Lexus NX: Installation

INSTALLATION

CAUTION / NOTICE / HINT

NOTICE:

When the brake pedal is first depressed after replacing the brake pads or pushing back the disc brake piston, DTC C1214 may be output. As there is no malfunction, clear the DTCs.

PROCEDURE

1. INSTALL FRONT DISC

(a) Align the matchmarks and install the front disc. HINT: When replacing the disc with a new one, select the installation position where the front disc has smallest runout.

*a Matchmark

2. INSTALL FRONT DISC BRAKE CYLINDER MOUNTING LH

(a) Install the front disc brake cylinder mounting LH with the 2 bolts.

Torque:

106.8 N·m {1089 kgf·cm, 79 ft·lbf}

3. INSTALL FRONT DISC BRAKE BUSH DUST BOOT

(a) Apply a light coat of lithium soap base glycol grease to the entire circumference of 2 new front disc brake bush dust boots, and the entire inner circumference of both ends.

Lithium soap base glycol grease

HINT:

Apply at least 0.3 g (0.01 oz.) of lithium soap base glycol grease to the front disc brake bush dust boot.

(b) Install the 2 front disc brake bush dust boots to the front disc brake cylinder mounting LH.

4. INSTALL FRONT DISC BRAKE CYLINDER SLIDE PIN

(a) Apply a light coat of lithium soap base glycol grease to the sliding part and the seal surface of the front disc brake cylinder slide pin.

Lithium soap base glycol grease

(b) Install the front disc brake cylinder slide pin to the front disc brake cylinder mounting LH.

(c) Push the front disc brake cylinder slide pin into the front disc brake bush dust boot to align them.

5. INSTALL FRONT DISC BRAKE CYLINDER SLIDE BUSH

(a) Apply a light coat of lithium soap base glycol grease to the contact surface of the No. 2 disc brake cylinder slide pin where it contacts the front disc brake cylinder slide bush.

Lithium soap base glycol grease

(b) Install a new front disc brake cylinder slide bush to the No. 2 disc brake cylinder slide pin.

6. INSTALL NO. 2 DISC BRAKE CYLINDER SLIDE PIN

(a) Apply a light coat of lithium soap base glycol grease to the sliding part and the seal surface of the No. 2 disc brake cylinder slide pin.

Lithium soap base glycol grease

(b) Install the No. 2 disc brake cylinder slide pin to the front disc brake cylinder mounting LH.

(c) Push the No. 2 disc brake cylinder slide pin into the front disc brake bush dust boot to align them.

7. INSTALL FRONT NO. 1 DISC BRAKE PAD SUPPORT PLATE

(a) Install the 4 front disc brake pad support plates to the front disc brake cylinder mounting LH as shown in the illustration. NOTICE: The shapes of the front disc brake pad support plates differ. Therefore, when replacing a front disc brake pad support plate with a new plate, make sure to check the part number and shape for the installation position prior to installation. When reusing a front disc brake pad support plate, make sure to check the installation position using the matchmark placed during removal prior to installation.

*1 Front No. 1 Disc Brake Pad Support Plate *2 Front No. 2 Disc Brake Pad Support Plate *3 Front No. 3 Disc Brake Pad Support Plate *4 Front No. 4 Disc Brake Pad Support Plate

8. INSTALL FRONT NO. 2 DISC BRAKE PAD SUPPORT PLATE

9. INSTALL FRONT NO. 3 DISC BRAKE PAD SUPPORT PLATE

10. INSTALL FRONT NO. 4 DISC BRAKE PAD SUPPORT PLATE

11. INSTALL NO. 1 PAD WEAR INDICATOR PLATE

(a) Install the 2 new No. 1 pad wear indicator plates to the 2 front disc brake pads. NOTICE: Install the pad wear indicator plates in the correct positions and directions.

12. INSTALL FRONT ANTI-SQUEAL SHIM KIT

(a) Apply disc brake grease to the inside of the 2 No. 1 anti-squeal shims as shown in the illustration.

Area for disc brake grease application

(b) Install the 2 No. 1 anti-squeal shims to the pads.

13. INSTALL FRONT DISC BRAKE PAD

(a) Install the 2 front disc brake pads with the 2 No. 1 anti-squeal shims to the front disc brake cylinder mounting LH.

(b) Install the 2 anti-squeal springs to the front disc brake pads. NOTICE: When replacing the front disc brake pads with new ones, make sure to replace the anti-squeal springs at the same time. Be sure to install the anti-squeal springs into the front disc brake pad installation holes as far as they will go.

14. INSTALL DISC BRAKE CYLINDER ASSEMBLY LH

(a) Hold the front disc brake cylinder slide pin and install the disc brake cylinder assembly LH to the disc brake cylinder mounting LH with 2 bolts. Torque: 34.3 N·m {350 kgf·cm, 25 ft·lbf} NOTICE: Install the disc brake cylinder assembly LH while holding both of the front disc brake pads because the anti-squeal springs may fall off the front disc brake pads. Be sure that the anti-squeal springs are installed to the front disc brake pads.

*a Hold *b Turn

15. CONNECT FRONT FLEXIBLE HOSE

(a) Connect the front flexible hose to the disc brake cylinder assembly LH with a new gasket and a new union bolt.

Torque:

30.4 N·m {310 kgf·cm, 22 ft·lbf}

NOTICE:

Install the front flexible hose lock securely in the lock hole in the disc brake cylinder assembly LH.

16. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

(a) Connect the cable to the negative (-) auxiliary battery terminal and tighten the nut.

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

(b) Perform the following procedure if air bleeding is not necessary.

(1) Connect the reservoir level switch connector.

(2) Clear the DTCs.

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17. 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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18. INSTALL DECK FLOOR BOX LH

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19. INSTALL REAR DECK FLOOR BOX

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20. INSTALL NO. 3 DECK BOARD SUB-ASSEMBLY

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21. BLEED BRAKE LINE

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22. INSTALL FRONT WHEEL

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