Kingpin replacement question

You can either Drill and Tap the next size of the bolt, If i remember correctly (most axle's are a standard size) its a 1/4in diameter so drill with a 1/4 bit and use a 5/16 tap.

Or you can buy a helicoil sold at most auto parts stores same method as the drill and tap but instead of using another sized bolt, the helicoil will go in the newly threaded hole. Then you can fasten with the original sized bolt.

Personally I'd go with the helicoil method, as it makes it original and its a breeze be sure to use thread locker on the coil and careful with the grove when drilling although there's plenty of room around there.

 

Helicoil is a brand. The product you need is called a thread repair kit, its about 30 bux at autozone http://www.autozone.com/autozone/ac...&fromString=search&itemIdentifier=466578_0_0_

all you need is a bit and drill, ohh and dont listen to the special order BS they stock them at the stores.

 

I assume he is talking about the 2.5 inch cap on top, not just a bolt hole. I, too, would like to hear the remedy to this...

 

Oh, and personally, I'd just make a bolt on cap and drill and tap some 1/4 inch threads in the knuckle myself. Will be easier to work with later on as well. Those threaded caps can be though to get out if you keep the truck long enough for anoth kingpin job to be needed.

 

Will running a tap and/or die over the threads get you back in business?

Should you decide to go the insert route, I strongly suggest using Keenserts or Acme threaded inserts, which are easier to install while having far superior holding power.
http://www.acmeindustrial.com/keensert_comparison.html

Better parts stores will carry them.

Just saw this after posting...

Hmmmm, Any chance the threads could be touched up with a fine file where they're bunged up?

 

My best guess would be a Dremel tool with a small cut off wheel and a steady hand to clean up the affected threads.

 

if it looks like it can be touched up, you can use the same size and pattern die. and just run it through to lean the threads.

Not alot of holding power is needed in this situation. but every region probably sells those coils under diferent brands. but they all work the same. The last one I did was to secure the fan clutch bracket to the mount. I used red thread locker on the coil so It can stay there ;D Four months and its still holds fine.

 

Auto parts stores sell a file that acts like a threading tool for just such handy mechanics that miss with the hammer.

$16

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