SJ vibration

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djc
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SJ vibration

Post by djc » Sat May 28, 2016 7:48 am

Any ideas please - I am getting a rough vibration under acceleration and decelleration (so when engine is under most load I suppose), mostly in mid rev range. I can feel it through the steering and hear it too.
Engine mounts look fine / solid. I'm guessing it is caused by dodgy mounting somewhere along the engine / gearbox/transfer case area? If it was prop shafts it would not be rev dependent (my guess) - it runs smooth and good at steady speeds.

Had a new clutch with bearing a few miles ago, so it won't be that.

Any ideas where to start looking and how to check?
Thanks all, as usual ;)
Straight n shiny '85 410 soft top.

Douglas

SherwoodNash
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Re: SJ vibration

Post by SherwoodNash » Sat May 28, 2016 8:57 am

Did you notice the same issue before the new clutch was fitted?

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djc
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Re: SJ vibration

Post by djc » Sun May 29, 2016 8:35 am

No Sherwood, but I fitted the clutch (well, Andy did, I 'helped') as soon as I got it. I'm fairly sure this is a new thing. It feels like it is mounts somewhere along the drivetrain - but in that case how do I check them when they aren't under load.
Straight n shiny '85 410 soft top.

Douglas

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ScottieJ
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Re: SJ vibration

Post by ScottieJ » Sun May 29, 2016 10:13 am

You need to remove engine mounts to check them.

The transmission mounts can be checked just using a pry bar.

It could be a UJ on one of the props. Again I find it best to unbolt to check these. If a UJ has gone dry and started to seize you won't be able to tell with it still bolted up.
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djc
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Re: SJ vibration

Post by djc » Sun May 29, 2016 7:37 pm

Thanks Scottie - i need to have a proper crawl around ;)
Straight n shiny '85 410 soft top.

Douglas

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