Last weekend I was setting 4x8 posts. I put 5 bags of 90lb concrete in the fel to go to a post.. my slope was MAYBE 8’ in 30’... the bucket was about 24” off the ground and the tractor took off totally un controllable.. breaks locked riding on 3 wheels. thought I was gonna die. The bags were evenly dispersed. Tractor was in 4wd high range. What did I do wrong??
First off, are you
SURE you were in four-wheel-drive? What you describe sure sounds like what happens when the tractors in 2 Wheel drive, and has a fair amount of weight in the loader, which takes weight off the rear wheels. And in 2 Wheel drive ONLY the rear wheels have breaking.
IF the brakes were locked in 4WD, you were sliding. (OR the brake pedal was pushed hard, but the brake was not functioning, and the wheels were turning and not locked. )
I know the feeling as I have both accidentally knocked my tractor out of 4WD and started down a slope with a load in my loader, and took a ride like you. I have also slipped on wet grass when going down a slope in 4WD. Another ride, not fun!
So it seems to me:
* You thought you were in 4WD but were actually in 2WD, OR
* You were sliding and thought you were rolling, OR
* You have an intermittent problem with brakes not working sometimes (probably unlikely)
Perhaps there are other possibilities...
As mentioned above, low range is best going down slopes. But it will not help during a slide or if you lose rear wheel traction in 2WD.