Front Brake Inspection

Brake. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Brake. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. CHECK BRAKE CYLINDER AND PISTON

  2. CHECK PAD LINING THICKNESS

  3. CHECK FRONT DISC BRAKE PAD SUPPORT PLATE

  4. CHECK DISC THICKNESS

  5. CHECK DISC RUNOUT

Front Brake -- Inspection



1. CHECK BRAKE CYLINDER AND PISTON

  1. Check the cylinder bore and piston for rust or scoring.
    If necessary, replace the cylinder and piston.



2. CHECK PAD LINING THICKNESS


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. Using a ruler, measure the pad lining thickness.

    Standard thickness:
    12.0 mm (0.472 in.)
    Minimum thickness:
    1.0 mm (0.039 in.)
    If the pad lining thickness is less than the minimum, replace the pad.


3. CHECK FRONT DISC BRAKE PAD SUPPORT PLATE

  1. Check the 4 plates as follows. If necessary, replace the plates.

    1. Use brake cleaner to clean the pad of the pad support plate and cylinder mounting contact surface. Inspect for deformation, cracks, rust and foreign matter that is difficult to remove.

    2. Use brake cleaner to clean the pad support plate contact surface of the cylinder mounting. After installing the pad support plate to the cylinder mounting, inspect for looseness and deformation.

    3. After installing the pad, inspect if the pad falls off easily (due to the spring force of the pad support plate).



4. CHECK DISC THICKNESS


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. Using a micrometer, measure the disc thickness.

    Standard Thickness:
    Model
    		Specified Condition
    10.83 inch disc
    		25.0 mm (0.984 in.)
    11.70 inch disc
    		28.0 mm (1.102 in.)
    Minimum Thickness:
    Model
    		Specified Condition
    10.83 inch disc
    		22.0 mm (0.866 in.)
    11.70 inch disc
    		25.0 mm (0.984 in.)
    If the disc thickness is less than the minimum, replace the disc.


5. CHECK DISC RUNOUT


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. Check the axle hub bearing (RAV4_ACA30 RM00000227M002X_01_0001.html).

  1. Tighten the disc with the 5 hub nuts.

    Torque:
    103 N*m{1050 kgf*cm, 76 ft.*lbf}

  1. Using a dial indicator, measure the disc runout 10.0 mm (0.39 in.) from the outer edge of the disc.

    Maximum disc runout:
    0.05 mm (0.0020 in.)
    If the runout is more than the maximum, change the installation positions of the disc and axle so that the runout is the smallest possible. If the runout is more than the maximum even when the installation positions are changed, grind the disc. If the disc thickness is less than the minimum, replace the disc.

  1. Remove the 5 hub nuts and disc.