Ok so this is what happened, i have a TL 2003 Magna.. I gave my friend my car to install my sound system. I get a call straight away from him saying he did something wrong.. He's tried to drill a hole into the firewall so he can put the power cable through. I'm sure there's a better way but that's not the issue. As he was drilling he has hit one of the brake lines I'm assuming? I tried to sit In the car and there's nothing in the brake pedal? What is this brake line exactly called, the car still brakes but if I drive it will it get worse? And is it a case of taking it off and putting back on again?? I really need this problem fixed ASAP, any help would be great thanks!!
For some reason I can't upload a pic? As you're looking at the engine towards the passenger side firewall there are three fuel lines ? It's the top one that has busted? Someone help please

Look at your fluid reservoir and see if one half is full and the other half is empty. If so... youve lost half of your brakes but the other half is safe and youll need a new brake line from the wreckers.

Would it be drivable? Or shouldn't drive at all?

If its the same as a TJ which I'm sure it is, all 3 lines are brake lines. Top one looks like brake master to ABS unit. Don't drive it whatever you do other wise you will destroy at least the brake master if not the car due to no brakes. Its an easy on/off job just make sure to use quality spanners or better still flare nut spanners so not to strip the pipe and you must bleed the system as well

Solid Metal Lines that go into a silver box looking thing? Brake Lines.

Solid Lines that protrude out a little bit then turn into rubber? Fuel Lines.

A picture of the damage would help alot, you can use photo bucket then use either the direct link tag or img code and post it here.

If it is the brake lines the part would need to be replaced and then the whole system will require a bleed then some new fluid.
Seriously though if someone needs to drill a hole in the firewall to run cabling through do not let them work on your car there are two very easily accessible points of entry for a power cable run, plus he probably would not use a grommet so theres a potential fire hazard aswell.

If its the same as a TJ which I'm sure it is, all 3 lines are brake lines. Top one looks like brake master to ABS unit. Don't drive it whatever you do other wise you will destroy at least the brake master if not the car due to no brakes. Its an easy on/off job just make sure to use quality spanners or better still flare nut spanners so not to strip the pipe and you must bleed the system as well

Thanks heaps mate.. Do the brake lines come as a kit or can get it separately? And how much you think they are roughly if u have an idea? Cheers

I complain about how outdated the learning material is at school! I didnt factor in ABS because it hasnt even been mentioned!
Anyway, guess Ill have to think slightly outside the box then! Wouldnt the back up system still go into effect?

Individual lines and you can ask MadMagna. He can do you an AMC member price ;)

I'd just get 1 from the wreckers if possible $5-$10 if its a self serve wreckers I'd think. Mitsu would sell them separately

Correct the "back up" system will go to work to stop the car. Usually after that the pedal has no effect. The piston in the master goes beyond a point of no return to cut the damage line off thus resulting in a ****ed master which will require either replacing or overhaul.

http://i1333.photobucket.com/albums/w632/avale5/image_zps4d3fc523.jpg

Solid Metal Lines that go into a silver box looking thing? Brake Lines.

Solid Lines that protrude out a little bit then turn into rubber? Fuel Lines.

A picture of the damage would help alot, you can use photo bucket then use either the direct link tag or img code and post it here.

If it is the brake lines the part would need to be replaced and then the whole system will require a bleed then some new fluid.
Seriously though if someone needs to drill a hole in the firewall to run cabling through do not let them work on your car there are two very easily accessible points of entry for a power cable run, plus he probably would not use a grommet so theres a potential fire hazard aswell.

posted up a pic mate
and also, where are the easier places to run the power cable through??
thanks

:roflwtf::doh::belt:

P/S footwell there is a grommet to the guard and then to the engine bay

lol..

http://www.aussiemagna.com/forums/showthread.php?t=89534

Lesson number 1. NEVER trust your car to a dickhead mate.

I recall learning that sometimes the pin that activates the brake warning light can get stuck in its position, though there was no mention of the pistons ever being at a point of no return. Springs put them back to their original position. Are new systems different to this?

Sorry, piston pushes seal to groove to either stop the piston from returning or the seal flips to seal off the damaged section. Been a long time since trade school.

For starters don't drive this car

Secondly your mate needs to keep his mits off cars, it is illegal and dangerous to run cables through fire walls

Finally, the explanation of how brakes work in this thread scares the crap out of me, I don't have the time to list it all out but there is NO back up system, you have in a magna 2 systems, one operates rhf and lhr and the ther operates the lhf and rhr. I short if one circuit drops pressure the other circuit will operate 2 wheels diagonally oppressive. Ts talk about grooves, seals etc is all incorrect. Rear piston closest to booster pulses front iston using hydraulic pressure, if the fluid in the rear chamber is lost then there is a safety back up as a bland way to call it by way of a in on the rear piston which will mechanically push the front piston. Braking will be significantly reduced and this set up is only made for an emergency stop not for driving the car even to get a repair

Op, yes mits can supply new lines as can a wrecker or even a place like ABS can make them up. Get your car towed mate, DON'T drive it. Get your idiot mate to pay for the repair and tow, know he was doing you a favour BUT he should have not touched your car as he clearly has NFI about what he is doing

Sorry I may not have explained it clearly but seals can flip in the master cylinder due to no fluid. As for the "back up" it's only to stop the car once and that's it. On the master cylinder I learnt about at trade school after the emergency stop due to the rear piston travelling over a groove in the cylinder it would flip the seal to deem the master cylinder useless.im not trying to start an argument and happy that I'm corrected

Wow! I learnt it just last year and dont recall that!
I did have a Ford which had gone into this mode and after fixing he leak and a good bleed, all was well again. Well as good as youd expect from Ford anyway!

Guys, there are many different styles of master cyl, last time I looked this was a MAGNA that we are talking about, not a Ford, a Lada or a Toyota. A MAGNA.....

Magna use a cross over style of redundancy, below is a basic image of how one of these styles of master cyl work, this is NOT a Magna cyl BUT is the same basic design. There is no lip or flip over seal or anything of such. Simply put, if the rear cyl loses fluid there is a pin on the rear piston which will allow the front piston to be moved. It is far more complex than just this but as a basic explanation will do.

End of the day the facts are simple, brake line is damaged, car can not be driven.

If you are really interested, get one from the wreckers and pull it apart. Fairly obvious how a dual circuit master cylinder works, and what happens when one circuit looses fluid.
There is no 'backup system' as such, either all 4 wheels brake, or just 2. Opposite corners.
The only backup you have is the handbrake, but if you have ever driven a car with only the handbrake, it's pretty scary and unsafe. (Clevis pin dropped out of the brake pedal, fortunately it was late at night and no traffic.)

Can someone please tell me the correct procedure to do this.. After taking the brake line off, thanks

Once the line has been removed and new line installed simple matter of bleeding the brakes

To be honest and not trying to be a smart ass, these are the only thing that will stop your car when needed, if you are not aware of how the brakes work and how to fit and bleed the line get the car towed to a shop where this can be done safely.

Brakes are the one thing you don't wanna play around with if you have no idea what you are doing.

Tow it too a Brake Professional or get a mobile mechanic out to give you a quote.

As for running the power cable there's a grommet in the bottom middle of the firewall where the main loom goes through to the car, feeding it there will bring it into the cabin above the ecu. Otherwise the best option is to remove the passenger side wheel and slash guard behind the passenger side strut tower there is a grommet, that will bring it into the wheel well and from there, theres a large grommet that will take it into the cabin via the kick panel.