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Coaster brake not engaging

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Coaster brake not engaging

Old 11-13-19, 03:30 PM
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Coaster brake not engaging

I have a SRAM i-Motion 3 Speed coaster brake hub, supposedly maintenance - free, bought with a Dahon Vitesse folding bike in 2013. It still shifts perfectly, after 6 1/2 years and less than 4000 miles, but for the last few months sometimes the brake does not engage until I reverse - pedal for about half a rotation. Very unpredictable. Sram CS says it could be hardened oil residue; maybe replacing the oil would fix it. Is that the most likely problem?
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