Eaton HO72 yoke swap

[ChrisWhewell]

Well I finally got the pinion nut off the HO72, had to spray it with PB Blaster for 10 days. I found a replacement yoke from another HO72 but it won't go right on, see in the first photo, the deflector is not as pushed back as much as the one on the original, now-sheared yoke is. So the replacement yoke wont go in to the same depth as the original What do I have to do ? Just put the yoke on the pinion and crank the pinion nut until the deflector moves up the neck of the yoke so the deflector on the replacement yoke allows the splines to rest at the same depth as the old one was ? I wonder if that spacer will move... I know nothing about this stuff !!

In second photo I got a Spicer 3-2251-1 that takes a 1410 u-joint but it has a shoulder along its smooth machined outer surface that prevents it from going into the splines on the pinion shaft as deep as the original yoke did. So I don't know what the heck to do, just need to get the truck on the road again... Arrghhhh!!!

http://inventorweb.com/yokes1.jpg

http://inventorweb.com/yokes2.jpg


Here's the spicer unit specs, FWIW http://www.northerndrivetrain.com/pr...-4-2251-1.html

[Wrenchbender Ret]

The deflector is just a shield. You can tap it off & clean up the yoke & press it back on to match the old yoke. It has nothing to do with the spacing. It you force it back by tightening the nut, it will rub the housing.
I don't understand the second question.