Inspect Brake Booster

a. OPERATING CHECK

1. Depress the brake pedal several times with the engine off and check that there is no change in

2007 BRAKES Brake - Sequoia the pedal reserve distance.

2. Depress the brake pedal and start the engine. If the pedal goes down slightly, operation is normal.

Auto Repair Sst

Fig. 13: Inspecting Brake Booster

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 13: Inspecting Brake Booster

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. AIR TIGHTNESS CHECK

1. Start the engine and stop it after 1 or 2 minutes. Depress the brake pedal several times slowly.

If the pedal goes down farthest the 1st time, but gradually rises after the 2nd or 3rd time, the booster is airtight.

2. Depress the brake pedal while the engine is running, and stop the engine with the pedal depressed. If there is no change in the pedal reserve travel after holding the pedal for 30 seconds, the booster is airtight.

2007 BRAKES Brake - Sequoia

GOOD NO GOOD

Toyota Sequoia Brake Booster Vacuum Hose

Fig. 14: Checking Air Tightness

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 14: Checking Air Tightness

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

REMOVAL

1. REMOVE BRAKE MASTER CYLINDER (See REMOVAL )

2. DISCONNECT VACUUM HOSE

3. DISCONNECT VACUUM SWITCH CONNECTORS

4. REMOVE FRONT DOOR SCUFF PLATE LH (See REMOVAL )

5. REMOVE COWL SIDE TRIM BOARD LH (See REMOVAL )

6. REMOVE INSTRUMENT SIDE PANEL LH (See )

7. REMOVE INSTRUMENT PANEL FINISH PANEL LOWER LH

8. REMOVE NO.2 HEATER TO REGISTER DUCT

9. REMOVE BRAKE PEDAL RETURN SPRING

10. REMOVE CLIP AND CLEVIS PIN

11. REMOVE BRAKE BOOSTER

a. Remove the 4 nuts, pull out the brake booster.

b. Remove the gasket from the brake booster bracket.

2007 BRAKES Brake - Sequoia c. Loosen the lock nut then remove the clevis. Torque: 25 N*m (250 kgf*cm, 18 ft.*lbf)

d. Remove the check valve.

e. Remove the 4 nuts, brake booster bracket and gasket from the brake booster. Torque: 25 N*m (250 kgf*cm, 18 ft.*lbf)

Fig. 15: Removing Brake Booster

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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