Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Reassembly

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Brake / Brake System (other) / Brake Master Cylinder / Reassembly

REASSEMBLY

PROCEDURE

1. INSTALL MASTER CYLINDER RESERVOIR GROMMET

(a) Apply a light layer of lithium soap base glycol grease to the entire circumference of 2 new master cylinder reservoir grommets.

Lithium Soap Base Glycol Grease

(b) Install the 2 master cylinder reservoir grommets to the brake master cylinder body.

2. INSTALL BRAKE MASTER CYLINDER RESERVOIR SUB-ASSEMBLY

(a) Secure the brake master cylinder body in a vise.

NOTICE:

Place aluminum plates on the vise to prevent damage to the brake master cylinder body.

(b) Install the brake master cylinder reservoir sub-assembly to the brake master cylinder body.

NOTICE:

Do not drop the brake master cylinder reservoir sub-assembly.

3. INSTALL BRAKE MASTER CYLINDER RING PIN

(a) Using a 5 mm pin punch and a hammer, tap in the brake master cylinder ring pin to secure the brake master cylinder reservoir sub-assembly.

(b) Remove the brake master cylinder sub-assembly from the vise.

4. INSTALL BRAKE MASTER CYLINDER SUB-ASSEMBLY

5. INSTALL NO. 2 BRAKE TUBE WAY

(a) Install the No. 2 brake tube way to the brake master cylinder sub-assembly.

6. INSTALL BRAKE MASTER CYLINDER TO WAY TUBE

(a) Temporarily install the brake master cylinder to way tube to the brake master cylinder sub-assembly and No. 2 brake tube way.

NOTICE:

  • Tighten the 2 flare nuts by hand.
  • Do not kink or damage the brake line.
  • Do not allow any foreign matter such as dirt or dust to enter the brake line from the connecting parts.

(b) Secure the No. 2 brake tube way to the brake master cylinder sub-assembly with the 2 bolts, 2 nuts and 4 washers as shown in the illustration.

Torque:

12.5 N·m {127 kgf·cm, 9 ft·lbf}

*a

Bolt

*b

Nut

*c

Washer

(c) Secure the brake master cylinder sub-assembly with way in a vise.

NOTICE:

Place aluminum plates on the vise to prevent damage to the brake master cylinder sub-assembly and No. 2 brake tube way.

(d) Using a union nut wrench, fully tighten the brake master cylinder to way tube.

Torque:

Specified tightening torque :

19.6 N·m {200 kgf·cm, 14 ft·lbf}

HINT:

  • Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.

    Click here

  • When using a union nut wrench (fulcrum length of 20 mm (0.787 in.)) + torque wrench (fulcrum length of 162 mm (6.38 in.)):

    17.45 N*m (178 kgf*cm, 13 ft.*lbf)

*a

Torque Wrench Fulcrum Length

*b

Union Nut Wrench

(e) Remove the brake master cylinder sub-assembly with way from the vise.

(f) Remove the 2 bolts, 2 nuts and 4 washers.

    Installation
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    Brake Pedal
    ...

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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