Inner Primary Bearing Race - I NEED HELP
Thread Starter
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Elite HDF Member
Joined: Jun 2006
Posts: 3,698
Likes: 11
From: Longview, Washington
Inner Primary Bearing Race - I NEED HELP
I spent 2 hours searching and reading about inner primary bearing failures here on the forum. I found dozens of thread especially in the dyna section. None of them addressed the issue I have. I was hoping someone here has the same problem and could help. Let me explain.
I tore my primary apart due to a new noise I heard that went away when the clutch was pulled in. I found that the inner primary bearing was failing. The picture below shows the failing inner race on the right side. The bearing has three badly pitted rollers.
A friend had the same issue so he sent me the parts list from his repair. I also looked up the parts and ordered them from Chicago HD.
NOW FOR THE PROBLEM . . .
The new race is part # 34091-06 also INA part# F-556923.
The old part does not have an HD # but it does have INA#556923-02. You can see the failure in the picture.
The problem is that the new part slips on the mainshaft by hand. The ID is obviously bigger than the stock part. I used the HD puller to pull the old part off and I can tell you that it was pressed on tightly. The new part is also slightly shorter as you can see in the picture.
MY QUESTIONS . . .
Has anyone had this same issue? Is it possible that HD changed the part to a slip fit rather than a press fit?
I'll post this in the primary section also. Thanks for any help.
I tore my primary apart due to a new noise I heard that went away when the clutch was pulled in. I found that the inner primary bearing was failing. The picture below shows the failing inner race on the right side. The bearing has three badly pitted rollers.
A friend had the same issue so he sent me the parts list from his repair. I also looked up the parts and ordered them from Chicago HD.
NOW FOR THE PROBLEM . . .
The new race is part # 34091-06 also INA part# F-556923.
The old part does not have an HD # but it does have INA#556923-02. You can see the failure in the picture.
The problem is that the new part slips on the mainshaft by hand. The ID is obviously bigger than the stock part. I used the HD puller to pull the old part off and I can tell you that it was pressed on tightly. The new part is also slightly shorter as you can see in the picture.
MY QUESTIONS . . .
Has anyone had this same issue? Is it possible that HD changed the part to a slip fit rather than a press fit?
I'll post this in the primary section also. Thanks for any help.
Last edited by sifularson; Mar 7, 2010 at 05:36 PM.
Thread Starter
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Elite HDF Member
Joined: Jun 2006
Posts: 3,698
Likes: 11
From: Longview, Washington
Dawg,
Good to see you're taking an interest in this.
I've been doing some research. I may have to drive to my dealer and look at the 08 part. I did a search and found that they have one in stock. I'll also call and talk with the service manager before I make the 2 hour drive.
This is holding me up BIG TIME. I have a new chrome inner primary all ready to install but I can't proceed until I get this bearing thing figured out.
Good to see you're taking an interest in this.
I've been doing some research. I may have to drive to my dealer and look at the 08 part. I did a search and found that they have one in stock. I'll also call and talk with the service manager before I make the 2 hour drive.
This is holding me up BIG TIME. I have a new chrome inner primary all ready to install but I can't proceed until I get this bearing thing figured out.
Ultimate HDF Member
Joined: Feb 2007
Posts: 7,663
Likes: 7
From: Northeast Ohio
It is the wrong race, absolutely is not a slip fit. When you get the right one, use some locktite Green for bearings, cant recall the number. Be fastidius about getting it set to the right depth, dont go too far or the next time (hope there isn't a next time) you go to pull it off you will not be able to get the puller jaws behind it.
Outstanding HDF Member
Joined: Mar 2008
Posts: 2,456
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From: PacNW; Beacon of Conservatism in a Sea of Liberals.......AZ Snowbird; Just another Conservative
I'm kinda the "go-to" guy on the IPB problems from the Dyna side. My May '09 thread (Finally - Good News) has most of the wealth of Dyna IPB problem info within it). I don't have the part numbers, nor do I have any experience with Touring IPB issues, though. Lots of the Dyna guys are going with a Baker Heavy Duty Bearing. That p/n is NOT anywhere in my IPB thread. Maybe a search on "Baker bearing" in the Dyna section...good luck.
Thread Starter
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Elite HDF Member
Joined: Jun 2006
Posts: 3,698
Likes: 11
From: Longview, Washington
I'm kinda the "go-to" guy on the IPB problems from the Dyna side. My May '09 thread (Finally - Good News) has most of the wealth of Dyna IPB problem info within it). I don't have the part numbers, nor do I have any experience with Touring IPB issues, though. Lots of the Dyna guys are going with a Baker Heavy Duty Bearing. That p/n is NOT anywhere in my IPB thread. Maybe a search on "Baker bearing" in the Dyna section...good luck.
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Outstanding HDF Member
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From: Washington State
Steve, I heard you were having issues, from your neighbor Steve, how have you been? You should see my bike................. It's in a sad state at the moment, but will be all good soon 
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Thread Starter
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Elite HDF Member
Joined: Jun 2006
Posts: 3,698
Likes: 11
From: Longview, Washington
Frustrating that I can't proceed until I get the correct bearing. Looks like I'll go with a Baker one peice bearing. The stock bearing failed at only 28K.
If you start to hear a growl from your primary, it's probably the same thing. Greg in Portland had his IPB bearing changes also at 30K.
So I heard you're mounting a fairing one yours? What's up with that????
Outstanding HDF Member
Joined: Jul 2006
Posts: 2,876
Likes: 3
From: Washington State
I'm doing fine. My bike is torn to hell from front to back. Installing all the parts I bought over the Winter. New speakers, front running lights, Chrome inner primary, intercom system, etc. etc.
Frustrating that I can't proceed until I get the correct bearing. Looks like I'll go with a Baker one peice bearing. The stock bearing failed at only 28K.
If you start to hear a growl from your primary, it's probably the same thing. Greg in Portland had his IPB bearing changes also at 30K.
So I heard you're mounting a fairing one yours? What's up with that????
Frustrating that I can't proceed until I get the correct bearing. Looks like I'll go with a Baker one peice bearing. The stock bearing failed at only 28K.
If you start to hear a growl from your primary, it's probably the same thing. Greg in Portland had his IPB bearing changes also at 30K.
So I heard you're mounting a fairing one yours? What's up with that????
