5.4 Rear Drum Brake
•5.4.1 Removal
* Attention
• Replace braking shoe.
• If a braking shoe assembly will be used again,
please mark it on the side before removal so that is
can be re-installed easily to its original place.
Remove the following rear brake assembly from the
rear wheel:
1. Bolt M6Χ35（6）
2. Rear brake rocker arm（8）
3. Nut M6（9）
4. Rear wheel shaft locknut (1)
5. Rear brake return spring
6. Rear brake cam shaft（12） 7. Braking shoe
assembly（16） 8. Braking shoe spring（15）
9. Tyre 3.00-18（17） 10. Rear wheel rim（18）
Note: Detailed exploded view refers to P86.
5.4.2 Inspection
Check if braking shoe assembly and brake drum are worn. Replace them if necessary.
Measure braking shoe thickness and brake drum ID and record the maximum values.
* Attention
• Micrometer shall be used for the measurement.
Measure the thickness of braking shoe and the inner diameter of brake drum.
If the braking shoes are contaminated by oil or their thickness is smaller than service limit, replace them.
Note: Braking shoes shall be replaced in pairs.
Rear brake drum ID φ130mm
Thickness of rear brake shoe 4mm
Service limit: Braking shoe 3mm
Rear brake drum ID 131mm
5.4.3 Installation
Install braking shoe assembly
Install rear wheel.
Install muffler assembly (24).
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