871 PTO leak- wont stop

Tiger Joe

Member
been running our 871 to mow with a brush cutter for 3 seasons with no issues.

beginning of this season- we notice leak at PTO. so we buy seal and replace.

all is good until first time we use the PTO- starts leaking once we park the tractor.

thought ok maybe the bearing is bad (though it didnt appear to be) and ate the new seal up. this time we replaced everything- seal, bearing, sleeve.

tractor was fine but again first time we mowed, its leaking again. the fluid looks like its coming right out the PTO shaft. is there something I'm missing? Do we need a new PTO shaft?
 
Anything is possible here. New parts can be faulty or it can be your shaft is worn or scarred where the seal mates with it>
 
There is a sweat on sleeve on the PTO shaft that the seal lip rides on, yours probably was a groove worn in it, you'll have to check with New Holland to see if it is still available.
 

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