rocketscientist
New member
I inherited my Dad's old John Deere 820 3-cylinder diesel utility tractor after he passed away four years ago. It was manufactured in Manheim, Germany. I have been working on it for months restoring and painting it. I drove it new off the truck when I was 10 years old in 1970 so I'm kind of attached to it. I have it looking and running well except for one thing at this point. It has the 8 speed forward, 4 speed reverse, collar shift transmission. The left shifter lever has the Park detent on the upper left. The lever used to be spring loaded to the right into the parking position but now just flops around, although it will go into park. So, I figured the park spring was missing or broken. I removed the transmission top cover and shift levers and discovered that the high-range shifter shaft (P/N AT29387) has a broken and missing forward tab on it. The forward tab retained one end of the parking detent spring (P/N T28680). I assume the broken tab and the spring fell to the transmission sump. In any event, I am wondering what is involved with replacing the high range shifter shaft. Can it be done without splitting the transmisison? It appears that it might be possible to remove he rockshaft housing--just aft of the transmission top cover--to access the high range shifter shaft but I really don't know. I don't have a technical manual. Can anyone advise what is involved in this repair?