The Stovebolt Site Forums The Shop Area Driveline Front Brake Pins (37 Chevy 1/2 Ton Pickup)

Can anyone help with a couple of questions on front brakes:
1. On the front Huck style brakes, what holds the pins in place that secure the shoes to the articulating links?

2. Same question on the anchor pin?

I see two types of “pin locks” on line, but can’t tell which goes where or what size to get.
Type 1: http://www.chevsofthe40s.com/detail/13790/Chevrolet_PIN_LOCK_BRAKE_PIN_ECLIP_916_OD.html
Type 2: http://www.chevsofthe40s.com/detail...E_ANCHOR_2932_OD_12TON_MOST_34TON_2.html

3. Also, what holds the back side of the cone spring J-hook?

Trying to get all the right parts together before my brother comes down to help me work on my brakes.

Thanks,
Mike

For the pin locks, the original style holds best. There is a spring that holds each joint tight. The retainer slips over the pin, into the groove and the lip is bent down so that it can't come out. The other modern style of clip is much thinner and tends to bend under the spring pressure. The originals are difficult to buy from description. I ended up buying some of different sizes to find out which one fit.

Unfortunately I don't have an original to look at. Does the original look like the "warped washer" at the following link? http://www.chevsofthe40s.com/detail/9362...ST_34TON_2.html

Thanks,
Mike

That is the beast. The inner curved section at the back slides into a groove in the pin. At that point the bent section is sticking up above the top of the pin. When you bend it down over the side of the pin, the whole thing cannot move enough to come out of the groove.

Thanks. Now that I have parts in hand the assembly seems to make sense.
Mike

Truckernix,
My brother and I successfully replaced the shoes and cylinders this weekend. The small middle spring-loaded pins on the articulating arms were indeed "beastly" but we got it done. Thanks for your advice on getting the right parts.
Mike

I am curious. Were you able to get them from Chevs of the 40s?

I got them from Jim Carter. Chevs of the 40s had them, but I was already ordering other stuff from Jim Carter so I just got ordered from them.

As a follow-up, I've pulled the rear drums off my 46 pu, and there were no "conical springs" installed pictured in the shop manual. There are no holes in the backing plate for the J hooks to fit through either. It doesn't seem to me to be any use to only hook the conical spring on the brake shoe. Do I have the wrong backing plates? Or am I not understaning the purpose of the conical spring? Thanks.
PS. I haven't pulled front yet to see if there are the conical springs there 'cause I only have one set of jack stands (next purchase).

The rear end on my 37 is from a 69 Camaro so it's an entirely different braking system, so I can't help you there. As for purpose of conical springs, my guess is that is that they are designed to provide a little flexibility (rather than a hard pivot) to the midpoint of the shoe.

I think there were several designs of the Huck system. My 1951 1 Ton didn't have conical springs but I thing my 38 Master may have them.

Thanks so much for the info on the conical springs. I was concerned something was wrong - makes sense that I may have a later backing plate mounted. Thanks!