 Problem during needle bearing install..., ovalled pivot tube; wtf do I do now?!? |
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| ss6 |
 Mar 20 2004, 03:28 PM
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fun city...  Group: Members Posts: 261 Joined: 2-February 03 From: Western Connecticut Member No.: 221  |
Got a set of Mueller's nifty suspension bearings, pressed the bearing tube into the trailing arm (BF threaded rod and a LOT of elbow grease), proceeded to test fit the bearings. Fits fine on the outboard end, but the inboard end won't accept the bearing.
Measured the tube ID, and found a slight oval, ie 1.318 - 1.338. The bearing OD that has to fit in there is 1.330. So will the bearing tolerate this or am I going to have to go find a machine shop??? |
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| Doug Leggins |
Mar 20 2004, 04:21 PM
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Senior Member Group: Benefactors Posts: 1,358 Joined: 6-February 03 From: Nashville, Indiana Member No.: 261 Region Association: None 
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The oval condition seems to be common. I talked to Mike before installing my bearings. I took the approach of machining/sanding the OD of the sleeve prior to installing it. I think that if you do not sand the OD then you will have to sand the ID to get the bearing to fit properly.
If you use too much force to try to insert it, the bearing can/will come apart. I used a 1" drum sanding attachment in a drill to get the sanding done that I needed. The 1" drum was recommended. Mike lists his cell number on his site. I used it a few times just to make sure I was doing things right. |
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| ChrisFoley |
Mar 20 2004, 06:20 PM
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I am Tangerine Racing Group: Members Posts: 7,964 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None 
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That's why I ream the trailing arms before installing the delrin bushings. The trailing arms are all out of round at the inner end.
Sorry I'm no help to you John. (IMG:style_emoticons/default/smash.gif) |
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| fiid |
Mar 20 2004, 08:49 PM
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#4
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Turbo Megasquirted Subaru Member Group: Members Posts: 2,827 Joined: 7-April 03 From: San Francisco, CA Member No.: 530 Region Association: Northern California |
One of my tubes was mushroomed from beating it in ( (IMG:style_emoticons/default/smash.gif) ). I just used a drum sander with the dremel until the bearing fit easily.
My advice with the bearing kit is: DON'T FORCE IT. Don't hit anything to hard, - just keep sanding till it fits snug, and only tap lightly with a plastic hammer. Anything else and you are out of round. Same thing with the sleeves that go over the A-Arms - heat them gently and consistently (oven is best) and then slide them on - if you have to beat them on - they are probably going to be out of round. Out of round = bad. |
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| J P Stein |
Mar 20 2004, 10:08 PM
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#5
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Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
I'm with Chris.....tho I haven't got a reamer.
Round up the swing arm ID before installing the tube. I used a die grinder and ....various abrasive attachments. The biggest problem is at the outer ID due to the welding in close proximity. The tube then goes in with a couple shots with a 60 OZ persuader (IMG:style_emoticons/default/smash.gif) ....& hardwood block & grease. I got these IDs close enuff that the bearings dropped into the tube. Primered the ODs of the brgs & IDs of the tube and installed wet. |
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