VCU Repair

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has anyone ever found one with no drive at all due to buggerd vc?

Yes

Mondo

hence the term "Mondo mode" meaning FWD only, however it has been used primarily to describe the removal of the VCU which has the same effect.

I understand that Freelander spares remove all the Silicone fluid to achieve the same thing.
 
Brakes are designed to be fully servicable whereas the vcu is a sealed unit therefore not designed to be servicable - so tamper with it at your own risk - best left to the experts who would be fully responsible if their reconditioned vcu failed and caused an accident.

What kind of accident would that be then?
 
How do you interpret.... " He said that if you went above an 86% fill then you would have the VC activating on the highway during normal driving and a dangerous situation would exist" ?? quoted from the link below

Syncro Vanagon Technica


read it again!!!!!
It was stated that ...
"The percentage of air in the viscous couling is critical, and the percentage is almost always a low of 80% and a high of 86%. ...........He said the probable range for our vehicles is 84% to 86% air".

Thats a lot of air, and very little liquid :confused:
 
read it again!!!!!
It was stated that ...
"The percentage of air in the viscous couling is critical, and the percentage is almost always a low of 80% and a high of 86%. ...........He said the probable range for our vehicles is 84% to 86% air".

Thats a lot of air, and very little liquid :confused:
I dont have to read it again, I was answering a quote from bukko - If you tamper with a vcu that is not designed to be tampered with and you get it wrong then as your link expert says a dangerous situation can occur - in my honest opinion vcu's are best left for the experts ;)
 
I dont have to read it again, I was answering a quote from bukko - If you tamper with a vcu that is not designed to be tampered with and you get it wrong then as your link expert says a dangerous situation can occur - in my honest opinion vcu's are best left for the experts ;)


yu are entitled to your opinion.
 
read it again!!!!!
It was stated that ...
"The percentage of air in the viscous couling is critical, and the percentage is almost always a low of 80% and a high of 86%. ...........He said the probable range for our vehicles is 84% to 86% air".

Thats a lot of air, and very little liquid :confused:

I'm not sure that's correct!! As he also said for an off road vehicle an 86% fill would be better. Then he mentions a 14% air space which is all rather contradictory!!
14% air sounds rite to me with my limited knowledge of a VC
 
TBH why even consider a DIY repair on a buggered VCU, it's not exactly an expensive item to replace in comparison to the cost incurred by IRD failure if you got it wrong is it? ;)
 
TBH why even consider a DIY repair on a buggered VCU, it's not exactly an expensive item to replace in comparison to the cost incurred by IRD failure if you got it wrong is it? ;)

Agreed ;) treat the VCU as a service part and change it at 60K or 5 years and kiss good by to all the worry not changing it gives!!
 
If someone were to come up with a test for the vcu then we could all do the test on our vcu's, collate the results and be able to predict when failure occurs if a pattern develops.
 
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