1. Remove the brake drum and check for fluid leaks from the wheel cylinder.
If fluid leaks are found in the wheel cylinder, check the wheel cylinder and perform replacement.
2. Inspect the brake shoes for damage or deformation and check the brake linings for wear.
NOTE:
• Always replace the wheel leading and trailing brake shoes for the left and right wheels at the same time.
• When replacing either the left or the right brake assembly, always replace the leading shoe and the trailing shoe of one side.
Thickness of lining (except for back metal):
Standard: 4.5 mm (0.177 in)
Service limit: 1.5 mm (0.059 in)
|
(A) |
Direction of drum rotation (Forward) |
|
(B) |
Leading shoe |
|
(C) |
Trailing shoe |
3. Check the brake drum for wear, dents or other damage.
If the inside surface of brake drum is streaked, correct the surface with emery cloth (#200 or more). If it is unevenly worn or tapered, or the outer surface of the brake drum is damaged, correct or replace it.
Brake drum inside diameter:
Standard: 254 mm (10.000 in)
Service limit: 256 mm (10.08 in)
If the deformation or wear of back plate, shoe, etc. is noticeable, replace problem parts.
|
(A) |
Inside diameter |
2. PARKING BRAKE (REAR DISC BRAKE)
1. Measure the inner diameter of the brake disc rotor. If scoring or worn is found on the disk, replace the brake disc rotor.
Disc rotor inner diameter:
Standard
190 mm (7.48 in)
Service limit
191 mm (7.52 in)
2. Measure the thickness of the lining. If it exceeds the limit, replace the brake shoe.
Lining thickness:
Standard
2.8 mm (0.11 in)
Service limit
1.5 mm (0.059 in)
NOTE:
Always replace the primary and secondary brake shoe of right and left wheels at the same time.