Aviacs
ArboristSite Lurker
Very fortuitous to ask here and have you reply - I'd probably have broken something eventually.
The hub does have to come off first.
Then the woodruff key ("1/2 moon key") should be removed.
If the entire unit was pulled using arm pullers over the "case", the bearing in the "case" would likely ride on the woodruff key, still retained by the hub, and make a mess of the key & shaft.
I made a simple little puller for the hub, and a center stud to bear on the shaft while pulling.
After getting it off, removing all the plates, and then pulling the basket (the "case") with a 3-arm puller, It occurred to me to wonder what the 2 setscrews were for?
They unscrewed easily, and as my son has reminded me in the past "Light dawned on marble head".
IOW, if the puller had been made longer, the basket could have been pulled with the same shop made tool, moving the screws to an outer position.
I hope this may be useful to the next person who has to investigate a clutch on one of these saws.
My intention had been to just machine a new basket and retain the old one as a spare. However, the center bearing is notchy, and the sprocket is worn quite badly.
All the parts are riveted together including the bearing in the center, so it is useless as is. New plan is to remove the rivets, and build a new sprocket onto the old basket.
Some of the dimensions don't look ideal, but close enough to keep going.
The hub does have to come off first.
Then the woodruff key ("1/2 moon key") should be removed.
If the entire unit was pulled using arm pullers over the "case", the bearing in the "case" would likely ride on the woodruff key, still retained by the hub, and make a mess of the key & shaft.
I made a simple little puller for the hub, and a center stud to bear on the shaft while pulling.
After getting it off, removing all the plates, and then pulling the basket (the "case") with a 3-arm puller, It occurred to me to wonder what the 2 setscrews were for?
They unscrewed easily, and as my son has reminded me in the past "Light dawned on marble head".
IOW, if the puller had been made longer, the basket could have been pulled with the same shop made tool, moving the screws to an outer position.
I hope this may be useful to the next person who has to investigate a clutch on one of these saws.
My intention had been to just machine a new basket and retain the old one as a spare. However, the center bearing is notchy, and the sprocket is worn quite badly.
All the parts are riveted together including the bearing in the center, so it is useless as is. New plan is to remove the rivets, and build a new sprocket onto the old basket.
Some of the dimensions don't look ideal, but close enough to keep going.