Arc weld
Veteran Member
I need some help with a frustrating problem that is driving me nuts. The fuel gauge in my 135 UK diesel was intermittent and then would only read a little above empty. I ordered a new sending unit and it was apparently the only one listed for a 135 UK. The arm for it was too low and hit the tank bottom so I couldn't install it. Doing some looking online I see that it is for an extended range tank that is deeper. I drilled a hole to adjust the arm higher with a bolt and then drilled out the spots welds to move it. I moved the arm up and then adjusted the float arm so it works similar to the original. Mounted it in the tank and started the tractor. No change, gauges comes up a little past empty. Had a friend come over to watch the fuel gauge ( I couldn't because of the cab) and with 12 volts grounded the sending unit and the fuel gauge went all the way past full. Shut tractor off and fuel gauge slowly went to below empty. Started tractor and fuel gauge went past full. The tractor had over 3/4 of a tank so I might have it adjusted to read full at a lower setting. This is fine as I just want to know when it's getting low so it doesn't run out. I saw something about 12 volts for more than a split second will ruin the sending unit or the gauge ( I think sending unit but couldn't find the full article online). I didn't feel like pumping fuel out of the tank to see if the gauge goes lower. I thought I'll just run the tractor for a couple hours next weekend and see if the gauge goes down. Can someone tell me if I might have wrecked the new modified sending unit or the gauge? This is one of those things that makes you want to pull your hair out. The new sending unit that had to be modified was $130.00!!! If I wrecked it, how can get the %$#@* fuel gauge working properly again?
Thanks in advance for any assistance you can provide.
Thanks in advance for any assistance you can provide.