Early bronco 9" bend axle? - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 02-17-2012, 08:53 AM   #1 (permalink)
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Early bronco 9" bend axle?

Hello, I have a problem with my ford 9" was leaking bad and after review I have my doub about the axleshaft being bend, the drum was rubbing against the backing plate......how can I make sure the axlexhaft is straight?


tnx for your advice.
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Old 02-17-2012, 08:56 AM   #2 (permalink)
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Get a new axle and truss it. Common sense.
If you drove with a bent housing you may have screwed up the splines on your axle shaft and spider gear. Junkyard a new axle. Ive bent several 1/2ton housings and pulled axle tubes on 8.8s.
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Old 02-17-2012, 09:34 AM   #3 (permalink)
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The other axleshaft is fine, is just one and the splines look fine.....but I have heard the flange of the axleshaft some time bends....I dont know how to inspect that...

comments??
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Old 02-17-2012, 03:52 PM   #4 (permalink)
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Roll the axle on your garage floor and watch the flange??? Flanges bend pretty easyand more than likely the problem.
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Old 02-17-2012, 05:38 PM   #5 (permalink)
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If you have a dial indicator you could simply spin the axle in the housing and watch runout. If the housing is bent that can be fixed.
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Old 02-18-2012, 01:49 AM   #6 (permalink)
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Bearings?
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This isn't meant to be a flame job, but Jesus, do you guys ever read or search? Do you suppose your question has already been answered somewhere? Look it up for your fuckin self.
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Old 02-18-2012, 08:49 AM   #7 (permalink)
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If all else fails, buy a bearing, remove the axle, and push it into the housing and try moving it around. Sometimes the housing itself is just worn/hallowed out. If it is you can stop the leak for a while, but, not fix the problem.

Jack the leaking side way up, throughly clean where the bearing mounts, use red RTV along the bearing mounting surface, install the axle, let it sit overnight. I took a MIG welder and touched mine up on a very low setting.
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Old 02-18-2012, 03:48 PM   #8 (permalink)
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Junk the 9 inch get a full floater. (Dana 60) I've had the axle shaft break at the bearing/flange lost the wheel crashed the truck.
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Old 02-18-2012, 07:46 PM   #9 (permalink)
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Wtf???!!! really??!! I always believed the 9" was strong.....did you have a 31 spline axle?

tnx for the commnet
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Old 02-19-2012, 04:51 AM   #10 (permalink)
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No 28 spline and 38" tires but I had rebuilt the diff, hhad new bearings pressed on with new brakes and drums. Nine inch is a quick change axel on the track but still a light weight 1/2 ton axle. My 2 cents
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Old 02-19-2012, 05:46 AM   #11 (permalink)
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Quote:
Originally Posted by RKDxpress View Post
Junk the 9 inch get a full floater. (Dana 60) I've had the axle shaft break at the bearing/flange lost the wheel crashed the truck.
Well since it is in an EB the chance of finding a narrow Dana 60 is slim to none. So that means he would have to go full width. Plus you can make the 9' FF if you want. One anecdotal story shouldn't make you do anything.

The 9" is plenty strong with the right modifications and some commonsense. Obviously it sounds like you need a truss and possibly a new housing. What year is your bronco? if it is earlier then this is a good time to swap in a big bearing 76'-77'. then do yourself a favor and search a little on 9 inch upgrades. after you learn some stuff decide for yourself what upgrades you need and don't
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