My Viscous Coupling Video

Just giving a crude test on my new VCU to ensure I didnt get a siezed one...hmm, kinda looks ok to me?

http://www.youtube.com/embed/qgjovIq4YEQ

Did yu do the tests outlined on this forum?
If so what are your results?

The torque test isn't a conclusive test and many say it's a load of bs.

The Mad Hat Man said:

Did yu do the tests outlined on this forum?
If so what are your results?

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I rushed today, will make up weight/pole this weekend and re-post.

It is a brand new VCU and I just wanted to see if they had fotted a siezed one due to the new whining noise im experiencing from the IRD area now this has been fitted.
Old VCU is on the bench, will test/video that too this weekend hopefully,

Doesn't look seized to me mate, note how the two u joints turn at different rates suggesting that the plates in the viscous fluid are not locked

RichM said:

The torque test isn't a conclusive test and many say it's a load of bs.

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Do you know of a better definitive test?
It might not be perfect (or even accurate) but its the best we got at the mo........ unless you know a better test!

Probably a stupid question but have you both rears off the ground or just one

just one, I asked the same thing, you dont want to turn the other wheel

yep, just jack one side up only! leave in first gear with handbrake off!

Ok thanks

p.s not with ye engine on either

joe27979 said:

p.s not with ye engine on either

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Made me chuckle that did

Have y'all seen this ?

Symptoms - Bell Engineering

Harleydee said:

Have y'all seen this ?

Symptoms - Bell Engineering

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yeah - general concensus is its bollix - scaremongering so yu get them to check yo VCU. Tests arent conclusive, but they are good indicators and therefore worth doing regularly.

Basically wot they is saying is "you cant do any tests to see if yo VCU is buggered - come to us to have it checked"

bell engineering text is bollocks you can test viscous isnt siezed by turning rear wheel or tip ex test it is siezed or not ,the torque thats neede to turn it maybe debatable but ive checked new ones with torque wrench and stop watch and they vary, i was told in the 90s when working on borg warners with viscous couplings that as long as they moved they should give differential as unless siezed they would lock the more torque you put through them we asked for specific figures and they said they didnt have any ie siezd or not

Hi
If you have to leave in first gear to do test how do you test with auto box.
Thanks.

Ramjet said:

Hi
If you have to leave in first gear to do test how do you test with auto box.
Thanks.

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Don't need to put it in gear. Just chock one ground wheel to stop it rolling. Hand brake off.

put auto in park.