Recommended replacement interval for the part category Brake disc : 50000 km

Important!

This replacement procedure can be used for:
TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_) 4.7 4WD (UZN215), TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_) 4.0 (GRN210) … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

All the parts you need to replace – Brake Discs for 4 RUNNER (UZN21_, KZN21_, GRN21_) and other TOYOTA models

Brake disc

Brake disc for 4Runner Off-Road (N210) Petrol (264 hp)

Simple DIY car repair steps – Replacing Brake disc on 4Runner Off-Road (N210)

Brake disc for 4Runner Off-Road (N210) Petrol (237 hp)

Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). List of the tools you'll need:

                        Wire brush
                      
                        WD-40 spray
                      
                        Brake cleaner 
                      
                        Copper grease 
                      
                        Drive socket # 12 
                      
                        Drive socket # 17 
                      
                        Wheel impact socket #21
                      
                        Ratchet wrench
                      
                        Torque wrench
                      
                        Flat Screwdriver
                      
                        Pin punch
                      
                        Tap wrench
                      
                        Rubber mallet
                      
                        Crow bar
                      
                        Wheel chock

Buy tools

Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). AUTODOC experts recommend:

Replace the brake disks on the car TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_) in complete set for each axis. Regardless of the state of components. This will ensure even braking.
The replacement procedure is identical for both brake disks on the same axle.
When changing the brake discs, always replace the brake pads.
All work should be done with the engine stopped.

Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). Use the following procedure:

Step 1

Open the bonnet. Unscrew the brake fluid reservoir cap.

Step 2

Secure the wheels with chocks.
Step 3

Loosen the wheel mounting bolts. Use wheel impact socket #21.
Step 4

Raise the front of the car and secure on supports.

Step 5

Unscrew the wheel bolts.

AUTODOC recommends:
Important! Hold the wheel while unscrewing the fastening bolts. TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_)
Step 6

Remove the wheel.
Step 7

Clean the brake pads fasteners. Use a wire brush. Use a brake cleaner.

Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). Tip:
After applying the spray, wait a few minutes.
Step 8

Remove the brake pads retaining clips. Use a crowbar. Use a flat screwdriver.
Step 9

Remove the retainer of the brake pads. Use a pin punch. Use a rubber mallet.
Step 10

Remove the retaining spring of the brake pads.
Step 11

Spread the brake pads. Use a crowbar.
Step 12

Remove the brake pads.
Step 13

Clean the brake hose bracket fasteners. Use a wire brush. Use WD-40 spray.
Step 14

Disconnect the brake hose mounting bracket. Use a drive socket #12. Use a ratchet wrench.
Step 15

Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.
Step 16

Unscrew the brake caliper fastening. Use a drive socket #17. Use a tap wrench.
Step 17

Remove the brake caliper.

AUTODOC recommends:
Tie the caliper to the suspension or to the body with a wire without disconnecting from the brake hose to prevent depressurization of the brake system.Make sure that the brake caliper is not hanging on the brake hose.Don't press the brake pedal after the brake caliper has been removed. As a result, the piston can fall out from the brake cylinder, and brake fluid leakage and depressurization of the system may occur.
Step 18

Clean the brake disk surface. Use WD-40 spray.
Step 19

Remove the brake disc. Use a rubber mallet.
Step 20

Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
Step 21

Install the brake disc.
Step 22

Treat the brake caliper piston. Use a brake cleaner.

AUTODOC recommends:
Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). After applying the spray, wait a few minutes.
Step 23

Install the brake caliper and fix it. Use a drive socket #17. Use a torque wrench. Tighten it to 123 Nm torque.
Step 24

Secure the brake hose fastening bracket. Use a drive socket #12. Use a ratchet wrench.
Step 25

Install the brake pads.
Step 26

Install the retainer of the brake pads. Use a crowbar. Use a rubber mallet.
Step 27

Install the retaining spring of the brake pads.
Step 28

Install the brake pads retaining clips.
Step 29

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 30

Clean the brake disk surface. Use a brake cleaner.

Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). Tip from AUTODOC:
After applying the spray, wait a few minutes.
Step 31

Install the wheel.

Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). Tip from AUTODOC experts:
To avoid injury, hold up the wheel when screwing in the fastening bolts.
Step 32

Screw in the wheel bolts. Use wheel impact socket #21.
Step 33

Lower the car and working in a cross order, tighten the wheel bolts. Use a torque wrench. Tighten it to 112 Nm torque.
Step 34

Remove the jacks and chocks.

AUTODOC recommends:
Important! Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). Check the brake fluid level in the reservoir and top up if necessary.
Step 35

Tighten the brake fluid reservoir cap.

Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). Tip:
Without starting the engine, press the brake pedal several times until you feel significant resistance.
Step 36

Close the hood.

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