I think these are the same springs used for years by Hudson. I think they are simple to replace. Just need a screwdriver and some advil after you turn yourself upside down on the floor of the car to replace. Much easier, of course, if the unit is out of the car.

Photo from '53 Hornet. It has only one spring and seems to work fine. Do I need more springs??
Anyway, the coil section is 5/8" diameter and is 4" long; from hook to hook is 8". Tks for incentive to measure; I like to keep spare springs for the road.

Mine has another attachment point in the body that springs attach to. Have you looked at the shop manual diagrams for your model?

Have a '52 Mech manual and it does show 3 springs{pg 15-2}: #17 Pedal pull rod to guide hanger spring; #18 Brake control lever to guide hanger spring; and #34 Hand brake cable lever return spring.
Now I am confused !! Diagram not very clear but they are all close together. Now I need help ?? Someone with the 3 take a photo.

I really can't see where any other springs might be installed; and it seems to work fine???

Have looked at this again today (have car lift so it is easier to do than most). The spring #17 is the only one I have. Spring # 34 goes between the hole in arm back to a welded tab to the rear seat floor--probably 14" between mount ends; this is to retract the Emer. Brake when released so it couldn't be too strong or it would be too hard to pull the handle back. Spring #18 is a mystery; there is a small link with a spring hole on top of the bolt where it attaches to the arm BUT I cannot find exactly where it hooks at the other end. I will look for a medium spring at Ace for #34 and then use a connector wire, etc. to make sure the system releases. Maybe someone can advise where #18 connects on the other end.

Parts book indicates that

#18 is a "Spring - control lever to hanger-less PB." PB are power brakes. Part # 300916

#17 is a "Spring - pull rod to hanger-less PB." Part #300914

#34 is a "Spring - cable return." Part # 302169

18 and 34 attach to a small "hanger" These are little metal tabs that are held on with a cotter pin on one end and have a small hold for the spring to attach to on the other end. Don't have a picture of those. YOu should look in the online literature if you're a member and go to the 48-54 master parts catalog and you'll see a better picture than the one posted here out of the service m have a hard copy myself. It can be very difficult to find springs with the correct tension at a parts store. In many ways, you're better off if you can find some decent ones off a parts car. Check out the people in the club who sell used parts and they probably can help you.

I will have to go back and look at my set up again, and see if I can get some pictures. I know that the emergency back up brakes worked well when my master cylinder went dry. This is the Hudson Triple-Safe brake system and that's what all the levers/springs are for -- if you lose hydraulics, keep pushing on the brake pedal to activate the rear brakes. In that case, the brakes feel inadequate and weak because it's just the 2 rears that are working, but better than nothing! Let's you know you need to attend to brakes immediately You want to be sure it's right. The brake pedal should never go all the way to the floor on a properly adjusted system, so follow the instructions in the service manual. Unfortunately, a lot of folks may be driving around thinking their brakes are bad or horribly out of adjustment because their only the rear brakes are being activated mechanically and they really need to fix their hydraulic brakes.

This is the first time it seems to have stumped the club. Maybe someone has an undisturbed original or parts car and can get a pic that shows the original springs and an estimate of the sizes. The drawings is really unclear on the attachment points and I hate to guess on something like my brakes.

This may be a little help. One pic is of the tab on the likage for attachment of a spring. Found it after scraping off a thick layer of dirt and grease. I also found the remains of a small spring that was still hanging from a hole in the frame member that runs across the car just behind the linkage. it is a fairly small spring about the diameter of a pencil.