Disassembling Burnerd 3 jaw chuck.

Disassembling Burnerd 3 jaw chuck.

This topic has 5 replies, 5 voices, and was last updated 15 December 2025 at 12:18 by YouraT.

Viewing 6 posts - 1 through 6 (of 6 total)

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14 December 2025 at 21:49 #828782
YouraT
Participant
@yourat
I’m trying to take apart a Burnerd 3 Jaw, but I’m having trouble taking off the small plate behind the scroll. The spindle mounting backplate is already off.

I’ve taken the three small screws off, but there’s no obvious way of taking the plate out after that. Gentle tapping on the scroll hasn’t helped, presumably as the three activating pinions are in the way.

Any pointers?

Thanks.
Advert

14 December 2025 at 22:37 #828794
Wade Beatty
Participant
@wadebeatty78296
A puff of air from the (never to be used) air nozzle? A wooden dowel from the other side and try to catch the edge of the plate maybe?
14 December 2025 at 23:13 #828797
peak4
Participant
@peak4
A side view of the chuck might assist, as there are several different designs.

Bill
14 December 2025 at 23:25 #828799
Grindstone Cowboy
Participant
@grindstonecowboy
Try warming the chuck body with a heat gun – doesn’t have to be too hot to hold – and then a sharp smack onto a piece of wood or carboard on your bench (rear of chuck downwards).

Rob
15 December 2025 at 10:10 #828810
bernard towers
Participant
@bernardtowers37738
try tapping the edge of the chuck body with a copper/lead mallet and rotate, the reaction should eventually work.
15 December 2025 at 12:18 #828817
YouraT
Participant
@yourat
Thanks for the suggestions everyone.

Some gentle heating of the body and a sharp smack onto a wooden surface did the trick – expansion of the body and softening of the very old grease both playing a part no doubt!

Cheers,

Youra.
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