79 fj40 rear axle lateral movement in spider gears. Normal? (1 Viewer)

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Jun 22, 2018
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Richmond, Virginia
I uploaded this video to YouTube to show the lateral movement my rear axle (long side) has in the spider gears and C clip. Is this normal? There were no metal shaving in the diff fluid to indicate wear in the axle or spider gears. Short axle side does not have this movement in it. please Advise.
 

Mtntopper

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Aug 9, 2020
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Vail, CO
That looks about how mine were when I was in there. There needs to be enough play that when you take out that center block, the axles move inbound enough to remove the "c" clip.
 

pb4ugo

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spay-lay-wi-theepi, Ohio
There should be a spec in the FSM on how much play there should be. It's adjusted by different thickness side gear thrust washers. Its probably about about right.
 

Steamer

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I believe the pinion shaft spacer (center block) thickness controls the gap/play that you show. The side gear thrust washers, control the backlash of the differential gears.
 
Last edited:
Joined
Jun 22, 2018
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Location
Richmond, Virginia
20210602_181419.jpg

Found the info. I will post an update to what I find soon. I appreciate y'all helping out.
 
Joined
May 11, 2002
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790
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twin cities
Looks like my 1978.

intersetingly mine had no thrust washers and it was a tight fit to get the spacer back in


Also. Although not exactly related mine did not have a crush sleeve and was using shims
 

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