Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: Reassembly

Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual / Brake / Brake (front) / Front Brake / Reassembly

REASSEMBLY

CAUTION / NOTICE / HINT

HINT:

Perform the removal and installation of the front disc brake piston, cylinder boot and piston seal one side at a time.

PROCEDURE

1. TEMPORARILY TIGHTEN FRONT DISC BRAKE BLEEDER PLUG

HINT:

Fully tighten the front disc brake bleeder plug after bleeding the system.

2. INSTALL FRONT DISC BRAKE BLEEDER PLUG CAP

3. INSTALL PISTON SEAL

(a) Apply lithium soap base glycol grease to the entire circumference of a new piston seal.

Lithium Soap Base Glycol Grease

(b) Install the piston seal to the front disc brake cylinder.

NOTICE:

Securely install the piston seal into the groove of the front disc brake cylinder.

4. INSTALL FRONT DISC BRAKE PISTON (for TMC Made)

(a) Apply a light layer of lithium soap base glycol grease to the entire circumference of a new cylinder boot.

*1

Cylinder Boot

*2

Front Disc Brake Piston

Lithium Soap Base Glycol Grease

(b) Install the cylinder boot to the front disc brake piston.

NOTICE:

Securely install the cylinder boot into the groove of the front disc brake piston.

(c) Apply a light layer of lithium soap base glycol grease to the contact surfaces of the front disc brake piston, and install it to the front disc brake cylinder.

NOTICE:

Do not forcibly install the front disc brake piston into the front disc brake cylinder.

5. INSTALL CYLINDER BOOT (for TMC Made)

(a) Install the cylinder boot to the front disc brake cylinder as shown in the illustration.

NOTICE:

  • Securely install the cylinder boot into the groove of the front disc brake cylinder and front disc brake piston.
  • Do not damage the cylinder boot.

*1

Cylinder Boot

*2

Front Disc Brake Piston

*3

Front Disc Brake Cylinder

6. INSTALL CYLINDER BOOT (for TMMC Made)

(a) Apply a light layer of lithium soap base glycol grease to the entire circumference of a new cylinder boot and front disc brake piston.

*1

Cylinder Boot

*2

Front Disc Brake Piston

Lithium Soap Base Glycol Grease

(b) Install the cylinder boot to the front disc brake piston as shown in the illustration.

NOTICE:

Do not damage the cylinder boot.

7. INSTALL FRONT DISC BRAKE PISTON (for TMMC Made)

(a) Install the front disc brake piston and cylinder boot to the front disc brake cylinder as shown in the illustration.

NOTICE:

  • Securely install the cylinder boot into the groove of the front disc brake cylinder and front disc brake piston.
  • Do not damage the cylinder boot.

*1

Cylinder Boot

*2

Front Disc Brake Piston

*3

Front Disc Brake Cylinder
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    Installation
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