I posted earlier about how the needles on the gauges of my 4025 would stick at "0" and later start working, after the tractor had run for 5 or 10 minutes. I solved the problem. I got a tip from a guy with a Deere who had the same issue. Here's the deal:
When the tractor isn't running the needle rests against a little post. That post is covered with a black paint. After a while that paint gets sticky. It might be the hot weather, or it might just age, like when books sit on a shelf a long time and stick to the paint. I noticed when I pushed on a couple of needles with my fingertip, I could feel them "pop" loose from the post. It's a very, very light touch, light as a feather, so it doesn't take much to hold them.
I opened it up and very carefully took a razor blade (or scalpel or exacto knife) and scraped the black paint off the post where it touched the gauge needle. Then, just for good measure, I put a tiny bit of silicone lubricant on it. Then I cleaned the glass and carefully put it back together.
Problem solved. No more sticking. Everything works perfectly.
When the tractor isn't running the needle rests against a little post. That post is covered with a black paint. After a while that paint gets sticky. It might be the hot weather, or it might just age, like when books sit on a shelf a long time and stick to the paint. I noticed when I pushed on a couple of needles with my fingertip, I could feel them "pop" loose from the post. It's a very, very light touch, light as a feather, so it doesn't take much to hold them.
I opened it up and very carefully took a razor blade (or scalpel or exacto knife) and scraped the black paint off the post where it touched the gauge needle. Then, just for good measure, I put a tiny bit of silicone lubricant on it. Then I cleaned the glass and carefully put it back together.
Problem solved. No more sticking. Everything works perfectly.
