BJ8 vent window collar fused on

[Bob J]

I need to take my vent window apart to install new seals. The collar seems to be fused on the pivot. I think they are intended to be separate parts but time has fused them together. I've used all typical techniques to pull it off (penetrating oil, heat, big pliers...) I don't think the pivot and collar are made anymore unless someone gives me a lead.

Any thoughts? Wondering if I can find a collar in the hardware store with a set screw or similar because I think I need to cut the collar off.

 

[Bob_Spidell]

What's the collar made of?

 

[HealeyRick]

Get it cherry red with an oxy-acetylene torch. It should expand enough to come off.

 

[Bob J]

The collar looks like it could be zinc. It seems to be softer than steel. I'll get it super hot and see if it slides off. Thanks

 

[Bob_Spidell]

If it is zinc, or another 'soft' metal, it might have been cast in place (which is why it won't come off). If you get it 'super hot,' it will likely melt.

 

[Bob J]

It certainly looks like a separate piece in the Moss catalog and it would have to be loose to dis-assemble the vent window. I may have to cut it off and find a new collar with a set screw.

 

[Bob_Spidell]

It certainly looks like a separate piece in the Moss catalog and it would have to be loose to dis-assemble the vent window. I may have to cut it off and find a new collar with a set screw.

Maybe one of these would work:

https://www.harborfreight.com/7-piece-drill-stop-set-38336.html

 

[HealeyRick]

If it's zinc, it melts at about 750 degrees F. Maybe throw the whole thing in the oven at high temp. The zinc will expand quicker than the steel, perhaps that will work.