JD 855 transmission slipping

[dfkrug]

Sure enough! Took transmission out and the gear fell off in my hand. Now the BIG QUESTION IS...do I need to fish the broken bolt head and washer out of the transaxle? If so this would involve splitting the tractor to get the front face plate off the transaxle.

Can't you just remove the PTO cover plate and fish in there with a magnet
wand? At least those parts are steel....you can't do that with aluminum.

 

[Brimstone10x]

Hey all . Ive been down this road a few times . Deere ofers a updated shaft for the hydro trans ,that uses a larger nut in place of the 3/8 bolt that has failed . Its been imposeble to remove the broken off bolt head and washer with a magnet. If you want to dismantal the trans axle you could remove them . We have just left them in there to save the labor costs and not had any issues. Its no an f1 car its a tractor . Just replace the bolt and washer and gear if needed and reinstall the hydro trans unit. It lasted this long do you need it to last another 20 years ? John.

 

[mfreund]

If it was my tractor I would want it to last another 40 yrs!!!

 

[MartyinPA]

Hey Folks,

My JD 955 started a similar symptom yesterday. When facing downhill the transmission "slips" accompanied by a high pitched whine. However, it goes uphill with no problems - no noise, no slipping.

First thing I did was check the fluid and it was way low. So I topped it off but the problem persists. No change. Uphill runs fine, down hill it just takes off and rolls.

Could this be the same problem with the bolt that he was having on his 855?

Any other thoughts?

Thanks,

Marty

 

[jd110]

Absolutely sounds like it. The gears is helical cut and it will drive under load in forward. Free wheels going down hill and will not back up.

 

[MartyinPA]

Does anyone have a set of instructions to get to that bolt, remove it, replace it, etc? I cannot get to my service manual (electronic copy on a crashed PC). Any pointers would be appreciated!