Replace Coiled Front Brake Lines

[FamilyCamper]

Original post ** scroll down for walkthrough.

Does anyone have guidance or advice on replacing the two front coiled brake lines coming from the booster??

I ordered the parts from Toyota and they will come in Friday. Seems like I can get good access through the wheel well. What is the process to remove and replace these lines?

Thanks in advance.

Updated: I ordered the two brake lines from Toyota. Found from partsauq diagram. Turned out to be a simple replacement.

1. All pressure should be out of the system because the brake line is busted
2. Remove small inner splash guard liner on drivers side for access
3. Release the clamp that holds the two lines together. 10mm in a weird spot.
4. 10mm flare wrench or regular wrench if not too tight- Crack 2 fitting for each line it is clear where they go if you just follow the lines from the coils in either direction.
5. Undo one line at a time starting from the booster side and then the frame/wheel side. This is a lot easier if you have 2 people that can work together.
6. Take pictures or remember how the lines snake up so you can replace the same
7. Connect both new lines at the booster side and have someone press the brake with the car turned to start position without starting the car. After fluid fills the line, quickly connect it to the frame/wheel side so that little to no air enters the system.
8. Repeat for the other line.
9. All the connections tighten down snug but not too tight. With the key off, Depress the brake 40 times to release all pressure and time the booster motor building pressure to ensure all is functioning well. Check for leaks and hit a test drive. Check for leaks again.

All set!! Lots of steps but very simple overall. You could definitely bleed the brakes afterwards if you feel there is air in the lines.

 

[Patron100LC]

Interested, sorry no advice, please update with results, I have 1 of them rusting next to the master. Want to know if the dealer parts fit fine.

Pretty sure is as simple as disconnecting and replacing with new, bleed system normally.

Pump brake pedal 40 times to release pressure, ignition off, before starting.

Ok, some advice..

 

[excessive]

the driver side will be easy, the passenger side is going to be a bit of a challenge.

 

[FamilyCamper]

Interested, sorry no advice, please update with results, I have 1 of them rusting next to the master. Want to know if the dealer parts fit fine.

Pretty sure is as simple as disconnecting and replacing with new, bleed system normally.

Pump brake pedal 40 times to release pressure, ignition off, before starting.

Ok, some advice..

Updated! The brake line that is further to the rear had the slightest different angle where it attached to the fitting on the frame side but it still worked fine.

 

[Patron100LC]

Updated! The brake line that is further to the rear had the slightest different angle where it attached to the fitting on the frame side but it still worked fine.

Thanks for that. Ordered online or locally? Seems like a pretty fragile part to be shipped and handled by the usual white glove employees of the carrier companies.

 

[FamilyCamper]

Thanks for that. Ordered online or locally? Seems like a pretty fragile part to be shipped and handled by the usual white glove employees of the carrier companies.

Ordered locally only due to time constraints. They are coated metal lines so I think they would hold up pretty well as long as they were packaged w care.

 

[LX Newbie]

I just inherited a 2000 lx470. It was a Pa. truck, so the bottom is pretty rusty.

The coiled brake line for the front passenger side is rusted through, and the dealers are telling me that the part has been discontinued.

It looks like I will eventually have to replace all of the brake lines, so I would appreciate any advice on an aftermarket source.

The part number for the OEM line is 47311.

I am still investigating the truck, but I have already replaced the hard transmission cooler line. Looks like the previous (original) owner already did the AHC delete.

Thank you,
Clarence

 

[FamilyCamper]

The coiled brake line for the front passenger side is rusted through, and the dealers are telling me that the part has been discontinued.

cool that you got the truck! Rust sucks !
I would insert your vin into partsauq to verify the correct part number on the diagrams but i do not believe the dealer that it is discontinued. Maybe they don't make them anymore but they're definitely available. I just got mine for my 2000 LC and I think it's the same part. Check through the other brake lines as well. My truck is somewhat rusty and I have had 2 lines fail so far. Gathering parts to replace most all the other lines. Also maybe post a picture of the part so others can verify you are looking at the correct part?

 

[cartelcruiser]

I just inherited a 2000 lx470. It was a Pa. truck, so the bottom is pretty rusty.

