Lexus ES manuals

Lexus ES: Inspection

INSPECTION

PROCEDURE

1. INSPECT BRAKE CYLINDER AND PISTON

(a) Check the front disc brake cylinder bore and front disc brake piston for rust and scoring. If necessary, replace the front disc brake cylinder assembly and front disc brake piston.

2. INSPECT PAD LINING THICKNESS

(a) Using a ruler, measure the front disc brake pad lining thickness.

Standard Thickness:

11.0 mm (0.433 in.)

Minimum Thickness:

1.0 mm (0.0394 in.)

HINT:

  • If a front disc brake pad lining thickness is less than the minimum thickness, replace the front disc brake pads.
  • Be sure to check the front disc thickness when replacing the front disc brake pads with new ones.

*a

Ruler

3. INSPECT FRONT DISC BRAKE PAD SUPPORT PLATE

(a) Make sure that the front disc brake pad support plates have sufficient rebound, no deformation, cracks or wear, and that all rust and dirt is cleaned off. If necessary, replace the front disc brake pad support plates.

(b) Before installing the front disc brake pads, check that the brake pad support plates have spring force.

4. INSPECT DISC THICKNESS

(a) Using a micrometer, measure the front disc thickness.

Standard Thickness:

28.0 mm (1.10 in.)

Minimum Thickness:

25.0 mm (0.984 in.)

HINT:

If the front disc thickness is less than the minimum thickness, replace the front disc.

*a

Micrometer

5. INSPECT DISC RUNOUT

(a) Inspect the front axle hub bearing looseness and front axle hub runout.

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(b) Temporarily install the front disc with the 5 hub nuts.

Torque:

103 N·m {1050 kgf·cm, 76 ft·lbf}

(c) Using a dial indicator with magnetic base, measure the disc runout 10 mm (0.394 in.) from the outer edge of the front disc.

Maximum Disc Runout:

0.05 mm (0.00196 in.)

NOTICE:

Keep the magnet of the dial indicator free from the front speed sensor.

HINT:

If the runout exceeds the maximum value, change the installation position of the front disc to minimize the runout. If the runout exceeds the maximum even when the installation position is changed, grind the front disc. If the front disc thickness is less than the minimum, replace the front disc.

*a

Dial Indicator with Magnetic Base

(d) Remove the 5 hub nuts and front disc.

READ NEXT:

 Installation

INSTALLATION CAUTION / NOTICE / HINT NOTICE: Immediately after installing the brake pads, the braking performance may be reduced. Always perform a road test in a safe place while paying attention t

 Reassembly

REASSEMBLY PROCEDURE 1. TEMPORARILY TIGHTEN FRONT DISC BRAKE BLEEDER PLUG (a) Temporarily install the front disc brake bleeder plug to the front disc brake cylinder. HINT: Fully tighten the front disc

 Removal

REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during fro

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