laverda 500 flywheel puller thread

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fintanoc

New member
Location
ireland
would anyone know the thread diameter (looks like 26mm), pitch and direction (it looks like clockwise) for a tool for extracting the 500 flywheel. I have done some checking and can't see it anywhere. Thanks
 
fintanoc said:
would anyone know the thread diameter (looks like 26mm), pitch and direction (it looks like clockwise) for a tool for extracting the 500 flywheel. I have done some checking and can't see it anywhere. Thanks
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There are two important tools in a workshop.
A rubber mallet and a thread gauge.
Paul
 
Hi Paul

I have both of them but think a flywheel puller tool would be cleaner. I have loads of experience at breaking things and being full of regret. I see many flywheel pullers on the internet at such low prices that I would be even more full of regret if I damaged something through skimping on buying the tool .
 
fintanoc said:
Hi Paul

I have both of them but think a flywheel puller tool would be cleaner. I have loads of experience at breaking things and being full of regret. I see many flywheel pullers on the internet at such low prices that I would be even more full of regret if I damaged something through skimping on buying the tool .
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Yes, but if you measure the thread on the flywheel, you have your answer.
I wonder if I didn't use the front axle trick last time I did it?
Paul
 
I measured about 24.5mm from the thread at one side to the thread at the other side. if you allow 1mm for the thread depth, that would make 25.5 . that is why I am wondering is it 25mm or 26mm as the rough measurements I have done could go either way. the pitch I think is 1mm and I think it screws in clockwise. Before I buy a puller I just want to be sure. It is hard to do exact measurements with the crankshaft end in the way and I haven't anything to thread in as a test.
 
This is a very generic comment, but a pitch of 1.5mm is extremely common for 'special purpose' threads like this. I'm pretty sure both types of triple alternator thread are 1.5. I'm not familiar with the 500 at all but looks like it is an internal thread, see if you can get a ruler across as many threads crests as you can see, it will split the error. If six threads look like about 9mm then it's 1.5. From your info and a bit if educated guessing it's probably M26x1.5.
The puller thread will for sure be right hand, crank nut might be left?
 
Thanks Redax for going to the trouble of checking your flywheel puller. Without your info. I would most likely have ordered the wrong tool. And also all the other guys who offered advice.
 
I was surprised at how easily the flywheel came off. The last time I used that puller was for a car pulley and it took some pressure. I have the special puller tool ordered but just went messing my standard puller out of curiosity.
 

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had ordered it before I tried the setup on photo. I had read a post where somebody said they had tried unsuccessfully with an ordinary puller and were therefore looking for the special tool. Maybe Paul was right that a few properly applied taps of the rubber mallet might have freed it. On the plus side the proper tool makes an amateur like me look a bit better and it only cost €11 (small print: and a further €10 for the bloody postage - the postage is a killer these days)
 
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