Reverse gear is the one farthest back on the pinion shaft. It rides on a sleeve that lets it &amp;quot;idle&amp;quot; while the trans is in other forward gears. It sounds like it has seized to the sleeve. I&#039;ve seen the High/Low gears on the input shaft seize before, but not the reverse. Looks like it&#039;s going to be a major project. Good Luck, WB.