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Chris727

Differential Removal

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Chris727

I noticed the differential on my 3410 was rotating on the axle tube as if the keys were worn. I removed the right rear wheel and hub/gear combination. I removed the snap ring which retains the inner gear on the solid rear axle. I thought the diff would now come off the axle and tube completely. It is not coming off. I don't believe there is anything else holding it and it moves on the axle tube but only 1/8th inch. Do I need to find a puller or am I overlooking something? I have tried the "get a bigger hammer" theory with no resolution. I am wondering if the key or the inner hub of the differential has a burr on it preventing the unit from sliding off? The manual suggests removing the entire rear axle to remove the diff.

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rokon2813

I just pulled one last night. I've done several.

I find it easier to pull the diff off the hub. Take the 8 center nuts off, tap the bolts out 1 at a time, then put them back in from the top.

Then you can pull the diff off without it falling apart inside.

After that you can see what is causing the hub to hang up. There is usually a flat washer behind the inner gear that rocks a bit and catches on the shaft.

If it has been rotating, it has probably worn a burr on the shaft or keys and you will be able to see it.

Then I tap the hub off with a small hammer.

For some reason, every time I do one, I half remember and expect another snap ring behind the inner gear, but it has not been there. I do mainly B series, but maybe another model has it, or it's my imagination.

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