Fixing AMMCo 8000 brake shoe grinder question

I have one of these and I replaced the big bearing on the shaft that holds the sand paper on a couple of years ago. Some how I did not install the piece of metal that forces the dust out into the bag. Does any body know how it attaches to the shaft?? Thanks in advance. The parts box that I got with it does not show any thing.

 

I found this; Ammco Safe-Arc Brake Shoe Grinder Manual for Models 8000, 880, 890
[FONT="Trebuchet MS", Arial, Helvetica]SKU: MAN-AMMCOSA8000INPT

Ammco Safe-Arc Brake Shoe Grinder Manual for Models 8000, 880, 890
<TABLE border=0 cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR vAlign=top><TD noWrap>[FONT="Trebuchet MS", Arial, Helvetica]PRICE: [/FONT]</TD><TD vAlign=top width="100%">[FONT="Trebuchet MS", Arial, Helvetica]$15.00 [/FONT]</TD></TR></TBODY></TABLE>[/FONT]
301-697-4890

 

do you know where we can get 8007 sanding belts?

 

you dont need propeller hooked up if you hook to vacuam.

 

Did anyone follow through with Pedro or find belts in the USA?