Removing output shaft pilot bearing (bushing)

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marrstree
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Removing output shaft pilot bearing (bushing)

Postby marrstree » Sun Jul 24, 2011 7:17 pm

As a first-timer, I read this forum for how to extract the brass pilot bushing. Since I didn't have a 3/4 tap, as suggested, I tried a different approach and it worked.
I had an automotive bodywork dent puller. It is a slide hammer wiTh a threaded end. I found a mating bolt, connected it with a nut, and with only very slight grinding of the bolt hex head corners it slipped right into the bushing. I just caught the backup edge of the bushing with the bolt head (moving it around a bit) and pulled it right out with just a few hammers. Might not work for one really stuck, but worked for me.
Gevan
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Re: Removing output shaft pilot bearing (bushing)

Postby Don McCombs » Sun Jul 24, 2011 7:56 pm

This sounds like a good Tip of the Week. What say you, Rudi?
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marrstree
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Re: Removing output shaft pilot bearing (bushing)

Postby marrstree » Sun Jul 24, 2011 10:50 pm

Here is a photo with the bushing extracted still on the "backwards" nut.

Image
Gevan
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tccanoe
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Re: Removing output shaft pilot bearing (bushing)

Postby tccanoe » Tue Jul 26, 2011 11:22 am

I've tried everything I can think of. Taped it, blue flamed it, cussed it. Could you show me a close-up photo of your slide hammer set-up? I'm slow off the mark but I would like to give it a try. Tanks.

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Re: Removing output shaft pilot bearing (bushing)

Postby Rudi » Tue Jul 26, 2011 11:24 am

Don:

Yup, sounds like a good tip of the week :idea: :!: Re: Cub Tip of the Week! July 26th, 2011
Confusion breeds Discussion which breeds Knowledge which breeds Confidence which breeds Friendship


marrstree
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Re: Removing output shaft pilot bearing (bushing)

Postby marrstree » Tue Jul 26, 2011 7:10 pm

Per request here are some additional photos and detail on the method.
Dent puller as sold:
Image
Arrangement of the removable tip:
Image
Tip removed, matching bolt (5/16" by 1 1/2" hex head and nut) and the extracted pilot bushing for comparison:
Image
Hex bolt head didn't quite fit until the corners of the hex were lightly ground.
https://lh5.googleusercontent.com/--mhiFXYJAY4/Ti9XEr3743I/AAAAAAAAH-c/DeXSvDKm1Zs/s640/4%252520P1020099.JPG
Note that the bolt must be at least 1.5 " so that the head lops over the edge of the bushing before the nut hits the leading edge:
Image
After pulling it out. Note how the hex head catches the back edge of the bushing. Because it has to slip inside, it only grabs one edge at any time, so I moved it around as I hammered it out so that the bushing wouldn't get cocked.
Image
Closeup showing the rounded hex shoulders to get it into the bore.
Image

Hope that helps.

Gevan
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Puyallup, WA


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