keychange Posted February 14, 2012 Report Share Posted February 14, 2012 I have just received my new tapered bearings and now I look at the old setup I am not entirely sure where to begin. Does anyone have any diagramatic instructions on a similar type of bike. I know I need to chill the small bits and warm the big bits. I have the old bearings out but I am not sure of best way to remove the lower races from the stem. I ordered the parts from Pyramid and great fast service but I also wonder if any spacers may be required etc or will the replacement just fit straight on. All advice welcome. Quote Link to comment Share on other sites More sharing options...
keychange Posted February 15, 2012 Author Report Share Posted February 15, 2012 There is a cup around the base of the tree - I am worried about damaging this - or does it come off as well. My parts diagrams shows nothing Quote Link to comment Share on other sites More sharing options...
mrb505 Posted February 15, 2012 Report Share Posted February 15, 2012 There is a cup around the base of the tree - I am worried about damaging this - or does it come off as well. My parts diagrams shows nothing Hi Andrew, On Bultaco's I heat the bottom clamp around where the stem fits in then knock the stem out suppose it would work on a Montesa as well Cheers Ross Quote Link to comment Share on other sites More sharing options...
keychange Posted February 15, 2012 Author Report Share Posted February 15, 2012 Hi Andrew, On Bultaco's I heat the bottom clamp around where the stem fits in then knock the stem out suppose it would work on a Montesa as well Cheers Ross Spot on Ross - thanks for that - now to get the blasted lower race out of the frame ... there is about 1 mm of bearing surface to work on Quote Link to comment Share on other sites More sharing options...
woody Posted February 15, 2012 Report Share Posted February 15, 2012 (edited) Assuming you bought the same size as I did when I replaced them in a 247 and MH349 they are a straight replacement, no spacers needed. edit: can't remember the size as too long ago. Edited February 15, 2012 by Woody Quote Link to comment Share on other sites More sharing options...
keychange Posted February 15, 2012 Author Report Share Posted February 15, 2012 (edited) Two hours to remove old bearing and 10 minutes to fit new ones - thank Gott I don't have to do that too often. Edited February 15, 2012 by keychange Quote Link to comment Share on other sites More sharing options...
ikb Posted February 15, 2012 Report Share Posted February 15, 2012 Is it a conversion from loose ball bearings to tapered roller bearings you have fitted?? If so I wonder if there is a kit for my Cota 200?? Ian Quote Link to comment Share on other sites More sharing options...
keychange Posted February 15, 2012 Author Report Share Posted February 15, 2012 Is it a conversion from loose ball bearings to tapered roller bearings you have fitted?? If so I wonder if there is a kit for my Cota 200?? Ian Yes it is a conversion to tapered - I got mine from http://www.pyramidparts.co.uk/ tell them year and model and they appear to have a good handle on what takes what - and their service is great. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.