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Farmall 806 problems

J

jsmall576

New User
Hello all,
I am looking at buying an 806 that a farmer over the hill from me used until his barn burned 5 or so years ago. I stoped and asked him about it one day as I noticed its been sitting outside. Its a good straight tractor in need of rubber and paint. It is supposed to have around 1000 hours on a rebuilt motor. The batteries were flat so I have to go back some other time to hear it run and drive it. There are a couple of things that are bothering me about it. For one it doesnt have a rain cap on the muffler, so whats the chance its seized? Also I was talking to his boy the other day and he said it always shifted really hard (06 series thing) and had a clunk when you backed it up. What could be causing the clunk?

Thanks Jonathan
 
The clunk could as simple as loose rim clamps. It could also be something expensive in the rear end. But is is a good point for price negotiations.

Find out what a salvage yard/scapper would pay for that tractor, until it's running that's about all it's worth.
 
No cap, outside for 5 years? Chance of being siezed is pretty good. But I won't cost you much to find out.
 
The clunk sounds like a missing tooth on reverse gear caused by throwing the park brake in while still moving.
 
#1 all you can do is try to crank it.
#2 there are a lot of places in the shift linkage to get a little wear, and it all adds up. first thing is usually you run out of movement at the lever before it"s all the way in reverse. parts are still available.
#3 if you can start it and drive it, try to tell the frequency of the "clunk" in relation to something like the rear wheels ie if it clunks once every turn of the wheel, look for rim clamp. if it"s several, it could be reverse gear. with constant engine rpm, does throwing the TA change frequency? or shifting between 1-2-3-4? cause the H-L-R is the 3rd step in the driveline. that can help tell you where it is.

806s were extremely well built tractors, especially that D361 engine. but they are almost 50 years old, so who knows what has happened to it. for what that"s worth.
 
I'll second that, a buddy of mine was nortorious about doing that on his 706 till he got the bill for fixing it.
 
Thank you so much guys. Itll prolly be another week before I get a chance to go home and check her out. Ill be sure to let you all know how it goes. Thanks for the help.
 
A friend has an 806 and has had it for years it has always made a noise that you describe in reverse but it's never gotten any worse and doesn't hurt anything
 
Visualize how many inches of rain you get in your area, then think about pouring a column of water that height x the diameter of the exhaust pipe into the engine. Think that would be enough water in the cylinders to set it up? Bet it would and I'll bet that's what you're going to be dealing with. Friend of mine left his Olivar 60 our for a summer without covering the exhaust pipe, guess what? It is set up!!
 
hi jonathan, pretty good chance its either seized, or at least has a crankcase full of oily water. shift linkage can get sloppy on the 06 series. it can also be tightened up with some new parts and/or adjustments.
the clunk is most likely from dropping the park lock while it was still in range (not necessarily moving). you need to take your foot off the clutch before you drop the park lock, in case it has hung up in gear. otherwise you risk taking a tooth off the reverse gear. its not at all fatal with the clunk, but it is mighty annoying. don't ask me how i know.
gonna let nate borrow it if you get it? :)
 
haha who knows bill. Itll prolly spend alot of time over on the farm I work on.. . . Depending where Im working when Im finally done with school this spring.
 
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