Hyundai Elantra HD: Rear Drum Brake. Repair procedures
Removal
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1. |
Release the parking brake.
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2. |
Remove the rear tire and wheel.
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3. |
Remove the rear brake drum (A).
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4. |
Remove the shoe hold spring and shoe hold pin (B).
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5. |
Remove the upper return spring (A).
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6. |
Lower the brake shoe assembly (A), and remove the lower return
spring (B). Make sure not to damage the dust cover on the wheel cylinder.
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7. |
Remove the parking brake cable (A) from the brake assembly.
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8. |
Remove the brake shoe assembly.
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9. |
Disconnect brake tubes (A) from the wheel cylinder (B).
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10. |
Remove the bolt (C) and the wheel cylinder (B) from the backing
plate (D).
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Installation
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1. |
Apply sealant (C) between the wheel cylinder (A) and backing plate
(B), and install the wheel cylinder.
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2. |
Connect the brake tubes (D) to the wheel cylinder.
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3. |
Connect the parking brake cable (A) to the brake assembly.
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4. |
Clean the threaded portions of adjuster sleeve (A) and push rod
female (B). Coat the threads of the adjuster assembly with grease. To
shorten the clevises, turn the adjuster bolt (C).
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5. |
Hook the shoe adjuster lever (A), then install it to the brake
shoe.
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6. |
Install the adjuster assembly (B) and upper return spring (C)
as right direction. Be careful not to damage the wheel cylinder dust
covers.
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7. |
Install the lower return spring (D).
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8. |
Apply brake cylinder grease or equivalent rubber grease to the
sliding surfaces shown. Don't get grease on the brake linings.
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9. |
Apply brake cylinder grease or equivalent rubber grease to the
brake shoe ends and opposite edges of the shoes shown. Don't get grease
on the brake linings.
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10. |
Install the brake shoes (A) onto the backing plate. Be careful
not to damage the wheel cylinder dust covers.
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11. |
Install the shoe hole down pins (B) and the shoe hole down springs.
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12. |
Install the rear brake drum (A).
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13. |
If the wheel cylinder has been removed, bleed the brake system.
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14. |
Depress the brake pedal several times to set the self-adjusting
brake.
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15. |
Adjust the parking brake.
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Inspection
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1. |
Raise the rear of the vehicle, and make sure it is securely supported.
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2. |
Release the parking brake, and remove the rear brake drum.
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3. |
Check the wheel cylinder (A) for leakage.
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4. |
Check the brake linings (B) for cracking, glazing, wear, and contamination.
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5. |
Measure the brake lining thickness (C).
Measurement does not include brake shoe thickness.
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6. |
If the brake lining thickness is less than the service limit,
replace the brake shoes as a set.
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7. |
Check the bearings in the hub unit for smooth operation. If it
requires servicing, replace it.
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8. |
Measure the inside diameter of the brake drum with inside vernier
calipers.
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9. |
If the inside diameter of the brake drum is more than the service
limit, replace the brake drum.
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10. |
Check the brake drum for scoring, grooves, and cracks.
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11. |
Inspect the brake lining and drum for proper contact.
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12. |
Inspect the wheel cylinder outside for excessive wear and damage.
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13. |
Inspect the backing plate for wear or damage.
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