Jacobs Portomatic #500 keyless chuck

dgehricke

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H-M Supporter Gold Member
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Dec 15, 2011
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191
Does anyone know why the chuck would have 3 precision holes in the face of the chuck ?
 
I had one and used the holes to dismantle the chuck. You put a pin spanner in two of the holes to spin the outside shell off.
 
I checked the jacobs web site and to disassemble it states to loosen/remove set screw from the ring and turn countercheck wise.
I'll give the pin spanner a try that seems more logical attached a photo so we are all on the same page.Thanks for the response and the info.
dgehricke
 
Oops another senior moment forgot to post the photo
 

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