Rotary Engine Failure Discussion Discussion Of causes, diagnosis and prevention of engine failures

Odd bearing failure

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Old 01-21-2008, 06:46 PM
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Car came in with an oil leak, a friend of mine had already replaced the rear main seal, so we had a hunch there was a bigger problem. The rear main was definitely not leaking, it appeared to be coming through the key way and then through the threads on the flywheel nut. Upon closer inspection I found the flywheel had been wearing against the rear main bearing. The rear main bearing was also trashed, but only one half of it. I couldn't even put this stationary gear/bearing back into the motor, checked on a spare shaft and it wouldn't slide on either. I didn't check endplay, or tear the rest of the motor down. Hes going to try and get a warranty from the shop, its only got 3k on it. I figured it was an endplay problem, then then led to the oil leak which probably ruined the bearing. Appears someone used a chisel to replaced the pilot bearing, so pretty sloppy. Sad thing is I have another vehicle here with similar engine damage from the same company. Anyways a few people wanted to see the pictures, just though I would share with everyone else.
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Old 03-26-2008, 02:09 PM
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whoa thats a weird one
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Old 04-25-2008, 10:00 AM
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Someone has assembled the front needle bearing and plates wrong and the crank is too far forward
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