Robert 65 Posted March 31, 2020 Report Share Posted March 31, 2020 I have a Montesa 248 Currently in the process of changing the crankshaft seals. I have been able to access the seals on the Magneto side but having problems with the clutch side. I am aware of the possible issues in removing the primary gear but at the moment I am unable to remove the nut on the crankshaft. I know the Magneto end is left hand thread but what thread left or right is the clutch side. I've tried moving it won't move at all Any ideas thank you Quote Link to comment Share on other sites More sharing options...
sparkieb Posted April 1, 2020 Report Share Posted April 1, 2020 Im sure its a normal r/h thread, im going by my 348 which im sure was r/h, as i needed to take the crank weight off when dismantling. ? Quote Link to comment Share on other sites More sharing options...
Robert 65 Posted April 1, 2020 Author Report Share Posted April 1, 2020 Morning Many thanks for your email. Will give it a go. Thank you Quote Link to comment Share on other sites More sharing options...
section swept Posted April 1, 2020 Report Share Posted April 1, 2020 Pneumatic or good electric nut runner usually works. This puts less load on the shaft. Use it to undo only, tighten with torque wrench. Quote Link to comment Share on other sites More sharing options...
Robert 65 Posted April 2, 2020 Author Report Share Posted April 2, 2020 Much appreciated Thank you Best regards Rob Quote Link to comment Share on other sites More sharing options...
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