Joined Nov 2001
17K Posts | 774+
Ely, England
right fellas
had to replace all the gearbox bearings and was stumped initially on the output bearing. that to you folks is the one behing the 'front sprocket'.
it's a roller bearing in which the inner race can flop out the bearing and leave all the rollers dangling there.
having removed the oil seal i noted that there was no outer race shoulder to give a 'whallop' too! so i phoned my dealer and he reckoned (struggling) that hed welded rods etc to it to get it removed in the past (gulp!) so i was a bit shook up at this.
on careful observation i noted that a 12mm (1/2") chisel could be pushed into the gap twixt the alloy of the cases and the inner race, resting on the rollers and ready to go.
to stop the rollers falling out, i put the inner race back in and placed something inside the cases on the bench that would only allow it to fall a few mm out. this way the rollers stayed put.
i slipped the 12mm chisel into the gap and did what i do best which is to hit things really hard. the bearing came out as easy as ABC. i changed that something below the bearing after a coupla hits for 'something else' (which is something completely different!) and kept drifting the bearing into the cases.
so don't panic if you can't see how you're going to get the bearing out.
regards
Taffy
had to replace all the gearbox bearings and was stumped initially on the output bearing. that to you folks is the one behing the 'front sprocket'.
it's a roller bearing in which the inner race can flop out the bearing and leave all the rollers dangling there.
having removed the oil seal i noted that there was no outer race shoulder to give a 'whallop' too! so i phoned my dealer and he reckoned (struggling) that hed welded rods etc to it to get it removed in the past (gulp!) so i was a bit shook up at this.
on careful observation i noted that a 12mm (1/2") chisel could be pushed into the gap twixt the alloy of the cases and the inner race, resting on the rollers and ready to go.
to stop the rollers falling out, i put the inner race back in and placed something inside the cases on the bench that would only allow it to fall a few mm out. this way the rollers stayed put.
i slipped the 12mm chisel into the gap and did what i do best which is to hit things really hard. the bearing came out as easy as ABC. i changed that something below the bearing after a coupla hits for 'something else' (which is something completely different!) and kept drifting the bearing into the cases.
so don't panic if you can't see how you're going to get the bearing out.
regards
Taffy
