Brake drum repair

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Robert Luland
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Brake drum repair

#1

Post by Robert Luland »

I got a hydraulic oem brake drum that is mint except the lug threads a striped. Anything keep me from using a Heli-Coil or cert to repair them? Does anyone have a better idea? Thanks, Bob L
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Re: Brake drum repair

#2

Post by RUBONE »

H-D sold oversize lug bolts for that. But i see no reason that a well done heli-coil job won't work. The threads more often are ruined by running loose than overly tight!
Robbie
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Re: Brake drum repair

#3

Post by Robert Luland »

Was the over sized lug one that you would retap for?
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Re: Brake drum repair

#4

Post by RUBONE »

Yes, it was.
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Re: Brake drum repair

#5

Post by Robert Luland »

Was it a special tap or a jump to 7/16-20.
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Re: Brake drum repair

#6

Post by hydra74 »

Colony sells them with oversized thread 7/16"-20
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Re: Brake drum repair

#7

Post by john HD »

bob,

you can identify the factory oversized lugs by the groove machined on the outside. makes it easy not to mix them up.

john
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Re: Brake drum repair

#8

Post by Cotten »

John!

I have a handfull with the machined groove that are not oversize.
My Palmer's isn't handy, but I believe those were pre-War productions.

Honestly, I have never encountered an over-sized lug.
I would opt for a thread insert repair.

.....Cotten
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Re: Brake drum repair

#9

Post by 58Tin »

the part # I have for the oversize lug is 43531-35. 7/16-20 as opposed to the 3/8-20 std. size
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Re: Brake drum repair

#10

Post by PanPal »

Check carefully that you do not have a crack from this lug hole. If it really is only the threads you should be fine repairing it.
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