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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
RM250 Right Crank Seal Removal
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[QUOTE="Bunya, post: 1211233, member: 77196"] I'd lean towards improper install of the bearings also. Those bearings aren't a press fit in the case, they're an interference fit which is a couple thou tighter. I froze my bearings and oven heated my cases and they were still pretty tight going in. The cases are very thin to reduce weight and are easily cracked. Seizure at high speed would make the bearing spin, and even then the crank would normally spin in the bearing, not the bearing in the case due to the interference fit. In order to produce the crack(s), an outward force would have been required and I can't see any mode of bearing failure capable of producing the axial force required to break the casting. [/QUOTE]
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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
RM250 Right Crank Seal Removal
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