The coiled brake line for the front passenger side is rusted through, and the dealers are telling me that the part has been discontinued.

It looks like I will eventually have to replace all of the brake lines, so I would appreciate any advice on an aftermarket source.

The part number for the OEM line is 47311.

I am still investigating the truck, but I have already replaced the hard transmission cooler line. Looks like the previous (original) owner already did the AHC delete.

Thank you,
Clarence

Did you ever find the correct Part number? Just took ownership of an 03 LX 470, coincidentally also from PA...also rusted to hell and back, and constantly seeping fluid from a crack in this coiled hose. Whole reservoir has practically emptied in my driver since 11am today. Can't seem to find the correct replacement for it either.

 

[FamilyCamper]

Did you ever find the correct Part number? Just took ownership of an 03 LX 470, coincidentally also from PA...also rusted to hell and back, and constantly seeping fluid from a crack in this coiled hose. Whole reservoir has practically emptied in my driver since 11am today. Can't seem to find the correct replacement for it either.

Is the part number different than the LC? When I replaced mine I was able to get the part straight from dealership when I called them and told them what line it was. Also have you tried putting your vin in partsauq and get the number from there and then pasting it into google to search eBay and other sites for the part?

 

[cartelcruiser]

Is the part number different than the LC? When I replaced mine I was able to get the part straight from dealership when I called them and told them what line it was. Also have you tried putting your vin in partsauq and get the number from there and then pasting it into google to search eBay and other sites for the part?

Yea I’m familiar, it just has multiple different names, images, hose #s, etc. was hoping someone who had replaced it previously may have had the number.

 

[cartelcruiser]

Part Numbers for the right side

Right Front Tube No. 2 - 47312-6A160
Right Rear Tube No. 3 - 4732350300

 

[Patron100LC]

There’s someone in the buy/sell section selling a full kit with all brake lines and components. Might be more than what you need but if 1 is rusted, the rest will be soon.

 

[cartelcruiser]

There’s someone in the buy/sell section selling a full kit with all brake lines and components. Might be more than what you need but if 1 is rusted, the rest will be soon.

Hey, thanks for the heads up! I’ll find it, may not be a bad idea to replace ALL of mine, being a PA truck (now in Texas) it’s only a matter of time.

 

[FamilyCamper]

Hey, thanks for the heads up! I’ll find it, may not be a bad idea to replace ALL of mine, being a PA truck (now in Texas) it’s only a matter of time.

Honestly would recommend. As this thread started with my replacing one line it's the third I've had to do due to rust holes and at this point I've replaced most of mine. Some of the lines are discontinued and hard to find so having the full set is great if you aren't in too deep with replacing some already.

 

[Red Beard]

Theoretically… could I cap or shut off the leaky metal coil line and drive it home? I’m in central PA, 2.5 hours from home. Looks like I have at least 1 leaking on the driver side suddenly.

 

[cartelcruiser]

Theoretically… could I cap or shut off the leaky metal coil line and drive it home? I’m in central PA, 2.5 hours from home. Looks like I have at least 1 leaking on the driver side suddenly.

View attachment 4223801

That’s a pretty good size leak. You’ve also already got air in the system.
Are you asking if you could just pinch that one off and roll on three wheels braking?

 

[Red Beard]

That’s a pretty good size leak. You’ve also already got air in the system.
Are you asking if you could just pinch that one off and roll on three wheels braking?

Yes exactly that. Mostly highway driving. Was thinking a vise grip or something.

It’s either that or I get a temporary metal line put in by Monroe or something.

 

[cartelcruiser]

Yes exactly that. Mostly highway driving. Was thinking a vise grip or something.

It’s either that or I get a temporary metal line put in by Monroe or something.

You could potentially overnight delivery an Amazon copper brake line kit. I think that may be your best bet. I personally would not clamp that off and drive as is. What happens if the pressure builds up and does more damage?

Or go the Monroe route. Definitely bleed it though before heading home. An ABS siren for longer than 5 minutes will damn near deafen you.

 

[Red Beard]

Good direction. I’ve never done brakes before. If I were home, I would finally put on the stainless lines I got from Slee a few years ago