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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc. |
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#1
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Powervalve bearings question
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?
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WildAzzRacing YouTube channel Trail Riders of Southern AZ club AZ State Parks OHV Ambassador '11 EC250R '98 KDX220 |
#2
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I always put the sealed side towards the piston. Just to keep carbon bits out of the bearing.
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#3
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So no official way? OK. Well, your logic sounds good to me. Did you have one or two bearings?
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WildAzzRacing YouTube channel Trail Riders of Southern AZ club AZ State Parks OHV Ambassador '11 EC250R '98 KDX220 |
#4
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Anyone, 1 or 2 bearings?
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WildAzzRacing YouTube channel Trail Riders of Southern AZ club AZ State Parks OHV Ambassador '11 EC250R '98 KDX220 |
#5
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How'd they come out? Put them back in the same way..
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#6
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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.
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WildAzzRacing YouTube channel Trail Riders of Southern AZ club AZ State Parks OHV Ambassador '11 EC250R '98 KDX220 |
#7
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I used open bearings on all of mine. Runs fine so far! I would say open side towards piston, that spooge is good lube!
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2006 EC300 Enduro - Ignitech CDI - 38/NECW#2/165 FMF gnarly, FMF shorty, .50 front 5.7 rear 2016 RM-Z450 |
#8
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I see. I'd definitely run two bearings on it. I wish I had a picture to confirm how they went.
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#9
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The left side takes two bearings, the right side has a bearing and a bushing.
http://www.gasgasrider.org/pv_disassembly_mattr.pdf |
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