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[ultrafxr]

Bike in to have head gaskets replaced and D&Ss installed in prep for our upcoming Posse Ride.  Just spoke to the tech
who gave me bad news.  My crank runout is .038" while spec is .003".  This is first dealer has seen on 110" motor.

Question - can they pull a motor from stock to replace this?  I know the cases have a serial number that must match my bike.  When is the serial number put on engine case?  Reason is because I'm up against a deadline to get on the road next week.  If I have to wait for motor to be assembeled what with model year changeover I have a big problem.

[Chief]

Bike in to have head gaskets replaced and D&Ss installed in prep for our upcoming Posse Ride.  Just spoke to the tech
who gave me bad news.  My crank runout is .038" while spec is .003".  This is first dealer has seen on 110" motor.

Question - can they pull a motor from stock to replace this?  I know the cases have a serial number that must match my bike.  When is the serial number put on engine case?  Reason is because I'm up against a deadline to get on the road next week.  If I have to wait for motor to be assembeled what with model year changeover I have a big problem.

Jerry,

That's a real bummer. I hope you can get it all resolved very quickly. Best of luck.

[Hoist!]

Bike in to have head gaskets replaced and D&Ss installed in prep for our upcoming Posse Ride.  Just spoke to the tech
who gave me bad news.  My crank runout is .038" while spec is .003".  This is first dealer has seen on 110" motor.

Question - can they pull a motor from stock to replace this?  I know the cases have a serial number that must match my bike.  When is the serial number put on engine case?  Reason is because I'm up against a deadline to get on the road next week.  If I have to wait for motor to be assembeled what with model year changeover I have a big problem.

I can't friggin believe it Jerry! Man, that sucks. I'm dreading getting mine measured next week. Yes the cases have to be numbered for your bike. But if a rep authorizes replacement, they should be able to expedite it. Unless everything happens right away,and your dealer gets cracking, unfortunately I doubt you'll see it turned around in a week. Will they give you a loaner bike? You'll have to add the trailer hitch to that, which they might not allow. Man, what a bummer! I wish you luck my friend. I'd be riding their asses right now to have any shot at getting it done immediately. Good luck and keep us informed.

Hoist!

[ultrafxr]

I'd noticed a slight vibration in the 2,600 to 2,800 rpm range or thereabouts for quite a while.  Not significant but could tell it was there.  Due no doubt to the excessive runout.  Tech said he was not aware of motor replacement and said standard procedure was to order crank and replace.  But I'm not sure I'm comfortable with that.  Might be quicker.  What do you guys think?

[Fired00d]

I'd noticed a slight vibration in the 2,600 to 2,800 rpm range or thereabouts for quite a while.  Not significant but could tell it was there.  Due no doubt to the excessive runout.  Tech said he was not aware of motor replacement and said standard procedure was to order crank and replace.  But I'm not sure I'm comfortable with that.  Might be quicker.  What do you guys think?

See if they'll allow you to upgrade to Timken Bearing and weld/balance the crank at your expense. Since they are in there that would be the best long term fix if it could be done quickly.

 
Ride Safe,
Fired00d
 

[ultrafxr]

I can't friggin believe it Jerry! Man, that sucks. I'm dreading getting mine measured next week. Yes the cases have to be numbered for your bike. But if a rep authorizes replacement, they should be able to expedite it. Unless everything happens right away,and your dealer gets cracking, unfortunately I doubt you'll see it turned around in a week. Will they give you a loaner bike? You'll have to add the trailer hitch to that, which they might not allow. Man, what a bummer! I wish you luck my friend. I'd be riding their asses right now to have any shot at getting it done immediately. Good luck and keep us informed.

Hoist!

Haven't inquired but would not want to head out on trip this long with a loaner.  Mine is setup the way I want it, E-Z everything on pedals, levers; Traxxion front end; trailer hitch; gps mount; etc, etc, etc.  We'll just have to expedite as possible and jump into the ride whenever we can.  Planned to get to Wilmington on Friday, July 13th (maybe THAT is the problem, lol).  Swearing in of the Posse is Sunday the 15th so if we can make that it will be OK.

[Hoist!]

If they'll allow that, and they know what they're doing, I'd go the Timkin route too. If they won't do the Timkin, I'd demand a new engine! Hoist!

