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Hello, first you Toyota has dual braking system. It goes like this: Left front
brake with right rear brake, the right front brake with left rear brake. This a
braking safety system that has been incorporated in auto/trucks for a few years
now. If brake line is broken. loose wheel caliper, blow caliper piston, any
thing that happens to the brake system. You will still have two wheels that have
their hydraulic system. Also, the emergency brake will a manual system for the
rear wheels.
Why do you need to change your auto brake lines? That valve you are talking
about is a load stabilizer valve. It used to limit the amount of hydraulic fluid
as more load is place in the rear of your Toyota. Example. by press on the brake
pedal, it activates hydraulic pressure to the four wheel disk braking system.
The braking system needs to stabilize the hydraulic pressure to the wheel to
keep the vehicle moving in a forward motions. Now, by loading the rear of the
vehicle this transfer the load disposition of the vehicle by making it heaver in
the rear. Therefore, the load compensator valve limit the amount of hydraulic
pressure to the rear brakes.
Another thing to remember about this rear load valve, they will get plugged.
and the vehicle will not have enough braking pressure for the rear wheels. I
hope I answer you question about this load portion valve in the rear of Toyota.
GB...stewbison
Make sure the rear brakes are adjusted and also make sure there are no leaks. if there are no leaks then you have air in the system or a bad mastercylinder, rebleed the brakes, have someone inside pumping the pedal three times every time, then start at the right rear wheel and bleed it four times, each time have them pump pedall three times and hold it down, then go to left wheel and do the same then the right front then left front. to make sure you dont run master dry top off the fluid after every wheel, then adjust the rear brakes, and after that if pedal is low replace the master but you may just have air in the system, and make sure there are no leaks on any line. hope this helps.
Not knowing exactly what year & model makes this a question that really cant be answered correctly. Some car years have drum brakes in the rear & some have disk, some have a single line from the master the goes to the front & rear & each "T"'s off in the middle letting equal pressure to each. Some have an individual line right from the master cylinder to each wheel. There are even systems called X systems that apply pressure in an "X" configuration (L front-rear RT / RT front.-rear L ) To get a more accurate answer, the make model & year should be listed as well if it has 4 wheel disk or not.
It's the same as any other car or truck. Simply cut the rubber off & there's a nut,like any other brake line. Loosen the lines as you would for any job. Now you say the lines are rusted,if they're that bad then you'll need to replace them from front to rear. This requires a tubing bender(hand held) & a doulble flare tool & unions. You can forget about that "expensive" part. It's a brake balance controler & never goes bad.
thats so easy to do why are you having problems
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