Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VIYP
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: PARKING BRAKE: PARKING BRAKE SYSTEM: ADJUSTMENT; 2016 - 2020 MY Sienna [12/2015 -        ]

ADJUSTMENT

PROCEDURE

1. INSPECT PARKING BRAKE PEDAL TRAVEL

(a) Fully depress the parking brake pedal to engage the parking brake.

(b) Depress the pedal again to disengage the parking brake.

(c) Slowly depress the parking brake pedal using the specified force, and count the number of clicks.

Parking brake pedal travel:

3 to 6 notches at 300 N (31 kgf, 67.5 lbf)

If the parking brake pedal travel is not as specified, adjust the parking brake shoe clearance and parking brake pedal travel.

2. ADJUST PARKING BRAKE SHOE CLEARANCE AND PARKING BRAKE PEDAL TRAVEL

(a) Remove the knee airbag assembly (See page 2016 - 2020 MY Sienna [12/2015 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: KNEE AIRBAG ASSEMBLY: REMOVAL ).

(b) Completely release the parking brake pedal.

(c) Loosen the lock nut and the adjusting nut to completely release the parking brake cable.

Text in Illustration

*1

Lock Nut

*2

Adjusting Nut

(d) Remove the rear wheels.

(e) Temporarily install the hub nuts to the hub bolts.

HINT:

Securely install the hub nuts to the rear disc.

(f) Remove the parking brake shoe adjusting hole plug (See page 2016 - 2020 MY Sienna [12/2015 -        ]; BRAKE (REAR): REAR BRAKE: REMOVAL+ ).

(g) Turn the shoe adjuster and expand the shoe until the disc locks.

Text in Illustration

*a

Expand

*b

Contract

(h) Turn and contract the shoe adjuster until the disc can rotate smoothly.

Standard:

Return 8 notches.

(i) Check that there is no brake drag against the shoe.

(j) Install the parking brake shoe adjusting hole plug (See page 2016 - 2020 MY Sienna [12/2015 -        ]; BRAKE (REAR): REAR BRAKE: INSTALLATION+ ).

(k) Turn the adjusting nut until the parking brake pedal travel is corrected to be within the specified range.

Parking brake pedal travel:

3 to 6 notches at 300 N (31 kgf, 67.5 lbf)

(l) Using a wrench or an equivalent tool, hold the adjusting nut and tighten the lock nut.

Text in Illustration

*1

Lock Nut

*2

Adjusting Nut

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

(m) Operate the parking brake pedal 3 to 4 times, and check the parking brake pedal travel.

(n) Check that there is no brake drag against the shoe.

(o) Remove the hub nuts from the hub bolts.

(p) Install the rear wheels.

Torque:

103 N·m {1050 kgf·cm, 76 ft·lbf}

(q) Install the knee airbag assembly (See page 2016 - 2020 MY Sienna [12/2015 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: KNEE AIRBAG ASSEMBLY: INSTALLATION ).

3. INSPECT BRAKE WARNING LIGHT

(a) When operating the parking brake pedal, check that the brake warning light illuminates.

OK:

The brake warning light always illuminates at the first click.