OldIHC

Nice find Mike, hopefully its a fit.

--George

Here is a photo of the good one. It is approximately 2 3/8" from end to end. The body is about 9/16" diameter.

Thanks everybody,
-Snowman.

Not sure just how to take that MM??? I have no way to look them up anyway,even though it's the right way to start.

FYI... The color codes on brake springs indicate the tension in lbs. I tried to find a listing but only found mention that White are 50lbs. & Blue are 65lbs. I even looked on the SAE website,NADA.

Using a spring with the wrong rating may not be a good idea,too high and the cylinder may not be able to fully expand the shoes. A lower rating (not too much) would probably be a better choice.

After the pic of the spring was posted I did some looking,I wanted a Wagner brake hardware printed catalog because I'm pretty sure springs are listed with dimensions and rating,came up blank there. IIRC the United (Napa) printed catalog like the Wagner had that info too? The web may be a wonderful thing,but not in this case.

I found a few that "look" similar though...
(some are kits,but wadda ya gonna do?)

H100
http://www.fme-cat.com/overlays/part-de ... brandId=WB

H108
http://www.fme-cat.com/overlays/part-de ... brandId=WB

H322
http://www.fme-cat.com/overlays/part-de ... brandId=WB

H325
http://www.fme-cat.com/overlays/part-de ... brandId=WB

H338
http://www.fme-cat.com/overlays/part-de ... brandId=WB

H404
http://www.fme-cat.com/overlays/part-de ... brandId=WB

H408
http://www.fme-cat.com/overlays/part-de ... brandId=WB

H412
http://www.fme-cat.com/overlays/part-de ... brandId=WB

H424
http://www.fme-cat.com/overlays/part-de ... brandId=WB

The last kit we tried to take parts from was H711. Just like Scottso says, we may have to use a "lighter spring". Also - Should we have the shoes relined or is there a known part # for them?
Thanks.

Besides length look at the number of coils in the spring. I like the looks of a couple of the ones that Scott listed for that reason better than what I had found or the H711 you found. That actually ties in with what Scott said about tension, the less coils the wire diameter will be larger and the spring stiffer. Scott having grown up in a small town and working on obsolete stuff, my Dad had always told me don't worry just figure out how it was intended to work and figure out what is available and will do the same thing. Now I admit with the invent of the internet tracking old numbers is much easier and You have me trying there first. MM

I should have posted this link before,found it on the Diamond-T forum. They make "custom" springs and seem to have a large selection of stock springs. The PDF catalog only opened to the index,so I couldn't check. Might be worth a try?

http://www.centuryspring.com/

Mike, I've been know to do the same when all else fails and have gotten pretty good at it. Like they say (whoever the h*ll "they" are)... Necessity is the mother of invention.

The shoes will probably have to be relined,I've yet to find an online catalog with IH's pre 1941 and those appear to be different(?) than the D series. For that matter,I looked at a ton of brakes and didn't see any that had the spring in question. I can't believe IH was the only one to use it though,back then it was usually either Bendix or Lockheed (pre Wagner).

FWIW, 38PG is what Raybestos lists for the K-1/K-2 front which are 12 x 1.75.

Knowing the mfr. can really narrow thing's down in any case,IH used both over the years,even in the same series sometimes depending on the axle used.

To paraphrase my old boss "it's brakes!" which was his way of saying of "what's the big deal?".
Chances are that tiny spring if changed for a slightly longer, shorter, or different strength would have no real effect on your antique drum brake stopping safety or experience.
I can't tell you how many times I've taken a broken old brake spring sample over to my box of extra brake springs saved from decades of working in shops that did brakes (all of them did) and come up with a pretty good replacement.
You gotta remember the tremendous forces being applied by the wheel cylinders will overcome any strength return spring.
I think I would worry more about the fact they aren't self adjusting and get really good at adjusting the front brakes especially.

Hey Snowman,

Not sure if You did anything with Your brake shoes yet but I found some old notes that I had written down from
the old forum and show a possible brake shoe match for front and rear are Napa TS30. They are still listed on
the NAPA website and the size is correct, 12" x 1 3/4", so maybe You can bring the old shoes in try matching them up.

--George

If that works out, please post up the info in the "parts" section. Thank you!

George, We have not had any luck locating brake shoes yet. The Federated book shows a similar shoe #BS30 but the adjuster spring hole is lower (no big deal) and the top "notch" is only a single width. Whereas the shoe off our truck is plated on both sides of the notch to make it triple wide. How would we make up for this width difference? Photos of top of shoe and bottom of shoe are below.
-Snowman.

p.s. we were going to NAPA tonight anyhow, so now we'll have a head start on their numbers...