Dressing gears?

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Gillesdecourse
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Dressing gears?

Post by Gillesdecourse » Fri Dec 25, 2015 10:12 pm

Hey everyone, I am swaping some parts between two toyota L52 5-speed gearboxes from a 1983 toyota pickup 4wd. I have heard the term ''dressing gears'' before as in taking a file to them, and filing. But what do I actually do? I have some gears with a bit of wear such as reverse, should I file one side into a tip (little triangle)? Anything I can to do restore or improve shifting or wear in these old transmission while I have it all appart? Any tip welcome Thanks!

BirdMan
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Re: Dressing gears?

Post by BirdMan » Sat Dec 26, 2015 12:23 pm

I think you will find the gears are harder than a file! I imagine a 3" sheet metal wheel would work for dressing them, I myself would try that. Who knows???
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Brian P
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Re: Dressing gears?

Post by Brian P » Sat Dec 26, 2015 8:31 pm

I can't see how making a gear go further away from an ideal involute form with all teeth the same would be a good thing to do.

I can't see how anything you do with hand tools, other than removing obvious burrs and smoothing the edges of chips etc., would make it become closer to an involute tooth form with all teeth the same.

I can't see how removing surface treatment (case hardening), outside of removing obvious burrs and sharp edges, would ever be a good thing to do.

emsvitil
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Re: Dressing gears?

Post by emsvitil » Sun Dec 27, 2015 4:16 am

The only thing I've ever done is small chips on the end with a dremel (W56 from an 86 toyota truck)

Image


Other than that, run the gears in no load (axle on jack stands ) for awhile (15 min), let cool; then light load driving (1/2 hour), let cool.......
Ed

Gillesdecourse
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Re: Dressing gears?

Post by Gillesdecourse » Sun Dec 27, 2015 3:19 pm

That is exactly what I was looking for, thanks a lot!

autogear
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Re: Dressing gears?

Post by autogear » Thu Dec 31, 2015 9:28 am

if there is a bump in the tooth, do not reprofile the entire face, address just the area that needs it. If there are some chips or gouges, best bet is to address any burrs with a hand stone, I would not use any type of grinder, as one slip and you just made a junk gear

Gears will probably be similar to 8620 steel and around 58-62 on the Rockwell C scale

emsvitil
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Re: Dressing gears?

Post by emsvitil » Thu Dec 31, 2015 8:08 pm

I used the little sanding disk with the dremel, no gouging that way.......
Ed

Gillesdecourse
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Re: Dressing gears?

Post by Gillesdecourse » Sun Jan 03, 2016 12:47 pm

I will use this advice thanks!

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