A question for those that will know more about the subject Chevy 1929-35(?) 1-1/2 Ton trucks and their mechanical brake controls. I came across a boxed spring set that are labeled "Chevrolet Brake Rod Anti-Rattlers" (1st pic). The set is made up of 6 - single length double hook (short) springs and 2 - double hook (long) spring sets.* According to the printed on cardboard diagram inside the box, they appear (I think???) to be meant for 1-1/2 ton Utility Truck brake control rods to prevent "rattles". The card shows the placement of the springs on the rods.
There are no such springs or springs sets shown in any Chevrolet parts books for 1929-35 Utility Trucks that I could find. The diagram on the card inside the box (1st pic) very closely matches 2 different Utility 1-1/2 Ton brake control rod diagrams I found. One in a 1929-32 Parts Book (2nd pic) and another in a 1934 Shop Manual (3rd pic).
Anyone know anything about these??? I did try and research the brand name on the box "Magna" and what appears to be a part number "C4702", but could find nothing on the web related.
* The Spring kit is unfortunately missing 1 of the 6 "short" springs", but the remaining springs look to be new/never used.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
That's probably an aftermarket accessory, but it looks to be a pretty practical thing to have. The missing spring could probably be replaced with a common hardware item, using one of the existing springs as a template for selecting the right length replacement, with or without putting the J-hooks on the ends. Does anyone else remember the "anti-clunk spring" that GM put inside the TH-350 transmission? Jerry
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