LX 570 V8-5.7L (3UR-FE) (2010)
Brake Bleeding: Service and Repair
BRAKE SYSTEM (OTHER): BRAKE FLUID: BLEEDING
NOTICE:
*
Wash off brake fluid immediately if it comes into contact with a painted surface.
*
If the brake pedal is depressed with the reservoir cap removed, brake fluid will spatter.
HINT
*
If any work is done on the brake system or if air in the brake lines is suspected, bleed the air from the system.
*
When bleeding, keep the amount of the fluid between the MIN and MAX lines on the reservoir.
1. FILL RESERVOIR WITH BRAKE FLUID
Fluid:
SAE J1703 or FMVSS NO. 116 DOT3
2. BLEED BRAKE BOOSTER WITH ACCUMULATOR PUMP ASSEMBLY
(a) Turn the engine switch on (IG) and operate the pump. The pump will automatically stop after several seconds.
(b) Turn the engine switch off, and fully depress the brake pedal 20 times to release the pressure in the accumulator.
HINT
After the pressure in the accumulator is released, there will be less pedal resistance and the pedal stroke will lengthen.
(c) Repeat the previous 2 steps 5 times.
(d) After releasing the pressure from the accumulator, check that the pump operating time is less than 18 seconds. If it takes more than 18 seconds,
repeat the previous step.
3. BLEED BRAKE LINE
(a) Bleed air from the front brake system.
(1) Turn the engine switch on (IG).
HINT
Perform this procedure with the engine switch on (IG), as the large piston of the master cylinder does not stroke with the engine
switch off.
(2) Connect a vinyl tube to the brake caliper.
(3) Depress the brake pedal several times, then loosen the bleeder plug with the pedal held down (procedure "A").
NOTICE:
While performing the air bleeding procedure, make sure that the amount of fluid in the reservoir remains above the MIN line.
(4) At the point when the fluid stops coming out, tighten the bleeder plug, then release the brake pedal (procedure "B").
Torque : 11 Nm (110 kgf-cm, 8 ft-lbf)
(5) Repeat procedures "A" and "B" until all the air in the fluid has been bled out.
(6) Repeat the above procedures to bleed the other front brake line.