B&D valve grinder help

[twistr71]

Recently aquired 2 very early B&D valve grinder machines
Both work but need help with any info you might have

1st one is a model #45 ser#A1684 (on the right)
this was a freebie!!
the valve chuck has a very slight wobble and need to know
how to get it apart

2nd one has no model# only a ser# B2526 (on the left)
not bad for $40
it has changable collets for the valve stems
only got the 3/8 size with it
any info on this would be great

thanks shawn
[email protected]

 

[wafrederick]

Parts are obsolete and you can't get parts for them anymore.My father had the hand held valve seat cutter and that took a dump.Found out parts are obsolete and traded it in for a new Snap On set up when he had his dealer.

 

[Steevo]

They both look to be worth restoring. I like those old black motors with brass tags, etc.