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-   -   Breaking flywheels.. (http://www.dieselram.com/showthread.php?t=203318)

smokediver 11-07-2019 10:08 AM

Breaking flywheels..
 
Buddy of mine has an '04 dually, auto, 2wd, all stock far as I know, got a service bed on it and tows a 16 ft trailer from time to time.
He does carpenter work and remodeling on the side.

It has cracked 3 flywheels in about a year!
The last one didn't last 3 months and they claimed they put a heavier one in it the 2nd time.
He was asking me what causes this constant problem.
I told him I figured either something isn't lined up correctly, or there's a vibration somewhere.
The tranny was supposedly rebuilt not long before he got it.
He's had the truck less than 2 years.
Don't know how many miles were put on the rebuild before he got it..

Any words of wisdom as to how or why that I could pass on to him?
Thanks.

pullinforme 11-09-2019 08:17 AM

new? oem? NAPA/ Autzone? sounds weird be nice to hear the answer

cougar 11-09-2019 08:51 AM

My 1st question would be was it breaking flex plates before it was overhauled. If it was, I'd say there was a misalignment issue from the factory. Crank shaft, adapter plate, or transmission. If after, I'd be looking at the transmission. Particularly the input shaft and bearing, and/or the torque converter.

MAXTORQ 11-15-2019 07:49 PM

Flywheel or flexplate?

Clunk 11-17-2019 09:43 PM

Auto., flexplate.

smokediver 11-19-2019 09:04 AM

Yes, "flexplate"..

MAXTORQ 11-20-2019 09:36 PM

Quote:

Originally Posted by smokediver (Post 1933909)
Yes, "flexplate"..


If he has busted that many then check the crankshaft end play. Probably has a bad thrust bearing.

smokediver 11-25-2019 04:16 PM

Thanks MAX, I'll pass that along.


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