Kingpattycake
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I just re geared to 4.10 with a junk yard front end and the first time I put it in 4 low the passenger side axle tube twisted on me. Is there anyway to fix this?
Front differential help
- Thread starter Kingpattycake
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Are you sure both diffs are 4.10? A mix of ratios will do nasty things.
When you say axle tube do you mean the shaft or the actual tubing of the axle?
Just wondering if you had a cracked front diff housing.
When you say axle tube do you mean the shaft or the actual tubing of the axle?
Just wondering if you had a cracked front diff housing.
Kingpattycake
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No I pulled it apart and counted the front teeth. The front diff basically rotated up and the tube the cv axle slides in stayed in place. From what I understand that tube is just press fit into the housing.
Kingpattycake
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No, the bracket is fine. The housing rotated up and snapped my front drive shaft.
Weird! Are all the bolts and brackets that hold the diff in place all there? Something must have broken to let the diff move like that because it's all bolted to the subframe.
To find out what's wrong I'm afraid your going to have to pull it out and probably replace the aluminum housing.
To find out what's wrong I'm afraid your going to have to pull it out and probably replace the aluminum housing.
JeepJeepster
Full Access Member
Doesn't mean much, but I've never heard of that happening on a KJ. Gotta wonder if it was damaged at the junk yard.
On good ol steel diff's, Ive seen people just run a weld around the tube. No clue how you would fixed a pressed in aluminum diff tube.
On good ol steel diff's, Ive seen people just run a weld around the tube. No clue how you would fixed a pressed in aluminum diff tube.
duderz7
Full Access Member
There's a small bracket that bolts to the left side of the diff. If it was missing I could see how your situation could happen. With all the brackets (3 total) it provides 4 mounts to the subframe in roughly a rectangular pattern. I'd think the aluminum diff would break before it would rotate the pressed in bonded tube.
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CheddarGau
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Just curious, but did you also re-gear the rear diff when you re-geared the front diff?
How much did the front diff assembly rotate? Can you send pics of the diff assembly and the broken drive shaft? Assuming everything was bolted in properly I'm having hard time seeing how you would get enough movement to break the front drive shaft even with a free spinning axle tube. The front axle shaft is splined to the intermediate shaft, the intermediate shaft is splined to the spider gear, which for simplicity sake is bolted to the case. The pressed in tube acts more as a guide in this particular set up. I believe you would see a fluid leak before movement.
How much did the front diff assembly rotate? Can you send pics of the diff assembly and the broken drive shaft? Assuming everything was bolted in properly I'm having hard time seeing how you would get enough movement to break the front drive shaft even with a free spinning axle tube. The front axle shaft is splined to the intermediate shaft, the intermediate shaft is splined to the spider gear, which for simplicity sake is bolted to the case. The pressed in tube acts more as a guide in this particular set up. I believe you would see a fluid leak before movement.
