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VW MKV-A5 Golf/Jettas Discussions area for A5/MkV Jetta/Golf (2005/2006 PD and 2009 CR).

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Old December 19th, 2019, 21:11   #1
Join Date: May 2010
Location: Eastern WA State
Default Rear main seal leak question

I just noticed that the rear main seal has started leaking in my 1.9 BRM with DSG. How critical is the timeline to replace the RMS? I'd like to wait another 10K miles and do it with the timing belt. I can live with the drip for a while if it's not going to create other issues. Thoughts?

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Old December 20th, 2019, 05:13   #2
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Join Date: Dec 2001
Location: St Louis
Fuel Economy: fantastic

Are you sure it is that leaking? Much more likely to see something from above (like the tandem pump gasket or the tandem pump itself) leak, or the valve cover. Also, I have seen lately that some people have been doing cam jobs with non-OEM cam cap screws which are too narrow to properly index the cam caps so the end one does not seat flush with the head, and they leak oil from there (and it sometimes does not start leaking until some time AFTER the cam job).

But in order to do the rear main seal on the BRM, there is a special install tool as the CKP sensor tone ring is inside the rear seal carrier. People have done it without this tool, but with the tool you cannot screw it up.
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Old December 20th, 2019, 06:45   #3
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Join Date: Jun 2010
Location: North Carolina
TDI(s): 2005.5 Jetta

Obviously one has to pull the transmission to replace the RMS.
What is the mileage on the engine and has the DMF been replaced.
When you check/replace the RMS, now would be a good time for a preventative measure to replace the DMF if it has a lot of miles on it, since it needs to be removed.


There are vendors who will rent the RMS tool, as mentioned it can be done without, but renting the tool makes it a simple straightforward job, the tool
keeps the seal from folding over on itself, and lines up the tone ring.
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