Rear drum brakes [Toyota Camry Vista-V40]

Removal

1. Remove the inspection hole plug and check the thickness of the brake shoe linings through it.

• Minimum thickness - 1.0 mm

If the thickness of the linings is less than the minimum permissible, replace the brake pads.

2. Remove the rear wheel.

3. Remove the brake drum.

Note: If the brake drum does not come off easily, follow these steps:

• a) Insert a screwdriver into the inspection hole of the brake shield and move the automatic adjuster lever away from the adjuster.
• b) Using another screwdriver, rotate the automatic adjuster to reduce its length.

4. Remove the front brake shoe.

a) Using the special tool, disconnect the return spring.



b) Using the special tool, remove the retainer spring, spring seats and retainer.



c) Disconnect the retaining spring from the front brake shoe and remove the front brake shoe.

d) Remove the retaining spring from the rear brake shoe.

5. Remove the rear brake shoe.

a) Using the special tool, remove the retainer spring, spring seats and retainer.

b) Using pliers, remove the automatic regulator lever spring.



c) Remove the automatic regulator.

d) Using pliers, disconnect the cable from the parking brake lever and remove the rear shoe.



6. Remove the automatic regulator and parking brake levers.


a) Remove the retaining ring.

b) Remove the automatic regulator lever.

c) Remove the retaining ring.

d) Remove the parking brake lever.



7. Remove the wheel brake cylinder.

a) Using a special tool, disconnect the brake pipe. Drain the brake fluid into a container.



b) Unscrew 2 bolts and remove the wheel brake cylinder.



8. Disassemble the wheel brake cylinder.



Remove the following parts:

• cap,
• union,
• two dust covers, two pistons,
• two cuffs,
• spring.

Checking the details

1. Check the removed parts for wear, rust and damage.

2. Measure the thickness of the brake shoe linings.

• Nominal thickness - 4.0 mm
• Minimum allowable - 1.0 mm

If the lining thickness is less than the minimum or they have uneven wear, replace the brake pads.

Note: If any brake pad needs to be replaced, replace all rear brake pads.

3. Measure the inner diameter of the brake drum.

• Nominal diameter - 200.0 mm
• Maximum allowable - 201.0 mm

If the drum is worn or damaged, it can be machined to the maximum allowable internal diameter.

4. Check the tightness of the brake shoe lining to the drum.



If the contact between the working surfaces is poor, replace the brake pads.

Installation

Note: Install the parts as shown in the figure.

1. Apply consistent grease to the parts indicated by the arrows in the figure.



2. Assemble the wheel brake cylinder.

a) Install two new cuffs.

b) Install the spring and two pistons into the cylinder. Make sure the piston flanges are facing inward.

c) Install two anthers.

d) Install the nipple and cap.



3. Install the wheel brake cylinder on the brake shield and tighten the 2 bolts.

• Tightening torque - 10 Nm

4. Using the special tool, connect the brake pipe to the wheel brake cylinder.

• Tightening torque - 15 Nm

5. Apply high temperature grease to the following parts:

a) Contact surfaces of the brake shoe and brake shield.

b) Contact surfaces of the retaining plate and the brake shoe.



c) Automatic regulator bolt.



d) Contact surfaces of the automatic regulator and the brake shoe.

6. Using a feeler gauge, measure the gap between the brake shoe and the lever as shown in the figure.

• Nominal clearance - 0.35 mm

If the gap does not correspond to the nominal one, then select a washer of the required thickness (see table below).



7. If necessary, replace the adjusting washer.

a) Remove the parking brake lever and install the selected washer.

b) Install the parking brake lever and new retaining ring.

c) Install the automatic regulator lever and new retaining ring.

8. Install the automatic regulator and rear shoe.

a) Using pliers, connect the parking brake cable to the lever.

b) Install the regulator and return spring.

c) Install the automatic regulator lever spring.

d) Install the rear brake shoe with one end behind the retaining plate and the other end into the brake cylinder.



d) Using the special tool, install the holder, spring seats and holder spring.

Caution: Do not allow oil or grease to come into contact with the friction surfaces.

9. Install the front brake shoe.

a) Install the retaining spring between the rear and front brake shoes.



b) Install the front brake shoe with one end behind the retaining plate and the other end into the brake cylinder and automatic adjuster.

Caution: Do not allow oil or grease to come into contact with the friction surfaces.

c) Using the special tool, install the spring retainer, spring seats and retainer spring.

d) Using a special tool, connect the return spring.

10. Check the operation of the automatic clearance adjustment mechanism between the pads and the drum.

a) Move the parking brake lever up and down. Make sure that the automatic regulator works.

If the automatic regulator does not work, check that the rear brakes are assembled correctly.

b) Set the minimum possible length of the automatic regulator.

c) Install the brake drum.

d) Tighten the parking brake lever until you hear the ratchet mechanism click into place.

11. Checking the gap between the brake shoe linings and the drum.

a) Remove the brake drum.

b) Measure the inner diameter of the drum and the diameter formed by the brake shoe linings. Check that the difference obtained corresponds to the nominal value.

• Nominal clearance - 0.6 mm

If the gap does not correspond to the nominal value, check the parking brake system.

12. Install the brake drum.

13. Install the rear wheel.

• Tightening torque - 105 Nm

14. Fill the reservoir with brake fluid and bleed the brake system.

15. Check for leaks.