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Old 01-17-2012, 09:37 PM
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gary@germanautosolutions gary@germanautosolutions is online now
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Location: Grand Rapids, Michigan
 
Join Date: Jul 2010
Posts: 311
Mein Auto: 528-530 Hybrid, Duc. 748
Oops, I forgot a couple of things. These are the instructions for the replacement seal.


The M54 has the main seal molded into the framework which is why BMW don't offer a replacement O-ring.



The molded in seal needs to be scaped out with small flat blade screwdriver or similar Non-sharp tool that will fit into the groove. After scraping the molded silicone out, you can use a fine-wire stainless steel or brass brush (Harbor Freight) to remove the little remnants. The groove should look like this when you're finished. Be careful not to scratch or gouge the groove. If you are retrofitting a new DISA you can skip this step and keep the new O-ring in stock for a future failure.


Photobucket
Once the groove is cleaned you can install the new O-ring. I squeeze some of the supplied grease onto my fingers, then work the grease onto the surface of the O-ring before installation. This not only helps ease the reinstallation of the DISA into the intake manifold, but also aids in sealing.
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