Re: Bummer- more vibration woes

["Chance & Rachael Welch" <welch@domain.elided>]

Not to scare You J but it sounds like what happened with my 91 full size
Blazer. It was doing the same thing on the Freeway after a wheelin trip in
the Panamints and my TC exploded and my rear shaft thumped the piss out of
the under side of my body tub! Scared the shit out of my wife since I was in
the fast lane doing about 75 when it happened. Does the hum get steadily
louder?
-----Original Message-----
From: J Staub <jstaub@domain.elided>
To: ihc-digest@domain.elided <ihc-digest@domain.elided>
Date: Friday, April 16, 1999 11:16 AM
Subject: Bummer- more vibration woes


>Well, this weekend I replaced the inner and outer bearings, the inner axle
>shaft bearings, the front wheel u-joints AND the front axle u-joints on my
>'79 Scout II. It certainly smoothed everything out- for a while. Today was
>the first day I really had it out for a long run and I hit a bump and the
>confounded intermittent vibration returned. This time it was back with a
>vengence! I've always wanted to be a mover and a shaker but this is
>obnoxious. You can feel the whole truck vibrate, but it's not an big
>shaking, more like a rough hum. It wouldn't stop on its own, even after
>repeated stops. I then put it into 4 hi with the wheels unlocked and it did
>not return. I put it back into 2 hi and yep, it happened again right away.
>The rear axle shaft U-joints are also brand new. I haven't replaced the
rear
>bearings, but I would swear the vibration is right beneath my feet. Can
>anyone tell if I should be tearing into the front differential or the
>transfer case next? Other than feeling for loose shaft play, are there any
>other checks how will I tell if anything needs replaced? Finally, if anyone
>has experience rebuilding differentials or transfer cases, I would
>appreciate any info on the size of the job, special tools required, and
>cost.
>
>Also, if anyone is considering replacing their front bearings I could give
a
>few tips. The first side took me 7 hours to figure out (including 3 trips
to
>the auto parts store) and the second side took 1 hour. Textbook learning
>curve, huh?
>
>TIA for any help,
>
>John Staub
>
>
>