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#14841 02/04/2004 1:15 AM | Joined: Jul 2003 Posts: 141 Member | | Member Joined: Jul 2003 Posts: 141 | I searched the archives on this but couldn't find anything, so here is a dumb question.
I got a chance today to install new brake parts on one side of the rear of the '52. After assembly I wanted to get a good understanding of how the parking brake system actually works. It's easy to see what happens on engagement, but I'm wondering what actually causes the tension to be removed from the cable after disengagement.
Is it just the top and bottom springs that hold the 2 shoes tensioned? There is a small spring on the horizontal rod connected to the curved parking brake rod, but that really doesn't produce much pressure. Just curious. | | |
#14842 02/04/2004 1:33 AM | Joined: Nov 2003 Posts: 86 Member | | Member Joined: Nov 2003 Posts: 86 | Shoeless, that horzintal spring is what does it. Try streching that spring by hand, it has a lot of tension. | | |
#14843 02/04/2004 4:51 AM | Joined: Jan 2002 Posts: 2,839 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,839 | shoeless,
Aren't you suppose to be taking care of your better half instead of your truck?
This is an issue thatI also will be investigating within a week or two.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
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#14844 02/04/2004 4:59 AM | Joined: Jul 2003 Posts: 141 Member | | Member Joined: Jul 2003 Posts: 141 | Originally posted by cmayna:
Aren't you suppose to be taking care of your better half instead of your truck?
I got a 4 hour break when one of her friends stopped by to chat. Good medicine. Craig, I could have used a 3rd hand when assembling the rear brakes with the extra parts. You may want to schedule some bonding time with your son. | | |
#14845 02/04/2004 2:56 PM | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | shoeless, If your parking brake pull rod assembly looks like the assembly in the diagram below, from the 47.5-54.5 Factory Assembly manual, spring 369935 and rod 3687278 (on 1/2 ton) should provide enough return "tension" to almost slam the parking brake pedal back into the released position. Do you know if all privot points from the pedal to the rear cross shaft and the brake cables themselves were moving freely? In particular, the cables often get rusty and bind inside their housings. Tim http://home.nycap.rr.com/lederman/images/pkgbrkspring.jpg | | |
#14846 02/04/2004 8:10 PM | Joined: Jul 2003 Posts: 141 Member | | Member Joined: Jul 2003 Posts: 141 | Thanks Tim. I hadn't given any thought to the actual return spring and linkage since they are not installed as of yet. I got out my Assembly manual and looked up the diagram you posted, and then I remembered how tough it was to get that spring off the return rod due to it's strength.
Dumb me, I also didn't even consider that the cable can be forced back also. BTW, all the parts are new, including the cables.
I'm getting close to having an actual rolling chassis (minus the engine and tranny). | | |
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