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500 Tappet cover head size

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McCabe-Thiele (Ted):
I have a thread file but tbh I do not really know how to use it - its a square looking file covered in bits of differently gapped sections - it was bought for a specific job a few years - I bought the wrong type this is for sorting bolts out not nuts - for starters not sure what thread the cap are?

Oddjob:
You find the side of the thread file that matches the thread in question. Then keeping the teeth aligned with the threads you just run the thread file along the threads, any burrs etc should be removed by the file.

Laverdaroo:

--- Quote from: McCabe-Thiele (Ted) on October 03, 2023, 01:00:43 PM ---I have a thread file but tbh I do not really know how to use it - its a square looking file covered in bits of differently gapped sections - it was bought for a specific job a few years - I bought the wrong type this is for sorting bolts out not nuts - for starters not sure what thread the cap are?

--- End quote ---

Loads of bits on you tube Ted, picked this at random.Having a thread gauge helps enormously though........


https://www.supercheapauto.com.au/blog/tools-workshop/how-to-use-a-thread-file.html

McCabe-Thiele (Ted):
Thanks Roo an idiots Guide fits me perfectly!

Mine is double ended so it has 8 different metric thread pitches - that's why I tend to ask what the thread pitch is as my eyes arn't great at the initial checking process plus on these caps there is not a lot of threads to check against like a long bolt.

PS Somewhere I have a set of gauges but it's not just for metric so way too confusing. Having the right tool does not work when there is another tool at the handle end.

Laverdaroo:
I got a new pitch gauge with some taps I bought and use that. Quick check, match the file size up,sounds like you have the same one as me, and away you go. It’s amazing what you can recover with them, threads that you thought were proper knackered can be nannied up rather well when used with a bit of patience


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