Is it safe to use an Air Chisel on a brake drum? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1968SWBBigBlock · 08-28-2011, 06:59 PM

Ok its all apart
1 - one of the pin and cup assemblies fell out which prevents the adjuster from moving the back shoe - hence it is held in the wrong location, in traction, by the springs
I cut a window into the drum with my angle grinder- used my jigsaw to cut the adjuster - as soon as it was out of the way the drum came off
No hammer was going to take this off without more damage occuring unless the drum broke
Regarding cutting the nails - I considered this but was afraid I might damage the wheel cylinder going that route. In the end I think it would have been just fine.
One of these days I going to buy myself a fire wrench just for occasions like this.
I pulled the other wheel tire and drum of in less than one minute - just the way it should work.

08-28-2011, 06:59 PM	#15
1968SWBBigBlock Active Member Join Date: Oct 2006 Location: Ohio Posts: 1,643	Re: Is it safe to use an Air Chisel on a brake drum? Ok its all apart 1 - one of the pin and cup assemblies fell out which prevents the adjuster from moving the back shoe - hence it is held in the wrong location, in traction, by the springs I cut a window into the drum with my angle grinder- used my jigsaw to cut the adjuster - as soon as it was out of the way the drum came off No hammer was going to take this off without more damage occuring unless the drum broke Regarding cutting the nails - I considered this but was afraid I might damage the wheel cylinder going that route. In the end I think it would have been just fine. One of these days I going to buy myself a fire wrench just for occasions like this. I pulled the other wheel tire and drum of in less than one minute - just the way it should work. __________________ 1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles 18.5" x 31" Hoosier Pro Street Radials ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree



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