|
Re: Vibration
In article <d9t80211ndc06k8hl3dpno8coc3h1oqroi@4ax.com>, [email]admin@snoman.com[/email]
says...[color=blue]
>
>
>Have the driveshaft rebalanced.
>
>On Tue, 28 Feb 2006 10:03:19 GMT, [email]jjones_001@yahoo.com[/email] (Jerry) wrote:
>[color=green]
>>A week or so ago my '85 SR5 ExtraCab pickup developed a vibration. The
>>vibration was there at about 55-60 mph. When going slower or faster it
>>was as smooth as ever.
>>Sunday I took a 100 mile trip and by the time I got back home the
>>vibration was there from about 20-70 mph and when I slowed to turn onto[/color][/color]
my[color=blue][color=green]
>>street the vibration had worsened to a definite knock and shook the[/color][/color]
whole[color=blue][color=green]
>>truck.
>>This morning I got under it and I could see that there was about 1/8[/color][/color]
inch[color=blue][color=green]
>>side play in the rear u-joint so I decided that since one had gone bad[/color][/color]
the[color=blue][color=green]
>>other two were probably about ready to be replaced too so I replaced all
>>three of them.
>>This took about 99% of the vibration away but there is still a little[/color][/color]
when[color=blue][color=green]
>>I let off the gas and coast about 55 mph down to about 50.
>>Does anybody have any ideas what could be still causing the vibration?
>>I took the center carrier (with bearing) to a mechanic and he said that[/color][/color]
it[color=blue][color=green]
>>looked okay to him but when I put it back into the truck I could tell[/color][/color]
that[color=blue][color=green]
>>there was a little bit of side play in it; not enough to see but I could[/color][/color]
[color=blue][color=green]
>>feel that it was there.
>>If it is measurable at all I would guess that it couldn't be more than
>>1/32nd in side play. Could this be a cause for vibration?
>>The bearing rolls smoothly and the rubber in the carrier doesn't have[/color][/color]
any[color=blue][color=green]
>>cracks and nothing appears to be broken.
>>If the problem isn't in the carrier where else should I be looking. As[/color][/color]
I[color=blue][color=green]
>>said earlier, I replaced all three u-joints and I hope that it could be
>>something else rather than the carrier.
>>I called around and the price of a new carrier is from about $125 as
>>Schucks to $285 at the local Toyota dealer. I don't want to replace the
>>carrier if I don't have to.
>>Any suggestions???
>>jj[/color][/color]
The driveshaft was fine until the u-joint went bad. Is it probable that
it could be thrown off balance permanently by the bad u-joint? That seems
very unlikely to me but I suppose that it's possible.
Have you ever heard of this being the cause of a driveline going out of
balance?
jj
|
