Bought a new slip yoke for my toploader. Do you think the increased shoulder on the shaft towards the bottom of the yoke will hit the transmission when the cars suspension moves ?. My axel and left springs are out of the car so I can't check it myself.
can't say for sure.. but sure looks like that's a pretty wide shoulder to me. Worst case is that you'd need to have it turned down smaller to match the shaft by another 1/2 inch or so to avoid any interference. Just take what you need for clearance and not a whole lot more though becuase I'd put cash on that shoulder adding a significant amount of strength. Also be sure to check that the ID of the hole isn't stepped internally(larger ID bore under that shoulder) or it could get too thin for higher powered setups.
I'm worried about turning it down. I only bought it because my old yoke had some minor rust. If I cleaned my old yoke would minor imperfections left cause the new seal to leak.
potentially, yes. just depends on how many pits or grooves are left over after surface prep. I guess I don't completely see how that new part could be any weaker than the original part that was made without the shoulder to begin with if you were to remove some but not all of it to gain sufficient clearance for driveshaft movement. But I'm certainly no toploader expert and was just generalizing more than anything. I do know that the slip portion of the yoke will not go in and out much more than about 1/2 - 5/8 inch over the suspension/driveshafts typical travel range. Maybe just a bit more movement under the most extreme portions of the available arc. If you look closely at the old part.. you can see the wear pattern ends at about a 1/2" from the yokes flat. IOW, you wouldn't need to remove the whole shoulder to gain sufficient clearance and would still have part of that shoulder to end up with a stronger part over the original piece that came out(assuming the metallurgy of the new part is at least as good as the original piece). Where's baddad when you need him? lol
A tech at a trans shop looked at the old yoke and said he would try to clean it. He said he's seen worst installed with no leak. How much oil is in the rear tail housing ? I think most of it is kept in the gear case section but I never took a standard transmission apart before.
I've run a Toploader behind my Comet since 1986 and that is first yoke I've seen with a shoulder! It is pretty close to where the tailshaft seal is, so I would worry more about the seal sliding over both the shoulder and shaft, thus causing the oil seal to wear out. Also, how far do the splines go into the ID of both yokes??? You should beable to bottom out both yokes onto your output shaft. Your old yoke does not seem too bad and the tech should beable to polish it up pretty good, as Greg mentioned, so long as corrosion not too deep and can be polished out. How are the "eyes" on your old yoke? Old worn out u-joints can cause the eyes to elongate, so I would check to make sure they are OK (round) and no play between eyes and u-joint cups......good luck! David too bad you're not closer, I would machine out that shoulder........one other thing to check, did you compare diameters on both yokes, just looks like new one is larger than old, but could be the picture........ also check condition of tailshaft housings rear bushing and oil seal, while you have it out.....
Both yokes are able to push all the way in with no interferrence. Eyes on existing yoke are good and I'm going to try and clean it up. I still have time to take the new yoke back and get my money refunded. Thanks for all the replies.
