WRC Posted February 23, 2009 Share Posted February 23, 2009 Got worried that the spring might fail on my 02 LeMans so I purchased a new one from MG Parts and opened up the side cover. Once apart I noticed that the original spring was free and loose on the boss, great news. I measured the boss and it is 16mm in diameter. I measured the new spring and it has an ID of approximately 17mm, just like the original one. Lots of info on filing down the old boss or ordering a new one with the 15mm boss. Looks like Moto Guzzi or MG Parts has made sure the new spring fits a 15mm or a 16mm boss. Anyway thought I would toss this info out there. I believe in all the threads there may have been some mention of the larger ID spring, not sure. This is just what I found yesterday. Now I feel comfortable riding the bike on long trips, at least the spring won't be a mental issue. BobC Link to comment Share on other sites More sharing options...
Greg Field Posted February 23, 2009 Share Posted February 23, 2009 You'd be wise to turn down the boss to 15mm, or get the one that has a 15mm boss. Link to comment Share on other sites More sharing options...
belfastguzzi Posted February 24, 2009 Share Posted February 24, 2009 I measured the new spring and it has an ID of approximately 17mm, just like the original one. Lots of info on filing down the old boss or ordering a new one with the 15mm boss. Looks like Moto Guzzi or MG Parts has made sure the new spring fits a 15mm or a 16mm boss. Thanks. Yes, it was noted at some point in the past threads that MG eventually changed the coil size of the spring, presumably to accommodate the bigger boss that somehow appeared for a while around 2002 and who knows, perhaps at other times since that. Link to comment Share on other sites More sharing options...
Baldini Posted February 24, 2009 Share Posted February 24, 2009 ...I noticed that the original spring was free and loose on the boss, great news. ..... Did you check spring wasn't binding or near binding at furthest extent of pawl arm travel? KB Link to comment Share on other sites More sharing options...
Garsdad Posted March 2, 2009 Share Posted March 2, 2009 My replacement spring had more clearance on the big boss than the stock spring would have had on a 15mm boss, so I left it alone. So far, so good... Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now