the control station.I used a jumper wire and continued sawing .Woodmizer sent me a replacement part that looks different ,no visible resistor,built in i assume.I installed it and it would not energize the solenoid.Hooked up the jumper and got current.Could i have installed this backwords ? I did reverse it to no avail.Is this part necessery ,i think so. Thanks al
Just guessing, but it was probably resistive wire. Do you have a VOM? If not, you absolutely should have. I would be calling WM in the AM.
On edit: Diodes are use in some instances to reduce arcing, but the answer is still to call WM.
slider,I have an LT40HD and lost my resistor or diode a few years back the same as you. I also have setworks on mine that has never worked even when I purchased the mill used. the mill still functions fine and I have never had an issue with draining battery or anything else! I figured it had something to do with the setworks and never replaced it. I would like to know what it is there for and if I should replace it. Maybe Sparks will see the post and jump in one this one or someone else who has gone through this problem and has fixed it themselves or with WM help. Tim
Hello,
This resistor lowers the voltage to the hydraulic solenoid. If you do not have this installed it may shorten the life of the solenoid. I see this fail when there is a a faulty ground or bad connection on the fuse and other areas. The wire should have a diode heat shrink into the wire.
This would be the solenoid in the fuse box that would turn on when the key switch is turned on. The early hydraulic mills did not have this solenoid and it would drain the battery voltage if the mills was on the hot contact strip for an extended period of time and not in use.
Hope this helps.
Marty
024451 WIRE ASSEMBLY, HYDRAULIC SOLENOID VOLTAGE DROP $12.66
The resistor, much like on cars from about 1975 and earlier, is used to reduce voltage to the coil/ignition system. The car ignition system uses full voltage when starting, then when you let the ignition switch spring back, it sends ignition voltage through the ballast resistor, thus halving the voltage. Running the ignition doesn't need a full 12V. Your resistor is reducing voltage. Jumping full voltage will work temporarily, but will shorten the life of the component. A diode has a couple functions, but one is sort of like a check valve. It only allows current to flow one way.