Toyota Tundra Service Manual: Parking Brake System

Adjustment

ADJUSTMENT

PROCEDURE

1. REMOVE REAR WHEEL

2. ADJUST PARKING BRAKE SHOE CLEARANCE

(a) Temporarily install the hub nuts.

(b) Remove the hole plug.

(c) Insert a screwdriver into the adjustment hole of the disc. Rotate the adjustment wheel in the "X" direction until the shoes are locked. Then rotate the adjustment wheel in the "Y" direction 8 notches.

(d) Check that the disc can be rotated smoothly. If not, rotate the adjustment wheel in the "Y" direction and check again.

(e) Install the hole plug.

(f) Remove the hub nuts.

3. INSTALL REAR WHEEL

Torque:

for aluminum wheel :

131 N·m {1336 kgf·cm, 97 ft·lbf}

for steel wheel :

209 N·m {2131 kgf·cm, 154 ft·lbf}

4. CHECK PARKING BRAKE PEDAL TRAVEL

(a) Firmly depress the parking brake pedal.

(b) Release the parking brake.

(c) Slowly depress the parking brake pedal with a force of approximately 300 N (31 kgf, 67.4 lbf) and count the number of clicks.

Standard:

6 to 9 clicks

5. ADJUST PARKING BRAKE PEDAL TRAVEL

(a) Depress the parking brake pedal.

(b) Apply load equivalent to 4 kN (408 kgf, 899.2 lbf) on equalizer twice to pull No. 2 and No. 3 parking brake cable to remove initial elongation.

(c) Release the parking brake pedal to the original position.

(d) Loosen the pedal side No. 1 parking brake cable lock nut.

(e) Turn the pedal side No. 1 parking brake cable adjustment nut until the parking brake pedal travel is correct.

Standard parking brake pedal travel:

Pedal Load

Specified Condition

300 N (31 kgf, 67.4 lbf)

6 to 9 clicks

(f) Using a wrench or equivalent to hold the adjustment nut, tighten the lock nut.

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

NOTICE:

Pay attention that the adjustment nut does not rotate with the lock nut during tightening.

(g) Additionally, excessive pedal travel can be adjusted on the No. 1 parking brake cable underbody side as follows.

(1) Release the parking brake pedal to the original position.

(2) Loosen the underbody side No. 1 parking brake cable lock nut.

(3) Turn the underbody side No. 1 parking brake cable adjustment nut until the parking brake pedal travel is correct.

Standard parking brake pedal travel:

Pedal Load

Specified Condition

300 N (31 kgf, 67.4 lbf)

6 to 9 clicks

(4) Tighten the No. 1 parking brake cable underbody lock nut.

Torque:

13 N·m {128 kgf·cm, 9 ft·lbf}

NOTICE:

Pay attention that the adjustment nut does not rotate with the lock nut during tightening.

(h) Depress and release the parking brake pedal 3 or 4 times. Then check the number of clicks when depressing the pedal.

Standard:

6 to 9 clicks

If the result is not as specified, adjust the parking brake pedal travel again.

(i) Check whether the parking brake drags or not.

If the parking brake drags, adjust the shoe clearance.

(j) When operating the parking brake pedal, check that the parking brake pedal indicator light comes on at the first notch.

If not, adjust the parking brake switch installation position.

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Parking brake system

Symptom

Suspected Area

See page

Parking brake drags

Parking brake pedal travel (adjustment necessary)

Parking brake wire (sticking)

Parking brake shoe clearance (adjustment necessary)

Parking brake shoe (cracked or damaged)

Tension or return spring (damaged)

    Parking Brake Switch

    Engine, Hybrid System

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