Drum Brake System: Testing and Inspection

1. Measure the brake drum inside diameter.
Check the runout of brake drum using a dial indicator.
Standard value:
Inside diameter: 228.6 mm (9 inch)
2.0 DOHC: 225 mm (8.858 inch)
Limit:
Inside diameter: 230.6 mm (9.08 inch)
2.0 DOHC: 227 mm (8.936 inch)
Out-of-round of brake drum: 0.015 mm





2. Measure the brake shoe lining thickness.
Standard value:
Lining thickness: 4.45 mm (0.175 inch)
2.0 DOHC: 5.89 mm (0.231 inch)
Limit:
Lining thickness: 1.5 mm (0.059 inch)
2.0 DOHC: 0.8 mm (0.031 inch)





3. Inspect the brake lining and drum for proper contact.
4. Inspect the wheel cylinder outside for excessive corrosion and damage.
5. Inspect the backing plate for wear or damage.