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1950 3100 parking brake
#1344029 Tue Jan 28 2020 06:42 PM
Joined: Jun 2016
Posts: 179
J
Jhyp Offline OP
Shop Shark
I'm giving it another try. Looking for any help, thoughts, insights into fixing my parking brake.
Background: I have adjusted the rear brake cylinders so there is just a hint of drag. I have installed a new pb cable. The concentric bolt holding the pb lever is properly adjusted. Slotted rod attached to the front shoe is in place.
Problem: when the brake cable is fully engaged (ie the pb lever is almost touching the backing plate near the axle and can not move forward any further) the slotted rod which is connected to the pb lever does not engage the leading brake shoe. The lever does not travel the full length of the slot in the rod.
Observations: slotted rod needs to be longer or slot needs to be shorter or missing a piece or ?????

Help. As always thanks in advance.
Jon

Re: 1950 3100 parking brake
Jhyp #1344092 Wed Jan 29 2020 02:17 AM
Joined: Mar 2014
Posts: 1,562
J
Shop Shark
Jon if you have any pictures (images) that will be helpful. I've repaired a few of these (including reconstructing one where the parts were missing), but I can't tell what yours might be doing (or not doing) without some help.


Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Re: 1950 3100 parking brake
Jhyp #1344096 Wed Jan 29 2020 02:39 AM
Joined: May 2015
Posts: 2,501
K
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
The parking brake lever attaches to the secondary shoe. You mentioned a concentric bolt, but I'm not sure what that means.
Here's a picture that may help. Compliments of Brad Allen


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: 1950 3100 parking brake
Jon G #1344106 Wed Jan 29 2020 04:28 AM
Joined: Jun 2016
Posts: 179
J
Jhyp Offline OP
Shop Shark
klhansen, I will try and post some pics next week. I'm out of town.

Re: 1950 3100 parking brake
Jhyp #1344107 Wed Jan 29 2020 04:29 AM
Joined: Jun 2016
Posts: 179
J
Jhyp Offline OP
Shop Shark
Oops my last reply was ment for JonG.

Re: 1950 3100 parking brake
Jhyp #1345514 Sat Feb 08 2020 12:27 AM
Joined: Jun 2016
Posts: 179
J
Jhyp Offline OP
Shop Shark
Here are the pics of my problem.
First pic is of BP lever fully engaged (ie touching the backing plate and can not go any further)
Second pic (although hard to see) is the slotted rod with the BP fully engaged. The BP lever does not reach the back of the slot and therefore does not push on the brake shoe to push on the drum. What am I missing?

Attached Files
Inkedbrake lever_LI.jpg (48.39 KB, 353 downloads)
Inkedslotted rod_LI.jpg (50.63 KB, 354 downloads)
Re: 1950 3100 parking brake
Jhyp #1345518 Sat Feb 08 2020 12:39 AM
Joined: Mar 2010
Posts: 9,311
5
Master Gabster
Did you adjust the brakes before you started working on attaching the parking brake cables?
Though this may seem like a dumb question by some, it is very important.

Last edited by 52Carl; Sat Feb 08 2020 12:40 AM.
Re: 1950 3100 parking brake
Jhyp #1345566 Sat Feb 08 2020 03:53 AM
Joined: Jun 2016
Posts: 179
J
Jhyp Offline OP
Shop Shark
I did adjust the wheel cylinders so there was just a hint of drag on the drums by the shoes.

Re: 1950 3100 parking brake
Jhyp #1345645 Sat Feb 08 2020 10:17 PM
Joined: Mar 2010
Posts: 9,311
5
Master Gabster
My guess is that since you are not able to cause the shoes to contact the drums by pulling on the disconnected cables, you may not have the mechanical parts between the drums and the backing plates installed correctly.

Last edited by 52Carl; Sat Mar 14 2020 05:41 PM.
Re: 1950 3100 parking brake
Jhyp #1345655 Sun Feb 09 2020 12:13 AM
Joined: Jun 2016
Posts: 179
J
Jhyp Offline OP
Shop Shark
Thanks for you help. I'll look for a pic of properly installed mechanism and reassemble the parts accordingly.

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