RMS Install

[Baconaire]

My clutch is starting to slip so I have assembled the part to replace the clutch, pressure plate etc, Luk FLywheel in case. I also expect to find a leaking RMS as I have a little oil in the right place.

I have the RMS seal. I have seen the special tool, but could a DIYer replace the RMS without it? Or am I best just leaving it in place if its not leaking badly?

Thanks. I'm studying up for this.

[White987S]

Baconaire, you will need the tool. And it is a good idea to replace the RMS when doing the clutch. Good decision. Possibly an indy shop will "rent" the tool to you.

[Tool Pants]

There are other places for oil to leak back there.

Keep in mind Porsche has changed the design of the seal several time (4 times I recall) and Porsche has changed the installation tool about 3 times. The tool changed to change the depth of the seal inside the bore. Based on my failing memory the current version of the tool sets the seal a bit deeper into the bore. But then after the last version of this tool came out Porsche came out with the 4th generation seal, the one with the 997 part number. Then Porsche came out with insert for use with the tool.

There are aftermarket tools, but I do not know how deep they set the seal.

This guy did it without the tool. Note what he says. If you have replace other seals on other vehicles you push/tap them in until the are seated. There is no stop for the RMS seal. You can push it in too far. He set the seal flush. Also note this article is old as he used the 3rd generation seal.

http://www.c-speedracing.com/howto/996rms/rms4.php

The current generation seal comes with a green plastic instillation ring. This ring helps you to slide the seal over the end of the crankshaft without damaging the lip of the seal. I spoke to Peter and there is no spec as to how deep to set the seal as that is determined by the tool. He guessed 5 mm. He also said the depth of the seal is not so important with the 4th generation seal as it was with the prior generations.

Never replace the RMS myself, but watched them being replaced. Looks easy if you have the right tools.

[Baconaire]

I got an RMS from Pelican. Its non-porsche but I trust Pelican. It came with a plastic ring which should help with the instalation. I think I should be able to get it on with patience and I will leave it a little proud of level, I think. If I have to I'll try to find something at home depot, like a pvc pipe of the proper diameter to help. But I haven't cracked the trans yet. Nothing is as easy as it seems.

Broke one header bolt on each side. Luckily I have about 3/8 protruding. Once I get those out its back to the clutch.

[Tool Pants]

There is a picture of the latest generation seal here.

http://www.renntech.org/forums/index.php?s...pic=15&st=0

[Baconaire]

I got a 4inch PVC connector and endcap for a couple of bucks. I'll smoot it a little and I can even drill holes in it to use the flywheel bolts to slowly and evenly bring it down. Along with the sleeve that came with seal, it looks like it will work. I will report back if I ever get that triple square bolt loose.

[kbrandsma]

I got a 4inch PVC connector and endcap for a couple of bucks. I'll smoot it a little and I can even drill holes in it to use the flywheel bolts to slowly and evenly bring it down. Along with the sleeve that came with seal, it looks like it will work. I will report back if I ever get that triple square bolt loose.

How did the 4" PVC connector and end cap work? Any pictures?

Thanks!

K. Brandsma

'98 Porsche

[Baconaire]

Haven't gotten into the bell housing yet. I don't have a garage and at the end of November called it quits until spring. I do think the PVC parts will work. I'm glad I stopped becuase not being patient and sending the old RMS into the crankcase would be even more trouble.

I should be back at it in a few weeks and will report back.

[graham]

Hi,

I have accomplished this completely on my own without any special tools,although i am a competant DIY mechanic have a look at thedetailed procedure under RMS replacement on Boxa.net

Regards Graham

[catmanluge]

I went stop a machine shop and had a tool made out of aluminium for $12.00. It places the seal 13MM from the crank end.. :renntech:

[kbrandsma]

That's exactly what I did as well. Do you have any pictures?

Here is a link to a recent post on 986Forum

Edited April 7, 2008 by kbrandsma