proper Posted February 20, 2017 Author Report Share Posted February 20, 2017 Edit: The new roller bearing will be mounted on a new shaft, welded in. Quote Link to comment Share on other sites More sharing options...
Ralphy Posted February 24, 2017 Report Share Posted February 24, 2017 On 21 February 2017 at 6:07 AM, proper said: Edit: The new roller bearing will be mounted on a new shaft, welded in. Hi there have the same problem with my exhaust rocker (same bike 2011) do you have any info on the size of bearing and shaft Quote Link to comment Share on other sites More sharing options...
proper Posted February 24, 2017 Author Report Share Posted February 24, 2017 (edited) I haven't come around removing the cam needle bearing axle. First thought was to drill it out, but I'll try to just grind away the welds, and try to press to axle out, saving me the work to source a new shaft. Bearing dimensions appear to be 7mm shaft, 16mm Outer diameter, 6mm width. Bear (...) with me: A quick search did not reveil any replacement bearing. Unobtainium? Hopefully there's some designation left on the old bearing. Edited February 24, 2017 by proper Quote Link to comment Share on other sites More sharing options...
proper Posted February 24, 2017 Author Report Share Posted February 24, 2017 There's an update on the valves too. I increased compression force on the Clamp way beyond my comfort zone, and the half bits popped loose from the stem, covering half the workshop floor. Retrieved both. (Pfew!!!) There's quite some carbon deposits on the valves. Mating surfaces also have spots of carbon. Time for some valve lapping... Quote Link to comment Share on other sites More sharing options...
Ralphy Posted February 25, 2017 Report Share Posted February 25, 2017 Hi there have taken roller bearing out of rocker there is no numbers or anything to help find a replacement Quote Link to comment Share on other sites More sharing options...
copemech Posted February 26, 2017 Report Share Posted February 26, 2017 Do Sherco not sell the parts for this or are you just not liking the price.? Quote Link to comment Share on other sites More sharing options...
Ralphy Posted February 26, 2017 Report Share Posted February 26, 2017 Hi there sherco sell the whole rocker arm at two hundred Aus dollars just seems a little expensive for what it is especially for what looks like could be a common problem Quote Link to comment Share on other sites More sharing options...
Ralphy Posted February 27, 2017 Report Share Posted February 27, 2017 On 26 February 2017 at 2:46 PM, Ralphy said: Hi there sherco sell the whole rocker arm at two hundred Aus dollars just seems a little expensive for what it is especially for what looks like could be a common problem Have been to two bearing suppliers today both informed me it's a special made for the bike , by sherco or for sherco it's a shame they could not make the bearing easily replaceable instead of buying the whole rocker arm looks like a common problem but only on the exhaust side ,maybe something to do with decompression Quote Link to comment Share on other sites More sharing options...
proper Posted March 1, 2017 Author Report Share Posted March 1, 2017 I've grinded the welds on the rocker arm, but haven't been able to get the shaft out. Need the big bench press. Got all the valves out. I found out my compression clamp works fine, but the half nuts seem to stick on the stem. A tap with the hammer before compression helps a lot. The head and valves have been cleaned of carbon deposits using ordinary paint stripper. This stuff works wonders on carbon, and doesn't eat the steel. Before: After: I needs another go, tomorrow. The exhaust valves have thick deposits, needing multiple treatments. Quote Link to comment Share on other sites More sharing options...
proper Posted March 3, 2017 Author Report Share Posted March 3, 2017 (edited) Cleaned the exhaust valves using a wire wheel on the Dremel: Cleaned the ports using the same method: Lapped the valves: The valves and springs are back in. Edited March 3, 2017 by proper Quote Link to comment Share on other sites More sharing options...
lars1990 Posted March 8, 2017 Report Share Posted March 8, 2017 (edited) Cool to see your blog. This is my old bike, good to see it's still alive. Owned it between 2008 - 2010. (It's a 2008 model, not 2009 btw) If you want any info about it, just ask. The bike has quite some history and did back then a lot of small mods to improve the bike. Edit: Yes, I changed the carb after a few months to a sps version. Trottle response is so much better with the SPS carb, compared to the normal version. Edited March 8, 2017 by lars1990 Quote Link to comment Share on other sites More sharing options...
proper Posted March 8, 2017 Author Report Share Posted March 8, 2017 What can I say? Welcome! It's a small, small world. Thanks for acknowledging the model year! We were right after all about the SPS mods. So far no questions. I'm going steady but slow. No need to rush. Received the M31x1 machine tap. Looks like a good quality item. Quote Link to comment Share on other sites More sharing options...
lars1990 Posted March 8, 2017 Report Share Posted March 8, 2017 Good luck! This is how the motorcycle looked like in 2008: 1 Quote Link to comment Share on other sites More sharing options...
proper Posted March 8, 2017 Author Report Share Posted March 8, 2017 That's a real bonus! Thanks! Seeing that pic, I just know I'm gonna curse the day that engine has to get back in the frame....It's a tight squeeze. Quote Link to comment Share on other sites More sharing options...
proper Posted March 16, 2017 Author Report Share Posted March 16, 2017 Here's the disassembled exhaust rocker. Pressed the shaft right out. Shaft diameter: 6,4mm Needle diameter: 1,4mm Roller inner diameter: 9,4mm The shaft is the only part showing signs of wear. And that wear is on one side only. Quote Link to comment Share on other sites More sharing options...
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