splined pump with spirol pin-hole location needed

[Jeff in Pa Charter Member Find all posts View Profile Close Jeff in Pa]

I'm building a CV driveshaft adapter for a guy who wants to keep the spirol pin. All the others I've build use the center hole in the splined pump shaft. What I need to know is how far from the front of the splined shaft is the hole for the 1/8" spirol pin.

Thanks
Jeff

[Jeff in Pa Charter Member Find all posts View Profile Close Jeff in Pa]

Got a reply from the guy I'm building the adapter for. It looks like 3/8" from the end of the shaft.

[J-Mech Owner Find all posts View Profile Close J-Mech]

Good deal! I only have one splined pump, and I don't know if it has the roll pin hole or not. Doubt it does.... but it's down in the storage barn, and I couldn't really easily get to it. Glad you got what you needed!

[Diesel Doc Charter Member Find all posts View Profile Close Diesel Doc]

Jeff - a question comes to mind. Since the shaft is splined, how will you "time" the hole for the pin? Being splined and having the hole a little off, CCW or CW, you wouldn't be able to turn the hub to line up the holes. I'm curious because I was going to attempt to make a coupler myself and that part of the puzzle stopped me in my tracks.

[Jeff in Pa Charter Member Find all posts View Profile Close Jeff in Pa]

Jeff - a question comes to mind. Since the shaft is splined, how will you "time" the hole for the pin? Being splined and having the hole a little off, CCW or CW, you wouldn't be able to turn the hub to line up the holes. I'm curious because I was going to attempt to make a coupler myself and that part of the puzzle stopped me in my tracks.

Well, you could have me make your parts

I measure the diameter and move my mill to center. Then I put a drill in the chuck and center the coupler by eye ( I've been a machinist close to 40 years so I'm practiced). I also drill the hole about .010 larger than factory just in case I'm not quite perfectly centered.

[Diesel Doc Charter Member Find all posts View Profile Close Diesel Doc]

Gotcha! and I do have you make most of my parts. I am still learning how to be a machinist after being a diesel wrench for 40+ years. Math was never my strong suit so the going is a little slow. Thank heaven for calculators!