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Stock Auto Locking Hub won’t go back in! Help! GM 10 Bolt

RockBottomRacing

RockBottomRacing

1/2 ton status
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Did wheel bearings and hub/rotor assembly yesterday, also did the needle bearing behind the spindle. Assembly went well, but now I can’t get my Auto locking hub back in! I can get the snap ring to the edge of the hub bore but it won’t budge any further, never had this kind of trouble with manual locking hubs, what gives?!

I’ve followed the correct torque procedure out of the service manual, and the outer bearing is all the way in the bearing race. I thought maybe I put too much grease in so I pulled some out and tried again and still nothing. The hub is not hitting the nut, in fact from what I can tell it’s not hitting anything at all behind it. You can see in the grease where it stops and it stops with plenty of room to get the hub back in where it belongs. I need this thing on the road ASAP, so if anything has any tips or pointers it would be much appreciated! I’m even to the point where I might call 4 wheel parts about getting some warns for me...here’s the pic where I’m at currently.

91 Suburban V2500, GM 10 Bolt. AcDelco rotor/hub assembly, timkin bearings and seals.

Thanks guys!

DF2434CA-AE7A-4AD2-9015-021D377A02B9.jpeg
 
You have the locking washer in there correctly on the spindle? Locking nut with nub facing out. Then locking ring with nub into one of the holes, and then the outside nut sandwiching them all together?

You have the top groove on spindle facing up at 12 o'clock position?

45.jpg
 
locking nuts/washer

Red arrow, first nut.
Green arrow, locking ring
Blue arrow, secondary locking nut to sandwich

rings with arrows.jpg
 
I have the nuts and washer in correctly, and the spindle groove is at 12 o’clock, that’s part of why I’m so irritated, I triple checked it after it wouldn’t go all the way in, damnit lol
 
Is the wheel hub/bearings seated properly on the spindle? Sometimes it gets hung up on the ledge (see circled in blue) and wont seat properly, need to make sure you are pushing it on to spindle perfectly flat otherwise it will fight you.

2922964A-FB04-4F18-B61E-C0F3042A649B.jpeg
 
muddybuddy said:
Is the wheel hub/bearings seated properly on the spindle? Sometimes it gets hung up on the ledge (see circled in blue) and wont seat properly, need to make sure you are pushing it on to spindle perfectly flat otherwise it will fight you.

View attachment 315812
Click to expand...

I pulled it off and looked and it appeared the hub was all the way on, at first it fought me and I pulled it off and it appeared it was caught on that ledge, but I got it on, with the nuts and washer torqued and the snap ring in the grove in front of it... about to order some mile marker premium hubs on amazon prime guaranteed delivery tomorrow lol
 
Also looks like the amount of splined stub shaft exposed is short on yours compared to the photo, is your axle shaft Sticking out as far as it can?

Manual hubs are the way to go. Maybe this is a sign
 
muddybuddy said:
Also looks like the amount of splined stub shaft exposed is short on yours compared to the photo, is your axle shaft Sticking out as far as it can?

Manual hubs are the way to go. Maybe this is a sign
Click to expand...
I pryed in the axle shaft and got it as far out as I could, I pulled on the splines when I reinstalled the spindle to the knuckle to bring it as far through the knuckle as I could, but the picture shows the auto hub splines, not the axle shaft splines, when I start at it again tonight I’ll take a few pics with the hub removed to show where it’s all at. I’m almost 100% the hub/rotor is on the spindle correctly, almost just as confident for outer wheel bearing being seated correctly in the hub on the bearing race, I know for certain the spindle nuts and washer are in there correctly. It’s an AcDelco hub and I didn’t run my hand in the splines for the locking hub to check for burrs, but found none, and the hub does catch the splines and does go half way in, up til the snap ring, but then stops like I’m hitting a wall, with nothing behind it. I am going to check the axle shaft splines and see if some of them are boogerd up or something... gonna order those hubs, the warns are on national back order lol so let’s see how mile marker treats me :D
 
Is the large snap ring still in the outer hub preventing the Autohub assembly from going in all the way?
 
jeff in co said:
Is the large snap ring still in the outer hub preventing the Autohub assembly from going in all the way?
Click to expand...

Negative. The snap ring on the auto hub you have to compressor for the locking hub to slide into the hub bore. Right now I can’t get past the that point, like the snap ring hasn’t even made contact with the hub to prevent it from going in further. I did order the mile markers, so if I cant get it tonight I’m just gonna make sure the hub and rotor and wheel bearings are on right throw the caliper back on and the wheel and tire and I’ll put the mile markers on tomorrow night
 
Tough one....just going by memory but have only used the manual one for quite some time.

Maybe this might help?!?

 
I would pull the hub/rotor assembly off and test fit the auto hub on the axle shaft and hub separately. That’ll show you where the problem lies. I’m betting hub since it’s the new piece.
 
Any chance the depth of the hub casing on the new rotor assembly is different from the stock one? Measure from rotor surface out to end. Only other thing I can think of is in the video if the center portion didn't drop down all the way at about the 5:25 area of the video.

Not much help since I usually take auto hubs off and replace with manual locking hubs.
 
Hey guys, so I got the mile marker premium locking hubs installed. To answer the last two posts, I disassembled and the auto hub didn’t want to go in the new one or the old one, it was right for both even without the axle shaft splines. The new hub slid in both new and old snug but easy. However, the cap didn’t go all the way in on the side I didn’t change the rotor on. The cap contacts the snap ring (it is in its groove) with the seal still outside of the hub. I think the old hub is a China parts store hub. The mile marker fit the new AcDelco perfectly. It’s all back together now and runs and drives GREAT.

Thanks everyone for trying to help out! Love this site and the people on it!

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AE3C8CA9-50B7-46CB-91DD-176C86DA3DAA.jpeg
 
So on the new hub the MM assembly goes all the way in (rubber o-ring not showing)? Any gap at all?

Strange there is a gap on one hub and not on the other. :dunno:
 
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