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JH BRAKE DRUMS  Rate Topic 
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 Posted: 02-15-2016 02:25 pm
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Joenpate56
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DOES ANYONE KNOW THE SIZE AND THREADS FOR THE BOLT THAT HOLDS THE BRAKE DRUM ON. I REPLACED THE WHEEL CYLINDERS AND FOUND THE BOLTS MISSING. DELTA DID NOT HAVE THEM. ARE THEY REALLY NECESSARY?
THANKS

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 Posted: 02-15-2016 10:03 pm
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t4brew
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It looks like it is a 1/4"-28.  I just ran a tap that size through the bolt hole in my '75 axle.
I am not sure about the length because my drums are not installed with any bolts.
You can get the needed length by measuring the depth of the drum and the axle mounting surface.
Looking at the parts catalog a washer was not used so it looks like a bolt length of around 1/2" would work.
My guess is that they are only needed to keep the drum from moving around until the wheel and lug nuts are torqued on.
After the wheel is installed the torque of the lug nuts will keep the drum in place.

Last edited on 02-15-2016 10:20 pm by t4brew

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 Posted: 02-15-2016 11:57 pm
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Joenpate56
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THANKS t4brew. I didn't think they were necessary but I have been wrong before. i'll just leave them out

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