Changing spider gears on a 2007 8.8 - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 07-06-2012
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Changing spider gears on a 2007 8.8

Can they be changed fairly ease aftertakig off the plate cover? Where can I get a good set besides at the dealer?

I did a search but wasn't to helpful.
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Old 07-06-2012
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You can get gears just about anywhere. And being the questions you asked I wouldn't attempt them yourself. Gears are a touchy item and you can waste a lot of money if you don't know what your doing.
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Old 07-06-2012
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Spider gears can be done without much work depending on if you have a limited slip differential or an open. If its open you need to pop the diff cover off, slid the center pin out that retains the spider gears and replace them with new ones. Chances are though of the spiders are bad the side gears will be too so check them while youre in there. If you have a limited slip the process is a bit more involved but still pretty easy depending on your skill set.
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Old 07-06-2012
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Done seen the the other gears and they look goor. How do I tell the difference between open and limited slip? I'm off to google now!

Thanks for the help.
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Old 07-06-2012
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An open diff looks like this


The limited slip looks like this


Not the large wavy spring in the limited slip carrier. The side gears are different and retain clutch packs behind them.
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Changing spider gears on a 2007 8.8-diffparts.jpg   Changing spider gears on a 2007 8.8-116_0705_04_z-ford_8.8_rear_end-traction_lok_limited_slip.jpg  
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Old 07-06-2012
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I have limited slip. Do the axles have to be pulled to replace the spider gears?
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Old 07-06-2012
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Quote:
Originally Posted by digger658 View Post
I have limited slip. Do the axles have to be pulled to replace the spider gears?
To do the spiders no, to do the side gears yes. Both can be done with the the diff carrier still in the truck BTW.
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Old 07-06-2012
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Why are you changing the spider gears?
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Old 07-07-2012
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They had some wear and a few chips on the outer edge (peaks).
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