2. Check the thickness of the lining on the brake pads:
Drum brake.
1 - Bleeding fitting,
2 - Holder,
3 -; 7 - Upper and lower brake pads,
4 - Retaining spring,
5 - Return spring,
6 - cap,
8 - Brake shield,
9 - Spring seat,
10 - duster,
11 - Wheel cylinder,
12 - Adjusting bolt,
13 - Adjusting nut,
14 - Dust seal,
15 - Saddle,
16 - Wheel cylinder piston assembly,
17 - Regulator lock lever,
18, 19 - Retainer,
20 - Brake pipe,
21 - Piston.
Drum brake.
1 - Brake shield,
2 - Brake shoe,
3 - Retaining spring,
4 - Return spring,
5 - Brake drum,
6 - cap,
7 - Holder,
8 - Regulator lock lever,
9 - Working brake cylinder,
10 - duster,
11 - Piston,
12 - Bleeding fitting,
13 - Adjusting nut,
14 - Adjusting bolt.
Minimum allowable:
- DYNA 100 - 1.0 mm
- DYNA 150 (without automatic gap adjuster) - 1.5 mm
- DYNA 150 (with automatic gap adjuster) - 1.5 mm
Minimum allowable:
- DYNA 100 - 6.0 mm
- DYNA 150 (without automatic gap adjuster) - 6.5 mm
- DYNA 150 (with automatic gap adjuster) - 6.5 mm
If the thickness of the lining on the block is less than the minimum, or shows signs of uneven wear, replace the brake shoes.
Note: If you need to replace any of the brake pads, replace all front brake pads to maintain even braking.
3. Check the inner diameter of the brake drum.
Max inside diameter:
- DYNA 100 - 256 mm
- DYNA 150 (without automatic gap adjuster) - 292 mm
- DYNA 150 (with automatic gap adjuster) - 262 mm
Normal Inner Diameter:
- DYNA 100 - 254 mm
- DYNA 150 (without automatic gap adjuster) - 290 mm
- DYNA 150 (with automatic gap adjuster) - 260 mm
If the drum is scored or worn, you can turn the brake drum on a lathe.
4. If the contact between the brake linings and the drum is not correct, repair the lining using a shoe lapping tool, or replace the brake shoe assembly.