Creepy 8N Tractor

I got on the tractor, put it in neutral, pushed the clutch in, turned on the key and it starts up with a little choke on the 3rd or 4th revolution.

When I let the clutch out (still in neutral), the tractor actually moved a bit forward, maybe a 1/4 to 1/2 an inch, and the engine died. I did this 2 more times with the same results.

The seller said that was normal for his tractor, and that after the engine warms up, it wouldn't do it anymore.

He was right----after a few minutes of run-time, you could let the clutch out, no movement, no engine kill. Transmission seemed to work good in all 4 gears.

This is a new one for me----any ideas what is wrong with this 8N???

Tim

it's got a what? 45 hp power plant and it can't spin a thick tranny case of gear grease?

I know florida don't get real cold.. but the befginning of this year we did have some freezes. and I gotta say that none of my tractors tried to stall after start just by letting the engine turn the gear lube...

Soundguy

But yeah.. I hear ya.. we've all got our to-do lists.. and not all fixes are at the top of them. I myself have been nursing a leaky loader cyl that i just finally today had time to take it to get repacked... couldn't do it earlier because I had so much stuff to move.

Good luck!

Soundguy

This tractor has sat for a LONG TIME, although garaged, and all the fluids appear to be in great shape. There were leakage spots on the garage floor below the 2 holes where the cotter pins were dangling, so he may have used the thick fluid to hide leaks. One of the rear seals was leaking pretty bad too.

I did a dry compression check and from #1 thru #4 they were 93#, 98#, 96#, 96# with no blowby, or smoking.

Bob writes--"Worst case would be if the tranny has been run out of oil, and the gears and shafts are "galled" where the gears rotate about the shafts." -----Bob, if this would be the problem, would I have been able to shift gears as easily as I was able to? I am wondering if the "new looking thick tranny fluid" would cover up this potentially more serious problem.

Thanks, Tim

I can't say for sure. I have never seen an 8N tranny damaged like that (run out of oil), but have seen plenty of other trannies damaged like that. Hopefully, that is NOT the problem you are having, and if it were to come down to that, total disassembly would be required to determine the extent of the damage.

If you will notice, he says it's dragging with the tranny IN NEUTRAL, when he lets up on the clutch, RULING OUT pilot bearing problems.

Drag in the transmission is what he has, either due to thick, gummy oil, or more serious problems.

(9N's and 2N's have "sliding gear transmissions.)

So, if the tranny oil is really thick and gummy, the rotating gears try to drag the tranny shaft along with them. Fresh oil, and USE may clean the surfaces up, and reduce drag.

Worst case would be if the tranny has been run out of oil, and the gears and shafts are "galled" where the gears rotate about the shafts.

just WAG's...

Soundguy

When I find really thick fluid it makes me want to look real close at areas with seals or plan on replacing things like axle and PTO seals if I want to run 80-weight or the synthetic fluid in it.