Another Line Lock Question

njk53 · 06-15-2009, 08:52 PM

What would be the cause of a line lock not holding the car properly? When I set it, you can feel the solenoid click and engage the front brakes but, when you do a burn out it doesn't hold the car in place like it should. The line lock solenoid is a Biondo w/ a Hurst Switch. I was told to check for air in the lines which I will do. If it isn't air in the lines what other things should I check?

larry dowty · 06-15-2009, 10:46 PM

make sure you have it going the right direction?

rallye bob · 06-16-2009, 05:01 AM

Hold the switch, and pump the brakes a couple of times....

njk53 · 06-16-2009, 07:46 PM

Larry:

Do you mean direction of flow? Also, is it common that you have to pump the brakes a couple of time before you set the switch?? Someone else suggested the same thing.

larry dowty · 06-16-2009, 08:14 PM

yes they are directional, i know from experience i just had the exact problem with my new stocker and it was the dork that built the car LOL turned it around and the brakes work perfect

Mark Yacavone · 06-16-2009, 10:56 PM

Those things are rebuildable. Unscrew the brass part from the coil portion. Pull the piston out. There is a little seal that covers the orifice in the middle. Check the condition of the seal ,and that it's not pushed back too far.
Call Sal and see if he'll sell you a kit.

Harry 6674 · 06-17-2009, 09:28 AM

Thats where a brake pressure guage comes in handy. Hold the button and pump the brakes to build pressure. Same pressure every time. Also make sure your not sliding your front tires.

GTO/GN · 06-17-2009, 04:53 PM

Does the line lock solenoid allow pressure to pass through it in one direction? Cause the advise being given here is to " hold the button and pump the brakes"... All these years I've been putting the car in netrual, pumping the pedal then holding the pedal hard, then pressing the button.. My line locks have always held the car without any problems. I don't think after all these years I would change my routine, but was just wondering..

njk53 · 06-17-2009, 08:15 PM

The line lock unit is new. I will check the direction of flow tomorrow. I will alos try pumping the brakes. Thanks to all for the suggestions.

rallye bob · 06-18-2009, 06:25 AM

Quote:

Originally Posted by GTO/GN

Does the line lock solenoid allow pressure to pass through it in one direction? Cause the advise being given here is to " hold the button and pump the brakes"... All these years I've been putting the car in netrual, pumping the pedal then holding the pedal hard, then pressing the button.. My line locks have always held the car without any problems. I don't think after all these years I would change my routine, but was just wondering..

I have a Hurst line lock and yes it is like a one way valve when the button is on.....

06-15-2009, 08:52 PM	#1
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Another Line Lock Question What would be the cause of a line lock not holding the car properly? When I set it, you can feel the solenoid click and engage the front brakes but, when you do a burn out it doesn't hold the car in place like it should. The line lock solenoid is a Biondo w/ a Hurst Switch. I was told to check for air in the lines which I will do. If it isn't air in the lines what other things should I check? __________________ Nelson Kowal Stock 345

06-15-2009, 10:46 PM	#2
larry dowty Member Join Date: Jan 2005 Location: chewelah wa Posts: 283 Likes: 0 Liked 11 Times in 4 Posts	Re: Another Line Lock Question make sure you have it going the right direction? __________________ larry dowty 6388 SS

06-16-2009, 05:01 AM	#3
rallye bob Member Join Date: Sep 2006 Location: Genoa, Illinois Posts: 489 Likes: 9 Liked 6 Times in 4 Posts	Re: Another Line Lock Question Hold the switch, and pump the brakes a couple of times....

06-16-2009, 07:46 PM	#4
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Re: Another Line Lock Question Larry: Do you mean direction of flow? Also, is it common that you have to pump the brakes a couple of time before you set the switch?? Someone else suggested the same thing. __________________ Nelson Kowal Stock 345

06-16-2009, 08:14 PM	#5
larry dowty Member Join Date: Jan 2005 Location: chewelah wa Posts: 283 Likes: 0 Liked 11 Times in 4 Posts	Re: Another Line Lock Question yes they are directional, i know from experience i just had the exact problem with my new stocker and it was the dork that built the car LOL turned it around and the brakes work perfect __________________ larry dowty 6388 SS

06-16-2009, 10:56 PM	#6
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,809 Likes: 2,900 Liked 5,113 Times in 1,948 Posts	Re: Another Line Lock Question Those things are rebuildable. Unscrew the brass part from the coil portion. Pull the piston out. There is a little seal that covers the orifice in the middle. Check the condition of the seal ,and that it's not pushed back too far. Call Sal and see if he'll sell you a kit. __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

06-17-2009, 09:28 AM	#7
Harry 6674 Senior Member Join Date: Dec 2006 Posts: 589 Likes: 0 Liked 0 Times in 0 Posts	Re: Another Line Lock Question Thats where a brake pressure guage comes in handy. Hold the button and pump the brakes to build pressure. Same pressure every time. Also make sure your not sliding your front tires.

06-17-2009, 04:53 PM	#8
GTO/GN Junior Member Join Date: Apr 2009 Location: Florida Posts: 38 Likes: 0 Liked 0 Times in 0 Posts	Re: Another Line Lock Question Does the line lock solenoid allow pressure to pass through it in one direction? Cause the advise being given here is to " hold the button and pump the brakes"... All these years I've been putting the car in netrual, pumping the pedal then holding the pedal hard, then pressing the button.. My line locks have always held the car without any problems. I don't think after all these years I would change my routine, but was just wondering..

06-17-2009, 08:15 PM	#9
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Re: Another Line Lock Question The line lock unit is new. I will check the direction of flow tomorrow. I will alos try pumping the brakes. Thanks to all for the suggestions. __________________ Nelson Kowal Stock 345