Sunday, June 24, 2012

Toyota Tundra: Parts diagram to replace Brake Drums?

How to replace brake drums on Toyota Tundra.
2002 Toyota Tundra Brake drums replacement procedure.
Before replacing drum brakes Follow drum brake testing procedure.

Here is a complete exploded diagram of the rear drum system:

rear drum brake parts





To remove the rear drums, you may need to adjust the auto brake adjuster back down.
The procedure to do that is as follows:----

brake adjust


(a) Remove the adjusting hole plug from the backing plate.
(b) Insert a screwdriver through the hole in the backing plate, and hold the automatic adjusting lever away from the adjusting bolt.
(c) Using another screwdriver, reduce the brake shoe adjustment by turning the adjusting bolt.

When adjusted down, you may need to tap on the drum between the lugs to break the drum free from the hub (rust will hold it to the hub.)

Please also refer this more details for  complete procedure step by step:-----

You will need pliers to remove the springs, and a brake shoe retaining spring compressor to remove the shoes.

1.REMOVE REAR WHEEL
2.REMOVE BRAKE DRUM
3.REMOVE REAR SHOE

replacing brake drum

(a) Using SST (or equivilant), disconnect the return spring from the rear shoe.
(b) Remove the return spring from the front shoe.

brake drum replace

(c) Using SST (or eqivalant), remove the shoe hold-down spring, 2 cups and pin.
(d) Disconnect the anchor spring from the rear shoe and remove the rear shoe.
(e) Remove the anchor spring from the front shoe.

anchor spring from brake shoe

5. REMOVE FRONT SHOE

(a) Using SST the shoe hold-down spring, 2 cups and pin.
(b) Disconnect the parking brake cable No. 1 from the parking brake bellcrank.
(c) Remove the front shoe with adjuster.
(d) Disconnect the parking brake cable No. 1 from the front shoe.

6. REMOVE ADJUSTER FROM FRONT SHOE

(a) Remove the adjusting lever spring.
(b) Remove the adjuster.

adjuster spring

7. REMOVE AUTOMATIC ADJUSTING LEVER AND PARKING BRAKE LEVER
(a) Remove the E-ring.
(b) Remove the automatic adjusting lever.
(c) Remove the C-washer.
(d) Remove the parking brake lever.

INSTALLATION
Installation is in the reverse order of removal.

NOTICE: Apply lithium soap base glycol grease and high temperature grease to the parts indicated by the arrows.

nut bolt adjusting
1. ADJUST BELLCRANK

(a) Lightly pull the bellcrank in direction A until there is no slack at part B.
(b) In this condition, turn the adjusting bolt so that dimension C will be 0.4 - 0.8 mm (0.016 - 0.031 inch).
(c) Lock the adjusting bolt with the lock nut.
(d) Connect the parking brake cable to the parking brake bellcrank and install the pin and clip.
(e) Install the 2 tension springs.

2. CHECK OPERATION OF AUTOMATIC ADJUSTING MECHANISM

brake mechanism
(a) Move the parking brake lever of the front shoe back and forth. Check that the adjuster turns.
If the adjuster does not turn, check for incorrect installation of the rear brakes.
(b) Adjust the adjuster length as short as possible.
(c) Install the brake drum.
(d) Pull the parking brake lever all the way up or depress the parking brake pedal all the way until a clicking sound can no longer be heard.

drum brake shoes
3. CHECK CLEARANCE BETWEEN BRAKE SHOES AND DRUM

(a) Remove the drum.
(b) Measure the brake drum inside diameter and diameter of the brake shoes. Check that the difference between the diameters is the correct shoe clearance.
Shoe clearance: 0.5 mm (0.020 inch)
If it is incorrect, check the parking brake system.

Reinstall the drum, and install wheel.

IMPORTANT NOTE:---Its recommend changing one side at a time.This will help you to look at the other side about where the parts goes.

This details will help.
Thanks.


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