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Old 06-21-2019, 10:51 PM   #1
Livingstonm
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14 bolt semi float help please

My back right wheel bearing has came out can anyone tell me what it requires to fix it? I assume I have to remove the axle correct? Also can anyone tell me what 14 bolt semi floats came in so when I go to the part store I can grab the correct parts.. any help is appreciated
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Old 06-21-2019, 11:02 PM   #2
mongocanfly
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Re: 14 bolt semi float help please

At a minimum you'll need a new bearing and seal...the sf rears came in a variety of trucks...mine came from a 91 suburban...you'll have to pull the diff cover...remove the bolt and crosspin from the diff...then remove the c clip...then the axle will slide out....its gonna be bear to get the outer race out of the axle tube...you'll need the correct puller and possibly some heat to get it out....and the correct drivers to get the new one back in....
Hopefully the axle and tube isn't damaged...
Curious?...wheres your rear brakes?
What's the axle in?...I assume it's not in the truck it came in....
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Old 06-22-2019, 02:20 PM   #3
kwmech
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Re: 14 bolt semi float help please

My money is on you needing an axle shaft also. What is sticking out is the seal and it seems to have been leaking for quite a while. Pull the shaft as described and have a close look at the bearing surface on the shaft.
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Old 06-22-2019, 03:37 PM   #4
Livingstonm
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Re: 14 bolt semi float help please

Quote:
Originally Posted by mongocanfly View Post
At a minimum you'll need a new bearing and seal...the sf rears came in a variety of trucks...mine came from a 91 suburban...you'll have to pull the diff cover...remove the bolt and crosspin from the diff...then remove the c clip...then the axle will slide out....its gonna be bear to get the outer race out of the axle tube...you'll need the correct puller and possibly some heat to get it out....and the correct drivers to get the new one back in....
Hopefully the axle and tube isn't damaged...
Curious?...wheres your rear brakes?
What's the axle in?...I assume it's not in the truck it came in....
It's in my 70 c10 converted to 4wd.. I took the brake off because I was going to replace them as well as the caliper then I noticed the play and found the bearing so I just put the tire back on with the brake off just so it wasn't jacked up till I figured out what to do
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Old 06-22-2019, 03:38 PM   #5
Livingstonm
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Re: 14 bolt semi float help please

With the amount of repair and I better off just buying a full floater?
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Old 06-22-2019, 04:09 PM   #6
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Re: 14 bolt semi float help please

I'd pull the axle and see how much damage there is 1st...buying a ff will cost way more than fixing the sf..if there is no tube and axle damage...bearing and seal will be a cheap fix...as long as that's all that's needed...
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Last edited by mongocanfly; 06-22-2019 at 04:15 PM.
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Old 06-22-2019, 05:55 PM   #7
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Re: 14 bolt semi float help please

Ok I'll check it out because I can get a 14bolt ff 3.73 for $250 drum to drum
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Old 06-22-2019, 06:13 PM   #8
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Re: 14 bolt semi float help please

I had a semi-float in my 84 K-20 when I got it.

It made a noise like a u-joint went I got it.
Found out it was the cross-pin ( that mongocanfly spoke of in post #2)
was broken.
I replaced it with a full-floater I had in a parts truck that I knew was
road-worthy.
Either will be Ok.
Depends on how much weight you haul.
Sounds like $250 for that FF would be the ticket.
Depending on it condition.
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Old 06-22-2019, 07:56 PM   #9
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Re: 14 bolt semi float help please

250 is a steal on that axle..id go that way as well...what ratio is your sf axle?
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Old 06-22-2019, 09:17 PM   #10
Livingstonm
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Re: 14 bolt semi float help please

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Originally Posted by mongocanfly View Post
250 is a steal on that axle..id go that way as well...what ratio is your sf axle?
Honestly haven't pop the cover yet to find out
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Old 06-22-2019, 09:18 PM   #11
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Re: 14 bolt semi float help please

just make sure your rear gears match your front gears
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Old 06-28-2019, 06:06 PM   #12
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Re: 14 bolt semi float help please

Around here 10.5" 14 bolt FF's are pretty reasonable and plentiful. I'd replace a SF with a FF any day if the deal was good enough. I had a 14 bolt SF in a 1991 suburban and had probs with it until the day i sold it. I've had 4 different rigs with 14 bolt FF's in them and they have been bomb proof. I'm in the process of rebuilding the 14 bolt FF in my '06 Silverado now.

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Old 06-28-2019, 11:34 PM   #13
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Re: 14 bolt semi float help please

Thank you all for the help
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