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YOUR RESEARCHRMS - lubricate crank or not?
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Your confusion is due to the fact that you�re just replacing the RMS, not building the engine.
The ambiguity comes from the conflicting information in the early Porsche manual that as you point out, states to lubricate the crank, but then contradicts itself by stating the micro sealing
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Suggestion · Original poster
I'm struggling to find a definite answer as to whether I'm supposed to lubricate the the crank.
The ambiguity comes from the conflicting information in the early Porsche manual that as you point out, states to lubricate the crank, but then contradicts itself by stating the micro sealing
Lubricate crank, not the lip� once again, pretty clear�
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Suggestion
Lubricate the crank, not the lip� once again, pretty clear�
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Suggestion · Original poster
Then it immediately says not to lubricate the micro sealing lip.
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Suggestion
Your confusion is due to the fact that you�re just replacing the RMS, not building the engine.
The ambiguity comes from the conflicting information in the early Porsche manual that as you point out, states to lubricate the crank, but then contradicts itself by stating the micro sealing
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I'm struggling to find a definite answer as to whether I'm supposed to lubricate the the crank.
The workshop manual isnt very clear, or I'm being stupid....
So, just so I understand it - it says to lubricate the crank. Got it.
Then it immediately says not to lubricate the micro sealing lip.
Am I being thick here?
Or is the inner lip not the micro sealing lip?
Pretty clear - �Do not touch or lubricatate the sealing ring�. Your confusion is due to the fact that you�re just replacing the RMS, not building the engine. Don�t over think it! Good luck
Forgive me, I'm comfortable with the outer part being dry.
But immediately after stating to lube the crank, it says to not lubricate the micro sealing lip.
The micro sealing lip is the part that seals against the crank, right?
If so, it appears to contradict.
How can it not be lubricated if it's sliding on to a lubricated crank?
EDIT: Found the source of confusion - Porsche manual is old data referring to the old type of seal. Later Bentley manual does not mention lubing crank.
I'm going in dry.
The
outer diameter
is the part that seats into the engine seal bore in the case halves. Not the inner' lip that rides/seals on the crank. The out diameter' has a rubber/silicone coating like many seals do, so no need for any sealer there.
I've installed hundreds of seals and never once installed the lip (that rides/seals on a journal/shaft) dry. In fact installing a seal lip dry is a sure way for seal failure/low seal life.
I'd at the least oil the 'inner' seal lip assembly sleeve or grease it, and do the same for the areas of the crank it rides on...
Thanks both, for the avoidance of doubt, there is no question about the outer ring that seals against the case. This is just about the inner micro lip.
The ambiguity comes from the conflicting information in the early Porsche manual that as you point out, states to lubricate the crank, but then contradicts itself by stating the micro sealing
lip
must not be touch by hand nor lubricated. You can see how this is confusing. Lubricate the crank but don't lubricate the lip, doesn't make sense.
The Bentley manual states in the first CAUTION text box "Make sure the crankshaft end flange is dry and thoroughly clean
Do not oil."
(Ignore the yellow arrow, this was on the image I lifted already)
I've since found quite a few Youtube videos showing the later seal and insertion tool and none of them lube the crank, is this a thing with the revised later PTFE seals with the blue insertion guide ring go in dry.
EDIT: They're PTFE and self lubricating. I should've worked that out earlier.
This is a source reference. Confirm exact model applicability in the original material.
