August 28, 200619 yr Hi, I am rebuilding a MontesaCota 350 and have a problem getting the primary drive gear off the crank...it simply wont come off. The nut on the weighted flywheel seemed to be overtightened and now the gear is a bear to deal with. I have messed up a brand new extractor...any ideas??
August 28, 200619 yr If you are talking about a 348 or 349 Cota, the primary pinion is on a taper and yes it takes quite a bit of force to get it off. Finger type universal pullers are not strong enough. I made a simple tubular puller which worked a treat. If you need help with how to make a puller, let me know.
August 28, 200619 yr Yup been there. Large industrial puller, gas flame and someone who doesn't care very much for life.
August 29, 200619 yr Author If you are talking about a 348 or 349 Cota, the primary pinion is on a taper and yes it takes quite a bit of force to get it off. Finger type universal pullers are not strong enough. I made a simple tubular puller which worked a treat. If you need help with how to make a puller, let me know. Ya, I would be interested in seeing the puller, the nut on the weighted flywheel was over torque, i am rebuilding three engines at the moment, 2 348 and the 350, the 348's have gone smoothly, but i've had nothing but problems with the 350...this gear is on very, very tight.
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