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#1
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Attention: Dipstick Guide Tube N62
While doing the job, I had an issue with my dipstick guide tube, and I thought it was just me. Now, after the dust has settled, another member - Johnny_5 - has the same issue with the dipstick guide I had, and he thinks that this might be another cause of the smoking issue. Here is the issue nobody mentioned a thing about it. The dipstick guide tube for the N62 engine is made out of 2 tubes: a lower & upper tube. They mate together just below the VCG level. The lower dipstick guide has some sort of a plastic guide where the upper dipstick guide mates. When doing the VCG, one has the tendency to push the dipstick away, rather hard. I know I did. What nobody tells you, is the fact that that plastic nipple will degrade in time and will break. Mine disintegrated like chewing gum. Also, when tackling the VCG, one should ROTATE the upper guide very GENTLY. I know this now, after the lower guide was wrecked. My contribution was being probably a bit hard on it when pushing it aside (instead of rotating it). If that nipple/guide breaks, You're in for a new lower dipstick guide, which is a royal PITA to change. Here is what you need to do, in case it breaks:
Now study the layout. Very carefully. Then, get your hands and by feel see how you can remove the 8mm nylock that holds the plate, which in turn secures the lower dipstick. You have either visual, but you can't work, or you lose visual, but now your hands are in there. Very, very tight, but doable. Once the 8mm nylock is out, the lower dipstick can be removed. Below the plate that holds the dipstick is a thick aluminum securing washer. Inside the oil pan guide where the dipstick stays, is the O-ring. Make sure you don't lose the washer. If you plan on changing the O-ring, the lower oil pan has to come out, otherwise you will NEVER replace that O-ring. It's pretty hard to remove it, and to install it back on is even harder. You cannot install it the "traditional" way - by mounting it on the dipstick and wedge it in there. The guide of the oil pan has minimal clearance for the dipstick guide, it has a groove where the O-ring seats, and if mounted on the dipstick, it will never get squished in that small orifice to be pushed in the groove. Maybe someone will realize this lower dipstick design shortcoming and will build a better one? A new one will last only as long as the old one - the plastic will deteriorate after so many hot/cold cycles. This post is mainly a FYI, in case one does the VCG and wonders why the dipstick is so sloppy. here's the realoem sketch (P.S.: the realoem sketch does NOT show the nipple on the lower dipstick guide - the one that breaks):
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Stable: e92is, e46 M54B25, e83 N52, e53 N62 - sold, e39 M54B30 R.I.P. |
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#2
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God and I thought installing my cold weather version dipstick guide tube for my M54 when I did the CCV was tough enough.
Another reason to be happy not to have a V8.
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2018 Ram 2500 6.7L Cummins 68RFE 19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed 2013 X5 35D (CEO's) - Born on 5/17/2013 - 82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards |
#3
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I just found out myself that the bottom tube contact to the upper tube is broken off and the top half was silicone on so trying to tackle this replacement myself but with limited space in the garage. Knowing how much of a pain this was going to be I would have just left the X outside!!! Pretty dumb design where you have to remove the oil just to remove a damn dipstick tube!
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#4
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How does the upper guide come off?
I see a part for an o-ring as well. I noticed the bottom half of the dip stick was caked in oil so I'm thinking it's leaking where it joins together. Also a failed connection between the upper and lower guide tube cause a vacuum leak?
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2005 Imola 4.8iS |
#5
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Quote:
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2004 X5 4.4i 202k on odometer |
#6
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The o-ring that meets the bottom half to the upper half if that fails would it cause an oil leak? Does the oil travel up that far when crankcase is pressurized?
I noticed while doing other stuff down there only the bottom half of the tube was wet with oil.
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2005 Imola 4.8iS |
#7
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If your talking about oring at the bottom near the pan yes. If your talking about the middle joining piece no. It’s possible it could be the valve cover gasket.
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2004 X5 4.4i 202k on odometer |
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