rocker and half moon gasket

[gamestaffords]

Morning all....
 after spending many hours reading i have come to the conclusion my 1.8t is loosing oil from the rocker gasket but reading on here about a half moon gasket...
now looking at them it says chain tensioner ? i didnt think i had a chain??? anyway can you help??
1,if i change the rocker gasket should i do the half moon?
2,has a AUM got a half moon?
3, how hard of a job is it to change both?
Thanks for reading
Ross

[Mr_Orange]

Aum has a chain between the cams. The half moon is under the chain tensioner. If you have an oil leak at the gearbox side of the head/rocker cover it is almost certainly from around the tensioner gasket. Its not a difficult job, Just takes a bit of time and confidence. There's kits on eBay with the 2 gaskets and necessary tool, however I'd recommend you get genuine gasket and half moon from vw and find a cheap tool and then a how to guide online. Dont forget a drop of blue gasket seal where required.
;-)

[gamestaffords]

yea thats exactly whats happening on mine,, thansk for the reply pal,, this tool? whats it called please and wheres best to find the how to guide
Thanks

[Mr_Orange]

Tool
https://www.toolstoday.co.uk/sealey-petrol-engine-belt-replacement-chain-in-head-service-set-vag-1-8-1-8?gclid=Cj0KEQiA0-GxBRDWsePx0pPtp4sBEiQACuTLNonkUJsAP9yX_EiOy6mFona5qvukiPcDow2Lm06_0UoaAhnu8P8HAQ

How to
http://forums.vwvortex.com/showthread.php?4341168-DIY-How-to-replace-valve-cover-gasket-plus-cam-tensioner-gasket-half-moon-seal

Reminded me you should really replace the valve cover gaskets while you are in there.

Cheers

[gamestaffords]

Thanks pal