Damaged crankshaft threads

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Sep 12, 2011 | 02:53 PM

#11

2009blackpearle

Road Master

Joined: Dec 2008

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From: Niagara Falls Canada

.012 is spec

think i saw some where in posts once upon a time that run out spec is .012 seems about .0115 too high to me , but Im pretty sure thats harleys mile wide spec for comp end of shaft, I used to work at a factory making drive shaft parts and a half a thou wasnt even good enough for the spec we had,

Sep 12, 2011 | 04:06 PM

#12

djl

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Joined: Jun 2006

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From: san antonio

Quote:

Originally Posted by Biggzed

I rode a friends bike that we measured at .007. mine is at .0045 last check. I couldn't tell a difference between the two bikes.

Zach

Not saying much.. Ride one with .0005 runout and see what you think. But I am happy for both of ya; suggest you keep an eye on the oil pump gerotors and cam plate bushing.

Last edited by djl; Sep 12, 2011 at 04:09 PM.

Sep 12, 2011 | 04:10 PM

#13

Biggzed

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Joined: Dec 2005

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Quote:

Originally Posted by djl

Not saying much. RideHappy for both of ya. Keep an eye on the oil pump and cam plate bushing.

Don't get me wrong. I'm not happy about the runout I have, but I'm also not feeling like I need to yank out the crank and have it worked.

All I was trying to tell the OP was that all is not lost if he comes in at something slightly above .005. I guess it depends on the individuals comfort level.

Zach

Sep 12, 2011 | 04:11 PM

#14

djl

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From: san antonio

Quote:

Originally Posted by 2009blackpearle

The spec for warranty purposes was changed from .003" to .012" in 2007 when the crank assemblies were sourced from a foreign supplier.

Sep 12, 2011 | 07:31 PM

#15

customsoftail200

Thread Starter

Road Master

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From: Simpsonville, SC

I measured the runout and I have about .0045 on the primary side.. Sounds like it should be OK. Now I have to see if the threads can be repaired.

Sep 13, 2011 | 04:26 PM

#16

djl

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From: san antonio

Quote:

Originally Posted by customsoftail200

I measured the runout and I have about .0045 on the primary side.. Sounds like it should be OK. Now I have to see if the threads can be repaired.

I agree with Bigzzed. Wouldn't pul the lower unit and send the crank out to balance and weld for .0045" runout. But I would check it each season or if you should notice a new vibration. If it gets bad enough, it will destroy the oil pump and will cause bad juju to happen to your motor.

Sep 13, 2011 | 05:02 PM

#17

Biggzed

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Joined: Dec 2005

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Quote:

Originally Posted by customsoftail200

I measured the runout and I have about .0045 on the primary side.. Sounds like it should be OK. Now I have to see if the threads can be repaired.

Not trying to be condescending, but was that total indicated runout (TIR where runout on both sides of zero are added together) or was it the max reading you recorded?

The specs djl listed above are TIR.

Zach