Sym DD 50 Service Manual

13. STEERING/FRONT WHEEL/SUSPENSION
13-2
Maintenance Information
Specification
Item Standard value (mm) Limit (mm)
Shaft bending
─
0.2 (0.01 in)
Radial
─
2.0 (0.08 in)
Rim wobbling
Axial
─
2.0 (0.08 in)
Torque Value
Steering handle nut
4.5kgf-m
Front brake caliper bolt
3.3kgf-m
Front wheel axle
6.0kgf-m
Steering stem mounting nut
1.5kgf-m
Front shock absorber mounting nut
2.7kgf-m
Top cone race
0.25kgf-m
Special Tools
Inner bearing puller
Bearing driver
Troubleshooting
Hard To Steer
1. The steering shaft bolt is too tight.
2. The steering shaft bearing are damaged
3. The ball and the top cone of the steering
shaft are damaged.
4. Insufficient tire pressure.
The Steering Handle Is Tilted
1. Uneven arrangement of the front shock
absorbers.
2. The front fork is bent.
3. The front wheel axle is bent.
The Front Wheel Wobbling
1. The rim is bent.
2. The wheel axle nut is not tightened
improperly
3. Bend wheel rim
4. Side-worn or poor tire.
5. The bearing play of the wheel axle is too
large.
Soft Shock Absorber
1. Weak front shock absorber spring
Noise In Front Shock Absorber
1. Shock absorber outer tube noise
2. The joint of the shock absorber gets loose.
This chapter Contents

Sym DD 50 Specifications

General

Brand	Sym
Model	DD 50
Category	Scooter
Language	English