Senton Diffs problem

1999fd

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Arrma RC's
  1. Senton 3s
My diffs were squeaking bad. Opened them and I find this. It's not gear savings. It's very sticky and wen I touch it melts. What's this?
IMG20221207000414.jpg
IMG20221207000404.jpg
 

Hector_Fisher

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^ It's dirt and grease mix.

The grease eventually gets flung off the gears and sticks onto the insides of the diff housing. Eventually dirt make it's way inside and mixes with the grease. Also gears do wear. There is likely some powdered plastic from the gears in there. It's normal.

You can help prevent dirt ingress by putting grease or thick oil on the edge of the diff housing when snapping them together. This will trap dirt as it's on it's way into the diff housing.
 
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