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Jul 21st, 2025 | | | | Joined: Oct 2016 Posts: 9 New Guy | | New Guy Joined: Oct 2016 Posts: 9 | New members here trying to put back together a truck we didn't take a part  We believe this to be the original parking brake bracket to hold the cable at the frame end? Photobucket album We are guessing this actuates the original parking brakes? Can't figure out what else it might be? Photobucket album If we are correct, we are planning on removing all of this and installing a line lock to replace the parking brake, any reason I shouldn't do this that anyone can think of? We also have this contraption that we are guessing are related to the original pedal assembly? Again, planning on removing and replacing with more modern equipment. Photobucket Album Hoping we linked the photos correctly  We really appreciate any insight.
Michael
1954 Chevy Truck in process of completion
| | | | | Joined: Mar 2000 Posts: 1,229 Red dot, center of chest ... | | Red dot, center of chest ... Joined: Mar 2000 Posts: 1,229 | 1) Yes, that is the bracket that holds the cable to the frame.
2) Yes, that is the parking brake actuator.
I don't know what a line lock is, so I can't answer that.
3) Yes, the straight piece is for the foot brake and the bent one is for the emergency brake. | | | | | Joined: Oct 2016 Posts: 9 New Guy | | New Guy Joined: Oct 2016 Posts: 9 | Thank you VERY much!
OK, so all of that will be removed before the cab goes back on.
Line Lock is a "hydraulic" lock for the brakes that goes in the rear brake lines traditionally.
Michael
Michael
1954 Chevy Truck in process of completion
| | | | | Joined: Feb 2001 Posts: 1,094 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 1,094 | A line lock is not designed for use as a parking brake. It is activated by battery power and will need battery power the hole time you are using it. I don't think it was designed for continuous use, you may want to check that out with the maker, before you use it as a parking brake.
Tommy
59 apache 1/2t
261 short stepside
| | | | | Joined: Oct 2016 Posts: 9 New Guy | | New Guy Joined: Oct 2016 Posts: 9 | A line lock is not designed for use as a parking brake. It is activated by battery power and will need battery power the hole time you are using it. I don't think it was designed for continuous use, you may want to check that out with the maker, before you use it as a parking brake. Thank you for the tip, I will do some more research before we remove anything we may want.
Michael
1954 Chevy Truck in process of completion
| | | | | Joined: Dec 2015 Posts: 2,061 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,061 | I thought a line lock went on the front brakes, used for drag racing so you can lock the front wheels and spin the rear to warm up your slicks. Never seen one used in the rear wheels...... unless you are talking the old Mico-brakes like were used on milk trucks. I do not believe those were not designed for use as a park brake either though. | | | | | Joined: Nov 2008 Posts: 465 'Bolter | | 'Bolter Joined: Nov 2008 Posts: 465 | I thought a line lock went on the front brakes, used for drag racing so you can lock the front wheels and spin the rear to warm up your slicks. Never seen one used in the rear wheels...... unless you are talking the old Mico-brakes like were used on milk trucks. I do not believe those were not designed for use as a park brake either though. I thought the same thing, We just disconnected rear brakes (temporarily)
Last edited by just-a-hacker; 10/27/2016 6:12 PM.
| | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Besides that, they are not legal.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Mar 2010 Posts: 10,059 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,059 | 1)
3) Yes, the straight piece is for the foot brake and the bent one is for the emergency brake. The bent one is for the clutch pedal. Carl
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Mar 2010 Posts: 10,059 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,059 | 2extreme,
First of all, your name scares me, but your approach to building your truck scares me even more.
To ease my mind, please explain to us what kind of build you are planning on, and what your building experience is.
Before you consider cutting out components, you need to have a plan as to what you will be replacing these parts with.
What kind of brake system including the pedal are you using (original or custom drop-down)?
What will you use for a parking brake? (lock, as I understand them, is not an option).
Please don't be offended by my words, as none is intended.
Welcome to the Bolt, BTW!
Carl
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Oct 2002 Posts: 4,066 Bolter | | Bolter Joined: Oct 2002 Posts: 4,066 |
Redryder pixMy HotrodA veteran - whether active duty, retired, national guard, or reserve - is someone who, at one point in his or her life, wrote a blank check made payable to The 'United States of America', for an amount of "up to and including my life."I am fighting cancer and I am winning the fight | Pain is part of life; misery is an option. | | | | | Joined: Jul 2000 Posts: 2,115 Insomniac | | Insomniac Joined: Jul 2000 Posts: 2,115 | Hmmm. What you guys call a "parking" brake, I have always called an "emergency" brake. The emergency brake is used to stop you if the hydraulic brakes fail and a line lock gadget would be useless in that event.
Gord 🇨🇦
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1954 1/2 ton 235 4 speed
| | | | | Joined: May 2015 Posts: 9,830 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 9,830 | Back in the old days, parking brakes could be used in an emergency. The hand brake on my Model A could lock up both rear tires. It used a separate circular shoe covering about 330 degrees, and had a toggle type actuator that spread the shoe against the drum.
The parking brake on my current truck won't even keep it from rolling back out of the driveway, so would be pretty much useless as far as slowing the truck down. I would hesitate to even refer to it as an emergency brake.
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: Oct 2016 Posts: 9 New Guy | | New Guy Joined: Oct 2016 Posts: 9 | The screen name is one I have had for a LONG time, nothing specific to this forum. I have built several vehicles from stripped down, just nothing that I didn't take apart myself or this vintage. I have done full engine builds, gear installs, etc, so I am not new to the work or making sure everything works together and properly. I have had a line lock in a 4x4 Jeep and cutting brakes in another. Not sure yet exactly what we are going to use yet for the parking brake (there will be one of some kind) but I a looking more likely at a new style ratchet pedal assembly currently but am also still considering a line lock either in adition to or as an alternative (still researching). All of the other pedals and assemblies are being replaced with more modern higher performance parts that are designed to work with 4 wheel disks (yes, drop down pedal for the brake with adjustability for front to rear bias). I hope this puts you guys at ease  Not intending on scaring anyone Michael
Michael
1954 Chevy Truck in process of completion
| | | | | Joined: Mar 2010 Posts: 10,059 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,059 | Thanks for getting back to us. I'm not scared anymore! I hear you about putting something back together which someone else took apart. The Chevrolet Truck Shop Manual will come in handy for you even if you don't go stock. Carl
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Sep 2001 Posts: 29,262 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,262 | Hmmm. What you guys call a "parking" brake, I have always called an "emergency" brake. The emergency brake is used to stop you if the hydraulic brakes fail and a line lock gadget would be useless in that event. Yes, you could use that original parking brake in an emergency, but GM called it a parking brake (in 1954 - the original poster's year). | | |
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