[Kodiak]

 My bike started vibrating in the 2700 to 2900 rpm range. Been that way for the last 600 miles. It's due in for 5000 mile service. No leaks showing up yet, but how do I get my dealer to check crank runout. What work has to be done? If it's in spec I'm sure they will charge for the work. I feel sure the vibration is in the engine. Should crank runout be the place to start checking the cause of the vibration? It does it in any gear at same rpms.

[Rooster]

Bike in to have head gaskets replaced and D&Ss installed in prep for our upcoming Posse Ride.  Just spoke to the tech
who gave me bad news.  My crank runout is .038" while spec is .003".  This is first dealer has seen on 110" motor.

Question - can they pull a motor from stock to replace this?  I know the cases have a serial number that must match my bike.  When is the serial number put on engine case?  Reason is because I'm up against a deadline to get on the road next week.  If I have to wait for motor to be assembeled what with model year changeover I have a big problem.

Jerry, mine was just measured just under .006 dealer said no adjust or replacement as tolerance is two thousands - 10 thou going to check mine again next year if it gets worse will tear it down and do the whole job.

[ultrafxr]

My bike started vibrating in the 2700 to 2900 rpm range. Been that way for the last 600 miles. It's due in for 5000 mile service. No leaks showing up yet, but how do I get my dealer to check crank runout. What work has to be done? If it's in spec I'm sure they will charge for the work. I feel sure the vibration is in the engine. Should crank runout be the place to start checking the cause of the vibration? It does it in any gear at same rpms.

No expert but this is what I suspected on mine after hearing about the bad cranks.  I think you can check it at either end - if on cam side must pull cam support plate, if on sprocket side think must pull compensator.  Sure those more knowledgeable will correct me if I am wrong.

[hogasm]

See if they'll allow you to upgrade to Timken Bearing and weld/balance the crank at your expense. Since they are in there that would be the best long term fix if it could be done quickly.

 
Ride Safe,
Fired00d
 

Gary, all the bad cranks that I have seen have gotten new motors, and not rebuild the origional one.

[grc]

Jerry, mine was just measured just under .006 dealer said no adjust or replacement as tolerance is two thousands - 10 thou going to check mine again next year if it gets worse will tear it down and do the whole job.

Rooster,

That tolerance your dealer gave you is somewhat bogus.  First, on something like runout there is no minimum number, minimum runout is zero.  Second, unless they made a huge change between '06 and '07, the maximum crankshaft runout specified in their own shop manuals is 0.003", anything over that calls for replacement.  If anyone has the '07 shop manual, please verify the '07 spec, Section 3, Engine, Crankshaft Runout.

Jerry

[Hoist!]

Rooster,

That tolerance your dealer gave you is somewhat bogus.  First, on something like runout there is no minimum number, minimum runout is zero.  Second, unless they made a huge change between '06 and '07, the maximum crankshaft runout specified in their own shop manuals is 0.003", anything over that calls for replacement.  If anyone has the '07 shop manual, please verify the '07 spec, Section 3, Engine, Crankshaft Runout.

Jerry

Jerry, you're 100% correct. Per the '07 SERK SM Supplement, Table 3-12 Crankshaft Runout is 0.0"-0.003"; Table 3-22 Replace if Crank Runout is more than 0.003". Interesting that we're only hearing of replacements at 0.008" and above! Hoist!

[Chief]

Jerry, you're 100% correct. Per the '07 SERK SM Supplement, Table 3-12 Crankshaft Runout is 0.0"-0.003"; Table 3-22 Replace if Crank Runout is more than 0.003". Interesting that we're only hearing of replacements at 0.008" and above! Hoist!

You guys are really getting me nervous, almost to the point of starting to pull pieces off to check it.

[ultrafxr]

Jerry, you're 100% correct. Per the '07 SERK SM Supplement, Table 3-12 Crankshaft Runout is 0.0"-0.003"; Table 3-22 Replace if Crank Runout is more than 0.003". Interesting that we're only hearing of replacements at 0.008" and above! Hoist!

That is what the tech told me also, .003".   That is a long way form .038" that mine read.  Is this only with the 110s?  What, if anything, if different about them from the 96s other than the motor can produce more torque.  Tech told me he'd seen 113s built with same bottom end with no problem.  So just can't understand if this is an inherent design flaw/deficiency, a mfg problem with parts not being to spec, or some type of assembly problem.  Only reason is as has been asked before - can it happen again or has problem been rectified.