Vanos outer 8mm hex nut very tight!

Z

Zikim

Active member
Started work on the Vanos seals today - starting to wish I hadn't!

Now up to the outer Vanos 8mm hex nut and the first is extremely tight - it feels like it will shear or even the Vanos itself will go.

Any advice from anyone who has done it? It this normal?
 
Are you following Beisan instructions?

You mean these hex caps?

http://www.beisansystems.com/procedures/vanos_procedure_files/image027.jpg

I did open those with stubby allen key & half meter pipe for more torque. Those hex caps are torqued to 50nm, so you have to have some power for opening.

This kind of tool:

http://www.crawfordtool.com/bondhus_16599.html
 
Like this one would be perfect;
http://www.ebay.com/itm/BGS-Tools-8mm-Hex-Impact-Socket-Rear-Brake-Calipers-Very-Short-Audi-A4-A6-A8-499-/291198974673

Otherwise you cannot tight it to right tightness
 
jaq03 said:
Like this one would be perfect;
http://www.ebay.com/itm/BGS-Tools-8mm-Hex-Impact-Socket-Rear-Brake-Calipers-Very-Short-Audi-A4-A6-A8-499-/291198974673

Otherwise you cannot tight it to right tightness
Click to expand...
Wish I had seen this a few days ago it would have been ideal.

I ended up using a 8mm hex sump plug from halfrauds that I could get a 19mm ring spanner around and finally both cracked open. :D

Had to stop bad light stopped play. At the point of removing the Vanos and will have to remove the radiator hose to move the sensor out of the way. I have pulled the metal/spring retainer and hose will not move at this moment. :headbang: I'm wondering if this pipe will turn slightly to move the sensor just far enough to the side for the Vanos to slide past it (it only needs to move by about 4mm.

I don't think it will clear the studs and I will have to try and remove the offending right hand stud.
 
As I said on my PM, give me a shout if your need any advice or get stuck and I'll give you some motivation :thumbsup:

The sensor on the hose might be in the way, and you can remove it but I just undid the hose from the thermostat as it was easier (but messier). You can't twist the hose as it only locks in place one way. You should be able to unclip the metal lock and then just pull the hose down and away.
 
First remove coolant sensor, approx 1 liter will coolant will drain out. Catch it with little ice cream case or similar. Then unclip bottom rad hose from thermosthat housing, if it is stuck.. play and viggle it little bit. Old o-ring can be stuck sometimes.

small.jpg


Ps. do you have 90 degree angled pliers ready? You will need those.

Any more help just ask. :P
 
Pretty impressive doing this work yourselves, lads. If there's one day in the calendar not to overdo it, it must be today... Good luck!
 
AnttiO said:
First remove coolant sensor, approx 1 liter will coolant will drain out. Catch it with little ice cream case or similar. Then unclip bottom rad hose from thermosthat housing, if it is stuck.. play and viggle it little bit. Old o-ring can be stuck sometimes.

small.jpg
Click to expand...
I have disconnected the electrical connection to this sensor but where is the sensor that you refer to in "remove coolant sensor, approx 1 liter will coolant will drain out" ? I was going just to disconnect the hose and let the coolant come out, is this right?
 
It is like this, just press and pull.

Be sure you renew that o-ring to avoid leak later, part number 13621743299

pic04.jpg
 
AnttiO said:
It is like this, just press and pull.

Be sure you renew that o-ring to avoid leak later, part number 13621743299
Click to expand...
Is this the sensor that I have removed the electrical connector to, which is the same sensor that the Vanos fouls when trying to take it off?
 
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