Wildguzzi.com
General Category => General Discussion => Topic started by: bigbikerrick on October 22, 2022, 10:17:54 PM
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Hello Folks, today I had a leak from my U joint boot on the convert, and I took everything apart, and sure enough there was a 1" tear in the boot.New boot is on order, but I wanted to carefully inspect my U joint and carrier bearing, but the U joint,and driveshaft will not come out of the swing arm easily. What is the trick for getting this apart, from the swing arm tube?
Thanks
Rick D.
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you aren't cursing loud enough
It should come apart quite easily.
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The ujoint is an interference press fit into the carrier bearing…machinist can remove and refit if your not comfortable hitting it with a 20 lb sledge… :shocked:
The uj needs to spin the bearing it’s pushed into and not be loose. If it’s easy to drop out, then likely your scoring and overheating both pieces. After many miles, it can be likely to just fall out. Not good..
Shade tree mechanics devise a tube to hold the uj straight while pushing it in. My impression is you need a real press (machine shop) to get it home. Banging on it can ruin the tinny tiny bearings inside leading to an early demise..
Hold the trans side of the uj while installed and push/pull in all three directions with your fingers..Fore/aft, up/down ,left right…should be zero play. Any hint of movement, replace it. No clicks, snicks, or gaps felt? Leave it alone. If it’s not broke don’t fix it. Replace the torn boot..
Wait another 80k for it to explode! Good luck!
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What Chuck said!
TOMB
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Thank You Guys, taking into consideration what Chuck said, with the bike only having 10K miles, the u joint feels smooth in all directions, with no binding, clicks, or any other "weirdness" that I can tell when examining it as suggested. I think I will not risk damaging the tiny U joint bearings, by attempting removal at this time. I will just replace the boot,swing arm seals, grease and adjust the pins, and re assemble everything.
Kiwi Roy, I was cussing plenty....but in Spanish. Maybe I should try cussing in Italian! :wink:
Thanks again,
Rick D.
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What about the driveshaft? Should'nt that pull out, or drop out easily? I tapped the swingarm flange down against the work bench anticipating it to just drop out, but it did not move.
Rick.
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Remove the rear drive and use a piece of PVC pipe just large enough to slide over the splined shaft, and tap the bearing out of the swingarm.
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drive shaft is part of the carden UJ on a convert, all one item however there is an update but I doubt if you have that on yours. Ray
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Remove the rear drive and use a piece of PVC pipe just large enough to slide over the splined shaft, and tap the bearing out of the swingarm.
Bearing won't come out of the swingarm unless the circlip is first removed...
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The ujoint is an interference press fit into the carrier bearing…machinist can remove and refit if your not comfortable hitting it with a 20 lb sledge… :shocked:
The uj needs to spin the bearing it’s pushed into and not be loose. If it’s easy to drop out, then likely your scoring and overheating both pieces. After many miles, it can be likely to just fall out. Not good..
Shade tree mechanics devise a tube to hold the uj straight while pushing it in. My impression is you need a real press (machine shop) to get it home. Banging on it can ruin the tinny tiny bearings inside leading to an early demise..
Hold the trans side of the uj while installed and push/pull in all three directions with your fingers..Fore/aft, up/down ,left right…should be zero play. Any hint of movement, replace it. No clicks, snicks, or gaps felt? Leave it alone. If it’s not broke don’t fix it. Replace the torn boot..
When I removed my Mille swingarm to repaint the frame (due to brake fluid damage), my U-joint fell out of the bearing. The joint itself didn't have any perceptible play, but it was a little "floppy." When I checked the fit into a new bearing, it fell out of that, too, so the Mille got a new U-joint and a new bearing.
I made a tool from PVC pipe to hold the joint straight while I pressed (not hammered) it into the bearing. I also froze the U-joint and lightly heated the bearing with a heat gun from the final drive end of the tube. In like Flint.
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when I get a sloppy ujoint in a carriew bearing, I make a couple or 3 rows of prick punch dents on the ujoint to inner race surface, and then loctite it in.