![]() ![]() I can't seem to find this Master Switch that is referred to in the diagram, and I'm not sure how it would affect the operation anyway since I don't see any connections to the directional contactors. I'm inclined to think something is wrong in these latches but no idea what and why both at the same time. I have no idea what resistance I should be seeing at each terminal except for the obvious GND and +ve closed circuits. If in Neutral, each measure 83 Ohms on the top right terminal, which drops to 40 Ohms if the respective direction is chosen on the DS. Under each contactor is a 4 terminal block that varies it's resistance depending on if the DS is in forward or reverse. I tested from terminal 13 on the terminal bar to the bottom (feed side) of the directional switch and get continuity when the brake is not depressed, open circuit when it is depressed which presumabaly breaks the contact, and this works as promised. I also took apart and dried the brake switch (neither seemed wet, but still gave them a good shot of air). I took apart and dried out the direction switch box pictured in that album, on the steering column. a/9ReVA (Copy and paste into browser address bar since I can't post a full URL link here) forklift was the third such instance of abuse of that same machine by him. First off, here is a link to a cleaned up wiring diagram on the inside of the contactor cover: Clark were the sole, and thus prominent, union solicitors. And it rolls fine once I manually connect the contactor pads.Īny ideas for troubleshooting this, or a better wiring diagram than the one inside the cover that I can't read anymore? I did pull a couple wires off the traction motor to clean up the contacts, but they went back on the same studs. I'm guessing there's an interlock that prevents one firing when the other does, but I'm not sure. I'm assuming something is wrong with the coil, but forward and reverse seem like they're mostly separate, so I'm confused why both stop working at the same time. I hit the brakes, it drops the contactor and stops moving. If I try to go forward with the directional stick, I have to reach down (with an insulated screwdriver) and push the relevant contactor manually. Then I made the mistake of washing 50 years of grease out from the inside, now I have an issue with the movement contactors. ![]() It worked fine, you could put the directional stick in forward or reverse and it would go that direction until you hit the brake. ![]() I have a 50s Clark with all-contactor drive circuits. ![]()
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