9 inch Mechanical Brake Shoes suit mechanical backing plates.
This pair fits front and back of backing plate. 9-inch x 45mm. One pair suits one drum. Fits all 9-inch mechanical drums except early model including Wesco.
Care must be taken when inserting these brake shoes. There are many ways they can be installed but only one right way.
Installed the wrong way, these shoes will create a lot of heat and bearing wear.
Bearing wear can is caused by worn casting on the rollers resulting in carbon black in your grease. If your grease is black then replace your bearings immediately.
If you have replaced your bearing with Japanese bearings and you still have hot brakes then look closely at your brake shoes.
Look at the image on the bottom of the page and the image of this product. See how different the images would look if only one shoe were turned upside down? Yes, the bonded material on the shoe itself is not concentrically located on the shoe.
When installing mechanical backing plates, ensure the park brake is located at the bottom or in the 6 o’clock position.
Occasionally, it is better to replace the whole backing plate as other components may be showing wear.
The job becomes easier removing a few bolts then replacing the whole backing plate.
Furthermore, replacing the entire backing plates are relatively inexpensive and may fix problems not readily apparent.
9 inch Brake Shoe Replacement
- 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 there is grease on the backing plate under the lever assembly (at the bottom), use molybdenum grease as required.
- Assemble the new shoes to the backing plate with the springs between the shoes as shown on the image below.
- The longer spring must be assembled in the lower position, the shorter spring in the top position. Note that left-hand side brakes are a mirror image to right-hand side brakes.
- Finally, fit the drum over the brake shoes and reassemble. The assembly order is shown below.