HOrnbrod Posted May 13, 2012 Share Posted May 13, 2012 This is nuts. I installed a metal gas tank skid today. To install the nutserts and mount the thing I had to unbolt the drive shaft for and swing it toward the right side for clearance. Didn't even pull it out of the tranny; just laid it gently on the garage floor. Installed the skid, bolted the shaft back up on the diff yoke and went to the store. Getting a pretty good vibration now between 35MPH-45MPH that definitely was NOT there before. I'm not sure if the drive shaft is orientated at the pinion exactly as before; didn't mark it, it may be 180* out. I've never worried about that before, but it's the only thing I can think of. The u-joint cups are fully seated in the pinion yoke and everything looks okay. Any ideas? I hate vibes............ Link to comment Share on other sites More sharing options...
Jeep Driver Posted May 13, 2012 Share Posted May 13, 2012 That's why they say to mark it, but I never had myself and never had a problem. Guess it's time for new joints. Link to comment Share on other sites More sharing options...
jimoshel Posted May 13, 2012 Share Posted May 13, 2012 Remove the shaft, rotate it 180 and hook it back up. See what haps. Personally I suspect one off the cups is not seated properly. Not doubting your eye sight but maybe it's dark under there. Link to comment Share on other sites More sharing options...
HOrnbrod Posted May 13, 2012 Author Share Posted May 13, 2012 Remove the shaft, rotate it 180 and hook it back up. See what haps. Will do mañana Jim. There's always a snag ............. :fs2: Link to comment Share on other sites More sharing options...
1987Comanche Posted May 13, 2012 Share Posted May 13, 2012 I'd vote for worn U-joints. I had a random banging that I traced to a nearly new shock that functioned fine off the truck. Removal and reinstallation in the exact same orientation caused the issue. Sometimes stuff is worn in such that any disturbance upsets the delicate balance. Link to comment Share on other sites More sharing options...
knever3 Posted May 13, 2012 Share Posted May 13, 2012 I feel your pain Don, After I had two driveshafts made I still have a vib at 55mph that drives me nuts!! Let us know what you find out, I would say flip it 180 too, but what do I know? I haven't fixed mine yet! :rotf: Link to comment Share on other sites More sharing options...
Jeep Driver Posted May 13, 2012 Share Posted May 13, 2012 I feel your pain Don, After I had two driveshafts made I still have a vib at 55mph that drives me nuts!! Let us know what you find out, I would say flip it 180 too, but what do I know? I haven't fixed mine yet! :rotf: Who made it? Link to comment Share on other sites More sharing options...
jimoshel Posted May 13, 2012 Share Posted May 13, 2012 There's always the old 'hose clamp trick. Take a hose clamp big enough to wrap around the drive shaft. About a foot from the rear seems to work best.Test drive. Rotate the clamp about 1/2 inch. Test drive. Time consuming and a labourous PITA but it does work. I once had to use two clamps which ended up 45* apart but it solved a vibe problem the drive shaft shop couldn't find or fix. Link to comment Share on other sites More sharing options...
HOrnbrod Posted May 13, 2012 Author Share Posted May 13, 2012 Rotated the shaft 180*, greased up the u-joints, and it's back to normal, no vibes. From now on, the drive shaft will be permanently marked and going back on the same way it came out. Never thought this was that important, but it is. :cheers: Link to comment Share on other sites More sharing options...
jimoshel Posted May 13, 2012 Share Posted May 13, 2012 Did you measure the amount of grease you put in each cup to insure equal amounts? Link to comment Share on other sites More sharing options...
HOrnbrod Posted May 13, 2012 Author Share Posted May 13, 2012 Did you measure the amount of grease you put in each cup to insure equal amounts? Err, no. Just let the grease gun do it's equi-distribution thing. Link to comment Share on other sites More sharing options...
tugalo Posted May 20, 2012 Share Posted May 20, 2012 that hose clamp trick is a NEAT idea!!!! Link to comment Share on other sites More sharing options...
Alexia Posted May 20, 2012 Share Posted May 20, 2012 Rotated the shaft 180*, greased up the u-joints, and it's back to normal, no vibes. From now on, the drive shaft will be permanently marked and going back on the same way it came out. Never thought this was that important, but it is. :cheers: Not necessarily important on new parts. On old shafts the U-Joints will wear in orientation to the parts it is hooked up to. I had the same problem on my Wrangler with the old shaft, but not with the new one. Link to comment Share on other sites More sharing options...
HOrnbrod Posted May 20, 2012 Author Share Posted May 20, 2012 Not necessarily important on new parts. On old shafts the U-Joints will wear in orientation to the parts it is hooked up to. I had the same problem on my Wrangler with the old shaft, but not with the new one. I doubt there were more than 5K miles on the old u-joints. But they were not Dana Spicer. I've ordered two new Spicer Series 5-153X 1310 joints and will be installing next week. Link to comment Share on other sites More sharing options...
carnuck Posted June 7, 2012 Share Posted June 7, 2012 hand grease each cap. Bet you're going to find wear marks on the shaft of the old ones. Link to comment Share on other sites More sharing options...
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