The Stovebolt Site Forums The Shop Area Driveline (Foot) Park Brake Rod/Spring

Somehow I lost the tab that goes on the rod that the spring hooks onto. I will be welding a homemade tab on just as soon as someone can tell me where on the rod it is suppose to be. How many inches from the end of the rod?

Not sure if this is what you're asking about Jim, but there is
no tab on the rod. The spring just hooks into the link, which
is hooked into the clevis: http://www.pbase.com/dennygraham/image/134021809/large

Denny Graham
Sandwich, IL

Thanks Denny, that makes the problem a bit easier to navigate. My factory assembly manual shows the tab, of course the manual is for the 54. I just remembered there were two drawings, one of the long bed and one of the short bed. I'm at my office and will need to check the book when I get home. Perhaps the long bed was the reason for the tab. However if I remember correctly yours is a 3/4 ton (long bed).

Jim, my rod with the tab is of my 1/2 ton '52panel. From the end that is not adjustable it measures 27 1/2" to the center of the eye on the tab.

The panel must be a 3102 because that 27.5" measurement on mine is the full length of the rod minus the tab. ???

actually Jim, its a 3105....or I think it should be! The clevis on one end can be adjusted and on the other end it "looks" like a clevis but is part of, are factory welded as part of the rod and is not adjustable. I measured from the very end of the non-adjustabel end to the hole in the tab.... I didn't measure the entire length but I'll bet its close to the 50 1/2" listed in the parts catalog as it seemed to be about half way!
To late to go out and double check, and its raining!!!

Alvin,

This is what mine looks like:

Clevis_________27"__________clevis______________clevis

From the rear clevis to the mid clevis is 27.5".
I suppose I could hook up the spring with a long hook between the two rear clevis.

Yes, mine is a ’50, 3604. It’s been five or six years since I re-did all of the brake
work Jim, but I did a lot of research on that return spring. It just didn’t look right
to me, a bit lacking in design but I believe that was the way the ¾ ton return
spring was attached. I did some work on a friends ’50 ½ ton and the brake rod did
have a tab welded on it that the spring hooked into and there is no link like on the
¾ ton, so I don’t think you can compare the two. Although it’s kind of a half
asrsed setup, so was the throttle wire retaining the throttle link to the Rochester B
and I thought the same thing about that, but it’s worked as I said, for the last 63
years on my truck.

DG

My 50' 3600 is the same exact set-up as in Denny's picture.

At some point GM must have decided the tab was needed because they show up in the factory assembly manual. Weird!

OK, ya got me curiosity up Jim, so I dug me FAM out and it indeed does say that
the illustration applies to the 3604 also. So………I took me Kodak out to the
cold, cold barn and crawled under the ’54. I haven’t started the under side work
on her yet, in fact I haven’t done anything on her for more than a year.
Well sure enough, I ups me pictures to the confuser and here they are:
http://www.pbase.com/dennygraham/image/148786850/large
http://www.pbase.com/dennygraham/image/148786851/large
The ’54, 3604 uses a single piece rod just like the ½ ton and it
does have a tab wrapped half way round the rod and spot welded to it.
The earlier i.e. pre-’54-’55 1st 3604 uses a two-piece rod.
Enjoy!
Denny Graham
Somewhere north of Sandwich, IL

Believe it or not but my 52panel had the rod like Denny's picture. I checked my notes it was a two piece deal...meaning there was the piece of wire with the spring hooking to it.

...and I checked my overall length tonight and it is 50 3/4" from the end of the "fixed" clevis to the very end of the threaded end.

Don't know if this helps any, or anyone, just trying to contribute.

I love a good mystery, but only if it's solved. It looks like we have an answer here. My next question is, where can I find a hook like the one in your pic Denny?

Ok, so here is the way it looks to me. The early 3604 AD’s up to and including 1953 used
a two piece pull rod for the parking brake that did not have a tab welded on the rear rod.
The spring was linked to a 7” long hook that was hooked to the front clevis of that rear
rod.
http://www.pbase.com/dennygraham/image/148792357/large
http://www.pbase.com/dennygraham/image/148792014/large

The 1954-55 1st 3604 had a single piece pull rod with a tab spot-welded to it that the
spring was hooked into and used a short hook to link it to the crossmember gusset at the
rear.
I do not have any first hand information on the ½ ton other than the 1950 did have a
single piece pull rod with a tab welded to it. I have no information or documentation on
the big bolts or the panel trucks.

Denny Graham
Sandwich, IL

Jim I believe I have a couple extra hooks send me a PM.