Soild spacer or crush sleeve ?
Did you make measurements of the 2 pinions to compare all dimensions of the pinion stem and determine that they are the same ?
So this is the original 489 case to my AAR. Is also the original pinion and the original ring gear and original sure grip. I put new bearings on the pinion used the same washer behind the big pinion bearing. I used a crush sleeve eliminator with shims or more correctly shim with a new outer pinion bearing and new races. I had the nut torqued down down to 120 which was low but surely wouldn’t pull that yolk in more than a smidge once at his final torque. I had pinion preload set to 20 inch pounds of preload.
I was getting ready to install it so I was going to takeoff the yoke one last time to put the seal in and then recheck everything but that’s when I noticed the difference between the 742 case and my 489 case
So I ended up taking it all apart, removing the pinion completely, and just putting the outer pinion bearing on its race just resting there and put the yoke on top of the bearing and it is still out that far. It can’t go in any further, not unless I can move that race in deeper in the case by another quarter inch but it’s up against the lip in the case.
I’ll snap some photos in a minute
If the solid spacer is the same height as the crushed crush sleeve adding a spacer is going to make it stick out further like that. I have always had to machine a little off the solid spacer to use one.
do you have another crush sleeve that is not crushed , if not you can use the sleeve you have with a shim from your solid spacer kit and retorque it with the spacer to the desired bearing preload. Once you have it reset to what it should be and the the yoke looks right you need to measure the solid spacer with the shim and shorten the solid spacer to that measurement.
The solid sleeve (used in place of the collapsable one) was shortened. It was too long as you said so the preload couldnt be obtained. I shortened the solid crush sleeve eliminator enough so I could use a shim from my pinion shim kit to get the right pinion preload.
I took the pinion back out today (thats how I got all those pics above. But even still, the yoke sticks up the same amount.
If you look at the pics above, you can see all of the races installed in the case, are completely seated up against their stops. So, even without the pinion in the third member, I took the third member with nothing but the two pinion races installed and placed the outer smaller, bearing in the outer race, and just laid the yoke on top of the bearing in the gap is the same. The yolk can’t go into the case any further, because the end of the yoke is resting on the pinion bearing that’s sitting in its race which cannot be moved deeper into the case to close the gap.
Heres that picture. Its the 489 case, pinion races installed and seated. Small out pinion bearing then the yoke. I just don’t see any way for that yolk to move into the case deeper because the bearing is what’s holding it up and the bearing can’t go into the race any further and the race can’t go into the Case any further because it’s up its stop.
I’ve tried using the original bearing that I removed, but not the original race but the race looks to be exactly the same sizeM
I’m thinking this is just the way it is. I can’t explain it