Finally swapped this CCV housing today. Took about 2 1/2 hours but reckon you could easily do it in around 1 hour. I took my time trying to see how everything works.
Interestingly the pics you see of the old and new housing seals compared side by side is misleading. The inside diameter of the seal on the old one is much bigger than the new one, but this is mostly by design. If you have a closer look, the new one on the inside is wafer thin, whereas the old one on the inside has been folded in around 4-5mm. When you push this onto the end of the camshaft, which is a much bigger diameter than the ID of the seal, the seal actually forms and folds over the end of the camshaft as you push it on.
So I don't know if mine actually did need replacing or not. The seal itself looked to be fine but of course you don't know how close a fit it still is without being able to see inside with it fitted. So anyway new one is now fitted.
I didn't change the PCV, though after researching further this morning and actually having a look at how this all works I will be changing it. I think it's a lot more likely the diaphram in the PCV is the cause of the excess oil in the turbo intake rather than the seal in the CCV housing. I'll get a price on Monday and change it later in the week. This'll only take 15-30mins to change.
I did change the PCV o-ring though. The one on it was hard and flattened, almost more like plastic than rubber when taking it off.
I was going to open the PCV to check the condition of the diaphram but this was going to break the plastic cover to get it off so decided to leave this for now. Will check it though once I replace with a new one.
Final tip. Be careful not to drop any bolts, especially the one towards the middle over the valley lol. Luckily I have a good stash of bolts...
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2006 Jeep Grand Cherokee Limited 3.0lt CRD
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