Powervalve bearings question

[SS109]

Trying to get my '04 EC250 powervalve assembly back together. When I disassembled it the left side sub-valve had only one bearing with the sealed side towards the sub-valve. Now, I only have the '05 manual but it shows two bearings (ME25616032) on that side. I have the two bearings that fit that came in the bearing kit I purchased. So...

Do I need two bearings on the left side? Also, as one side on each one is sealed, how do I orientate them? (1)Sealed sides towards engine, (2) away from engine, (3) centered together (seal to seal), or (4) sealed on the outside of each bearing?

 

[gasgasman]

I always put the sealed side towards the piston. Just to keep carbon bits out of the bearing.

 

[SS109]

So no official way? OK. Well, your logic sounds good to me. Did you have one or two bearings?

 

[SS109]

Anyone, 1 or 2 bearings?

 

[Jakobi]

How'd they come out? Put them back in the same way..

 

[SS109]

The left side had only one bearing, however, the manual shows there should be two there. I could see it being a problem with only one bearing as it takes two bearings to keep it aligned with the transfer port and held in place with the retaining bolt.

 

[motopsycho87]

I used open bearings on all of mine. Runs fine so far! I would say open side towards piston, that spooge is good lube!

 

[Jakobi]

I see. I'd definitely run two bearings on it. I wish I had a picture to confirm how they went.

 

[gasgasman]

The left side takes two bearings, the right side has a bearing and a bushing.

http://www.gasgasrider.org/pv_disassembly_mattr.pdf

 

[gasgasman]

 

[SS109]

Thank you for confirming the use of two bearings!