Couplemate Trailer Parts.
Couplemate Trailer Parts.

9 inch Mechanical Backing Plate – Left

Part No: 321101 Categories: ,
Part No: 321101 Categories: ,

$49.75

Frequently Bought Together

9 inch Mechanical Backing Plate - Right

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9-inch Mechanical Brake Plate – Left Side

A 9-inch left-hand mechanical brake plate is activated at the brake lever, causing two identical shoes to apply braking force into a cast-iron brake drum.

Brake shoes and discs are known as friction brakes. Vehicle brakes are also friction brakes; however, these braking systems may be hydraulic or electric.

Installation of the Brake Shoes

However, please pay attention to the shoe offset below when installing it into a drum.

Locate the handbrake on the bottom of the axle.

13-inch to 14-inch wheels 1450kg. 15-inch to 16-inch wheels is 1200kg

Brake Shoes

9-inch x 45mm. Maximum cable tension during braking is 165kg. Hole spacings are 76.15mm P.C.D.

Replacing the backing plate is occasionally better, as other components may show wear. A four-hole post mount fixes mechanical braking plates welded to the axle behind the rear grease seal.

Removing a few bolts and replacing the whole backing plate, which is relatively inexpensive, makes the job more manageable.

How to replace 9 inch Brake Shoes

  • Take off the wheel, remove the grease cap and split pin and take off the drum.
  • Remove the worn brake shoes.
  • Keep the springs in a container ready for re-insertion.
  • Check that grease is on the backing plate under the lever assembly (at the bottom); use molybdenum grease as required.
  • Assemble the new backing plate shoes with the springs between the brake shoes, as shown in the image above.
  • The longer spring must be assembled in the lower position, and the shorter spring in the top position. Note that left-hand side brakes are a mirror image of right-hand side brakes.

Fit the drum over the brake shoes and reassemble.

Why do my trailer brakes fade?

  • Dirt, oil or grease on the brake shoes – clean
  • Worn brake shoes – replace
  • Badly adjust brake shoes – adjust
  • The trailer is overloaded, causing the brakes to overheat. Reduce trailer weight or upgrade trailer.

Mechanical Braked Axles

Find more 9-inch hydraulic parts here.

Additional information

Weight3 kg
Dimensions30 × 30 × 10 cm

Our Service Lifetime Warranty

Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.

Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.

Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.

60-Day Returns

After 60 years of experience, we know that life has its unpredictable moments.

All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.

You can view our full policy for change-of-mind returns here.

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