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Line Lock Parking Brake

Discussion in 'Builds and Fabricators Forum' started by mpc, Jul 15, 2006.

  1. Jul 15, 2006
    mpc

    mpc Member

    Vista, CA 92083...
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    Aug 18, 2005
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    779
    Any of you using Line Locks for your paking brake? If so, do you use it on the front, rear, or both? And where did you mount it for easy access? I'm wanting to supplement my transfercase parking brake.
     
  2. Jul 15, 2006
    duke54

    duke54 Member

    JACKMAN MAINE
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    Apr 15, 2003
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    Front one's.;)
     
  3. Jul 15, 2006
    BlueFlu

    BlueFlu past owner of some ecj5's

    Hermitage, TN
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    Yep front. Had them on my 360 425hp Dart and my 440 Road Runner.
    Made killer burnouts easy. R)
     
  4. Jul 15, 2006
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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    Nov 6, 2002
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    Neither legal nor safe for a "parking brake". Anythign that relies on hydraulic pressure to maintain holding power is going to leak down over time, that's why the OEM parking brakes are all mechanical, especially so for disc brake applications.

    They are GREAT for doing burnouts though, I had 'em on the fronts in my big-block Buick GS and my 340x6 Duster. ;)
     
  5. Jul 15, 2006
    mpc

    mpc Member

    Vista, CA 92083...
    Joined:
    Aug 18, 2005
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    779
    Just wanting to supplement my transfer case brake. I plan on using both at the same time. I just cleaned up the t/c, new gaskets and seals and got the brake cleaned and working properly, but it still has a small leak :rofl: .
    Eventually the pads will get covered in oil again and not hold and I'm not anxious to take it apart again.
     
  6. Jul 18, 2006
    mtndewmaniac66

    mtndewmaniac66 Down to Earth!

    Vernal, Utah.
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    May 25, 2006
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    178
    Line locs were primarily used for offroad and industrial use, like that used on dragstrips and forklifts.
     
  7. Jul 18, 2006
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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    There are actually two types: A "line lock" and what used to be sold as a "Mico-Lock". The "line-lock" requires 12v to be applied to the solenoid valve to maintain hydraulic pressure, and the "Mico-Lock" needs 12v only to apply. Once there is pressure against the valve, you can remove the 12v and it will hold until you create greater pressure against the solenoid valve to release it.

    The "Mico-Lock" units used to be pretty common around here, especially on vehicles with snow plows or winches. Lots of tow-trucks had them also. I haven't seen one installed in years though. Wonder if that coincides with the advant of anti-lock brake systems?
     
  8. Jul 18, 2006
    bowtie48

    bowtie48 New Member

    Bend, OR
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    Apr 23, 2006
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  9. Jul 18, 2006
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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  10. Jul 18, 2006
    MOP

    MOP Active Member

    Pullman, WA
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    Sep 25, 2003
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    1,131


    Now that's the ticket....I have wanted a mico-lock for some time but didn't want to shell out the cash. I am thinking one of these may be the ticket. My placebo-brake is only good on very mild slopes.
     
  11. Jul 18, 2006
    runnamuck

    runnamuck look out!

    hickory, nc
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    Nov 7, 2005
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    223
    i got a mico-lock on one of my heeps. it is fully mechanical. lever and cable to close the lines, it does both. got it from some tow truck supply, peirce maybe. it also has switchs that you can hook up to your horn, it will blow if the pressure drops. it leaks down thou, after like a week of begin set.:rofl: don't remember the cost but it was more than 35 bucks, 200 maybe.
     
  12. Jul 18, 2006
    MOP

    MOP Active Member

    Pullman, WA
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  13. Jul 18, 2006
    bowtie48

    bowtie48 New Member

    Bend, OR
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    Apr 23, 2006
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    I kind of thought that's what you were asking about. I happened to randomly find that one doing a google search. I'm thinking I will use a similar one, like what they use on forklifts, that has a locking lever. I still have to completely rebuild and upgrade my whole brake system before I worry about it.
     
  14. Jul 18, 2006
    mpc

    mpc Member

    Vista, CA 92083...
    Joined:
    Aug 18, 2005
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    779
    Yep, this is the type I was refering to. I got one from the local dune buggy shop for $35. I'm just trying to find a good place to install it so it's handy yet also out of the way. Also trying to minimize the amount of brake line I have to run. I guess the dash is the obvious place. Where else have you all seen them mounted?
     
  15. Jul 19, 2006
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    Mar 4, 2003
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    Console between seats is another place I have seen them... Just don't let the dog step on it while your counting on it being engaged. Smokey took a ride - funny thing was he was sitting in the drivers seat and had this look on his face like "Damn - I finally figured out how to make this thing GO" R)

    Course the 'Owner' (Jeff) was not pleased that we had to pull his rig out of a beaver pond. Oh, Smokey caught a German Brown that swam into the floorboards while it was in the pond - all in all the highlight of the trip :)
     
  16. Jul 19, 2006
    JeepTherapy

    JeepTherapy Sponsor

    Negaunee, Michigan
    Joined:
    Jun 29, 2006
    Messages:
    695
    I have an electric line lock that I am going to install on the front disk brakes. I want it for winching out disabled vehicles with the motor runing and me outside the jeep. I also have chocks for the front wheels to use in conjunction. One of these days I may even get it installed :)
     
  17. Jul 19, 2006
    tinker

    tinker GNGPN

    winnipeg,manitoba...
    Joined:
    Feb 17, 2005
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    158
    Electric line locks work good but will wear down the battery if it's not running.The dash button is a better idea .
     
  18. Jul 23, 2006
    Canadian 62

    Canadian 62 Member

    Kelowna BC
    Joined:
    Jul 6, 2006
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    61
    Also good on the front brakes when you are winching someone. Parking holds the rear...line lock keeps the fronts from rolling.
    Mine looks the same as in the photo and was purchase a few years back from JC Whitney for $25. part number 73YN4432T
     
  19. Jul 30, 2006
    thall

    thall Member

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    the mechanical valve....

    see if they are configured "pull to apply"......... would not be a good thing to have someone push by mistake while driving down the road...

    i also remember the lever acutated ones.....

    the electric ones... mostly on drag cars... 12v to apply... would be a drain on battery used as a parking brake in the literal sense of the word.
     
  20. Jul 30, 2006
    runnamuck

    runnamuck look out!

    hickory, nc
    Joined:
    Nov 7, 2005
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    i pretty sure they all are pull to apply. they are just valves. you have to pressurize the braking system for them to hold. however, if the are pulled without pressurization, i'm sure they would not let pressure get to the calipers/wheel cylinders. :shock: the key to idiot-proof this is not to let idiots drive you jeep; and keep the controls on the driver's side, away for idle hands in the passenger's seat.
     
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