Tips and advice please for IMS bearing replacement - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Viper10000 · 02-06-2015, 01:57 PM

So, just to update where I am at...

Old bearing removed and new bearing installed. The LN tool was amazing at extracting the bearing. Came out very smooth with little effort. The install was a little nerve racking but I managed to get it done and the new clip installed. I just need to put the cover on and begin re-assembly. I still need to clean up the ims cover and put a new seal on it, but after that cover is back on and the chain tensioners are re-installed, I will feel a lot better. Then the next step is the RMS. I brought the new seal with me to Home Depot and matched it up with a 3 inch pvc coupling. It fit over the seal very nicely.

As a side note, the bearing that came out of the engine felt great and no sloppiness to it. It did look like however that some grease was on the outside of the seal. There was almost no oil in the ims but I removed what was there with a shop vac.

Jamesp · 02-06-2015, 03:22 PM

One of my rebuild secrets revealed. When re-installing the IMSB cover, I put a bead of sealant on the outboard side of the seal on the cover. That way when installing the cover, the sealant is pushed towards the outside of the engine, but still forms a complete seal at the IMS cover.

Viper10000 · 02-06-2015, 03:27 PM

I put some Curil T on my list if things to order and I just got it recently. I'll be using that for the seal on the cover and I think also around the heads of the bolts for the ims cover. I need to read the project again in Wayne's book and the LN instructions. So far I am pleased with the project and hopefully I can keep chipping away at it and get it done before the weather gets nice!

Jamesp · 02-06-2015, 09:41 PM

Thread sealer is recommended for the IMSB cover bolts. You can get it at the auto parts store. It goes on the threads, not just under the bolt heads.

Viper10000 · 02-07-2015, 04:54 AM

The new micro encapsulated bolts already have the sealant on them. The LN instructions say to use a little sealant on the bottoms of the heads of the bolts. They also say to use the green loctite on the center stud after the nut is installed. I need to go pick up some of the green loctite.

As for the RMS, I've read something about setting it to 13mm. Does this sound right?