M37 Parking brake drum diameter ?

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knighthawk

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Can anyone tell me the diameter of the parking brake drum for the M37 with the New Process 420. I just picked up a 1960 Dodge D400 dump truck missing the parking brake drum and band. Since it uses the same New Procee 420 as the M37 I am trying to determine if the M37 parts will work. Thanks in advance for any help.
 

John Mc

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I just went out and measured the parking brake drum on my (mostly) 1951 M37.

I got 7 3/4" diameter. (Note that this is just with a measuring tape, not a micrometer or caliper, so take that number for what it's worth.)
 

Floridianson

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I just went out and measured the parking brake drum on my (mostly) 1951 M37.

I got 7 3/4" diameter. (Note that this is just with a measuring tape, not a micrometer or caliper, so take that number for what it's worth.)
Yep that is what my tape measuring tape said.
 

knighthawk

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Thank you very much. The D400 is referenced as having an 8" drum diameter. I suspect they are the same since the transmission is the same.
 
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