There should be no burrs or deep scratches on the working surface of the drum. Otherwise, replace the drum or machine its working surface.
After turning, sand the surface with fine-grained abrasive bars; after processing, the drum diameter should not exceed 201 mm.
Replace the drum if cracks are found.
You will need: a 7 mm wrench, two mounting blades, a hammer, and a wooden spacer.
1. Engage 1st gear and place chocks under the front wheels.
2. Make sure the parking brake lever is fully depressed (the car is released).
3. Remove the rear wheel and clean the brake drum from dirt.
4. Using a 7 mm spanner, unscrew the two mounting pins.
5. Apply a liquid such as WD-40 to the hub and, after waiting a few minutes, clean off any dirt or rust from the area.
6. Using a hammer and a wooden spacer, loosen the drum from the hub.
7. Remove the drum from the hub. If this fails, knock it down with a hammer, striking it through a wooden spacer on the flange on the back side of the drum...
8. ...or press by evenly driving pins or suitable bolts into the two threaded holes of the drum.
9. When installing the old drum, use a file to remove the ridge on its working surface that has formed as a result of wear.
10. Install the drum in the reverse order of removal. First, lubricate the hub seat belt with graphite grease or LSC-15 grease and bring the pads together using two mounting blades.
11. Check the ease of rotation of the wheel. Slight contact of the drum with the pads is permitted. With the vehicle on the ground, press the brake pedal two or three times to bring the shoes to the drum.