Hi.
I am the very proud owner of an early 50s' Airone sport. After a few teething problems after purchase I got it well sorted and it ran superb - so much so in fact I manage to wear a brand new rear tyre out this summer.
I've noticed that it has developed a small amount of lateral movement at the flywheel. Ah main bearings me thinks. So to cut a long story short I decided to change them - after all they wont get any better if left. especially as I intend to use the bike as much as possible next summer.
Anyway I got the motor out and started to strip it down. Everything was going fine till it came to remove the inner manicotto dentato (as I believe they are called) from the gearbox output shaft.
My Italian is in very short supply but after looking at the workshop manual - Fig 11, I got a good fitting C spanner and a socket on the clutch hub nut assuming the manacotto would unscrew whilst the shaft was held by the socket on the clutch hub nut. unfortunately all that happened was the clutch hub nut unscrewed. So either the manacotto is screwed on really tight (I expected the clutch hub nut to be tighter, thus letting the manacotto unscrew before the nut) or I'm doing something wrong.
I'm not a novice when it comes to spanner work, but I have never worked on anything of this vintage before so rather than carry on and risk damage I thought I should seek some advice/help from somebody that has more experience of this motor than I have.
So my question is - have I misunderstood or rather misinterpreted the picture and I am going about it completely wrong?
Any help/advice would be most appreciated.
Thanks in advance.
Clive
I am the very proud owner of an early 50s' Airone sport. After a few teething problems after purchase I got it well sorted and it ran superb - so much so in fact I manage to wear a brand new rear tyre out this summer.
I've noticed that it has developed a small amount of lateral movement at the flywheel. Ah main bearings me thinks. So to cut a long story short I decided to change them - after all they wont get any better if left. especially as I intend to use the bike as much as possible next summer.
Anyway I got the motor out and started to strip it down. Everything was going fine till it came to remove the inner manicotto dentato (as I believe they are called) from the gearbox output shaft.
My Italian is in very short supply but after looking at the workshop manual - Fig 11, I got a good fitting C spanner and a socket on the clutch hub nut assuming the manacotto would unscrew whilst the shaft was held by the socket on the clutch hub nut. unfortunately all that happened was the clutch hub nut unscrewed. So either the manacotto is screwed on really tight (I expected the clutch hub nut to be tighter, thus letting the manacotto unscrew before the nut) or I'm doing something wrong.
I'm not a novice when it comes to spanner work, but I have never worked on anything of this vintage before so rather than carry on and risk damage I thought I should seek some advice/help from somebody that has more experience of this motor than I have.
So my question is - have I misunderstood or rather misinterpreted the picture and I am going about it completely wrong?
Any help/advice would be most appreciated.
Thanks in advance.
Clive