Lexus NX: Installation

INSTALLATION

PROCEDURE

1. INSTALL BRAKE BOOSTER GASKET

(a) Install a new brake booster gasket to the brake booster with master cylinder assembly.

2. INSTALL BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY

(a) Install the brake booster with master cylinder assembly with the 4 nuts. Torque: 12.7 N·m {130 kgf·cm, 9 ft·lbf} NOTICE: Do not kink or damage the brake tubes. Do not carry the brake booster with master cylinder assembly by the portion shown in the illustration. Be careful not to allow brake fluid to enter the connector of ECU. If installing a new brake booster with master cylinder assembly, do not remove the hole plugs before connecting the brake lines because the brake booster with master cylinder is filled with brake fluid.

*a Connector Portion *b Union *c Push Rod Clevis *d Boot *e Front No. 2 Brake Tube

(b) Using a union nut wrench, tighten each brake line. Torque: Specified tightening torque : 15.2 N·m {155 kgf·cm, 11 ft·lbf} NOTICE: Do not kink or damage the brake tubes. HINT: Calculate the torque wrench reading when changing the fulcrum length of the torque wrench. Click here When using union nut wrench (fulcrum length of 22 mm (0.8661 in.)) + torque wrench (fulcrum length of 162 mm(6.3779 in.)): 13.4 N*m (137 kgf*cm,10 ft.*lbf)

*a Torque Wrench Fulcrum Length

(c) Install the No. 2 brake tube clamp bracket to the brake booster with master cylinder assembly with the 2 bolts. Torque: 5.0 N·m {51 kgf·cm, 44 in·lbf} NOTICE: Securely install the No. 2 brake tube clamp bracket so that its stopper contacts the brake booster with master cylinder assembly as shown in the illustration.

*a Stopper

(d) Connect the connector to the brake booster with master cylinder assembly.

	Connect the connector
	Lock the lock lever

3. INSTALL RESERVOIR BRACKET

(a) Install the reservoir bracket with the 2 bolts.

Torque:

8.5 N·m {87 kgf·cm, 75 in·lbf}

4. CONNECT BRAKE ACTUATOR HOSE

(a) Connect the brake actuator hose to the brake booster pump assembly, and slide the clamp to secure it.

Vehicle Interior

5. CONNECT NO. 1 RESERVOIR HOSE

(a) Connect the No. 1 reservoir hose to the brake booster with master cylinder assembly, and slide the clip to secure it.

Up

6. CONNECT NO. 2 RESERVOIR HOSE

(a) Connect the No. 2 reservoir hose to the brake booster with master cylinder assembly, and slide the clip to secure it.

Up

7. INSTALL BRAKE MASTER CYLINDER RESERVOIR ASSEMBLY

(a) Install the brake master cylinder reservoir with bracket with the 3 bolts.

Torque:

8.5 N·m {87 kgf·cm, 75 in·lbf}

8. INSTALL PUSH ROD PIN

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9. INSTALL AIR CLEANER CASE SUB-ASSEMBLY

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10. FILL RESERVOIR WITH BRAKE FLUID

11. INSTALL COWL BODY MOUNTING REINFORCEMENT LH

(a) Install the cowl body mounting reinforcement LH with the 3 nuts. Torque: Nut A : 50 N·m {510 kgf·cm, 37 ft·lbf} Nut B : 8.5 N·m {87 kgf·cm, 75 in·lbf}

12. INSTALL OUTER COWL TOP PANEL

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13. INSTALL SUSPENSION TOWER DAMPER

14. INSTALL WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY

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15. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

(a) Connect the reservoir level switch connector.

(b) Connect the negative (-) auxiliary battery terminal and tighten the nut.

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

16. INITIALIZATION AFTER RECONECTING AUXILIARY BATTERY TERMINAL

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HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

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17. BLEED BRAKE SYSTEM

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18. INSPECT AND ADJUST BRAKE PEDAL

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19. OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR

HINT:

After the brake booster with master cylinder assembly is replaced, obtain the zero point of the yaw rate and acceleration sensor.

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20. INSTALL NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY

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