Jointer Bearing Replacement

dusty · Post by **dusty** » Mon Apr 13, 2009 5:18 pm

ldh wrote:Dusty,
I just took a look at my fence and quadrant on my jointer and I think the crescent is part of those assemblies. I think the quadrant moves on that crescent. I don't see it in the parts diagram so it may be part of the fence. Are there any holes in the crescent to attach it with bolts? Take the quadrant off the rail and check it.
ldh

Yes, idh, it (the crescent shaped part) rides in a groove in the quadrant and appears to be pinned in place on the fence with two taper pins.

I talked to Jan and Linda and have learned that it is not available as a repair part nor are the pins that hold it in place.

These are intended to show how the quadrant and the fence mate with the crescent part incorporated.

[ATTACH]3938[/ATTACH]

[ATTACH]3939[/ATTACH]

[ATTACH]3940[/ATTACH]

[ATTACH]3941[/ATTACH]
The crescent part should be permanently affixed to the fence.

[ATTACH]3942[/ATTACH]
The quadrant and the fence mate with the crescent part functioning like a trunnion.

The fence, the pins and the crescent part are all part of one assembly. The crescent part and the pins are not maintenance parts and therefore are not available for purchase from Shopsmith. If I cannot make this work, the only alternative is to buy a new fence with the crescent premanently attached.

I shall make it work!

beeg · Post by **beeg** » Mon Apr 13, 2009 5:28 pm

I DIDN'T want to do it. But for Dusty I did. Took my fence apart and that piece goes between the quadrant and the fence. You'll find a grove in the quadrant that it rides in and two posts that it fits on.

I now see ya found where it goes. Super glue the pins back in.

dusty · Post by **dusty** » Mon Apr 13, 2009 5:41 pm

beeg wrote:I DIDN'T want to do it. But for Dusty I did. Took my fence apart and that piece goes between the quadrant and the fence. You'll find a grove in the quadrant that it rides in and two posts that it fits on.

I now see ya found where it goes. Super glue the pins back in.

Thank you, Bob. We both came to the same general conclusion about the same time.

I am contemplating making the crescent, two pins and fence all into one permanent part, as shown in my forth photo, since that is the way they function.

beeg · Post by **beeg** » Mon Apr 13, 2009 6:05 pm

Now that you have it all apart, it would be a good time to clean and wax it. May as well take the infield table off and wax the slides too.

ldh · Post by **ldh** » Mon Apr 13, 2009 6:08 pm

Dusty,
Since the crescent piece is captured between the fence and the quadrant I don't think you would have never noticed any problem until you completely removed the quadrant, therefor any simple technique to hold the pins in place should work. You might try just giving the pins a good whack with a hammer to flatten them just a bit then careful drive them back into the fence casting. I suppose you could get fancy and thread the holes in the casting and use small flat allen head bolts, but this probably like most problems with the SS equipment we tend to over think it. KISS as SS did.
ldh

charlese · Post by **charlese** » Mon Apr 13, 2009 6:08 pm

Nice going guys! And Bob (beeg) went the extra mile!

Whew! glad that one is over!

dusty · Post by **dusty** » Mon Apr 13, 2009 10:00 pm

I started out to change bearings and got side tracked to the fence and quadrant.

The quadrant is all fixed. I found in my junk, two soft metal pins (I think they are a type of rivet) that fits the holes. A little of of careful tapping and I have them secure.

Like as has been said, once reassembled them are captured. That one is history.

The bearings on the cutter head are something else again. I have gotten one off but the other has me whupped. I can't get it off. Can't get a good hold on it with my puller. Gotta find a machine shop that will pull it for me.

It's a good thing I don't have any hot project in work.

dusty · Post by **dusty** » Tue Apr 14, 2009 10:16 am

dusty wrote:I started out to change bearings and got side tracked to the fence and quadrant.

The quadrant is all fixed. I found in my junk, two soft metal pins (I think they are a type of rivet) that fits the holes. A little of of careful tapping and I have them secure.

Like as has been said, once reassembled them are captured. That one is history.

The bearings on the cutter head are something else again. I have gotten one off but the other has me whupped. I can't get it off. Can't get a good hold on it with my puller. Gotta find a machine shop that will pull it for me.

It's a good thing I don't have any hot project in work.

I probably should not say this but I think the hard part is over. I have finally gotten both bearings removed from the cutter head. This is definitely a job for someone with the proper bearing removal tools.

The bearings are positioned very close to the cutter housing and therefore make it very hard to work with. There are tools to do the job but they don't exist in the typical woodshop (at least not mine).

Finally, with the use of some inappropriate tools that, I have the bearings removed. I think I shall wise up and hunt a shop that is properly equipped to press the new ones on.

[ATTACH]3943[/ATTACH][ATTACH]3944[/ATTACH][ATTACH]3945[/ATTACH]

Notice that I removed the wedges and cutter blades. I did not do it soon enough though. I nicked a corner on one blade so these will have to be sharpened. I could forego that but I won't.

Let this be a lesson! Short cuts are often the long way to the finish line!

charlese · Post by **charlese** » Tue Apr 14, 2009 8:48 pm

dusty wrote:... I nicked a corner on one blade so these will have to be sharpened. I could forego that but I won't.

Let this be a lesson! Short cuts are often the long way to the finish line!

Nicked corner? Seems if it is an inside corner, it can wait for sharpening. I almost never use the inside corner of the jointer blades. An outside corner is entirely a different case.

dusty · Post by **dusty** » Thu Apr 16, 2009 9:45 am

did not solve the problem.

I have to replace the cutter head. The shaft is bent. I don't know how it got bent but it is and I don't believe it was part of the original problem.

:o

It will have to wait for awhile. Budget does not allow for immediate replacement. I'll have to sharpen some hand tools or make heavier use of the conical sander.