23-passenger electric sightseeing vehicles, a type of shuttle bus with a personalized control system, offer flexible steering, comfortable handling, lightness, smooth operation, ease of driving, recyclable electric power, and long lifespan. These vehicles are widely used in hotels, tourist attractions, property viewing cars, factories, airports, train stations, bus stations, harbors, and parks.

When purchasing, have the seller demonstrate the actual operation according to the instructions. Observe the control of speed adjustment, hub noise, and braking performance. The wheel should rotate smoothly without any feeling of resistance. The controller's battery display should be normal, and the gear shifting should be smooth. There should be no shock upon starting, and the hub rotation sound should be soft. The exterior paint and electroplating should be bright without any peeling.

Maintenance Tips for the Brake System of a 23-Seat Tour Bus
When the handbrake is not functioning properly, adjust the bolts on the handbrake line connection points at the front and rear.
Regularly check the brake fluid reservoir's level; add fluid immediately if it's below 1/3 full. The reservoir is typically located in the upper left corner of the dashboard or inside the seat frame.
Brake softness or poor braking response requires timely adjustment of the brake clearance and exhaust of air from the brake line.
Brake drift can be adjusted by adjusting the gap between the brake shoes and brake drums within the brake unit.
Regularly inspect the brake line and its attachment points on the frame for any signs of detachment or friction; take protective measures promptly if any issues are found.
Ensure regular inspection of the brake line connection on 2-6 seater vehicles for looseness and wear; adjusting the brakes can be done directly by turning the threads on the brake pull rod connected to the brake pedal.

Common issues and maintenance for the rear axle of a 23-seater sightseeing vehicle
1. Mismatched mesh marks and tooth side gaps on spur gears, as well as excessive bearing wear on gears, can all cause abnormal noise.
2. Excessive bearing pre-tension, too small gear mesh clearance, incorrect meshing marks, and insufficient lubricant can all cause abnormal heat. These issues should be addressed promptly before the vehicle is allowed to depart.
3. Regularly inspect the tightness of all connection parts. In case of looseness, tighten immediately to prevent accidents.
4. Regularly inspect for any signs of lubricant leakage at all connection points, and address any issues promptly.
5. Regularly clean the external soil from the breather plug to keep the air holes unobstructed. Frequently check the lubricant level; it should not be excessive or insufficient.
6. The rear axle produces unusual noises during vehicle operation, primarily due to the following reasons:
Hollow shaft bearing damage, replace the bearing.
Insufficient gear oil quantity or extended gear oil usage can lead to oil quality deterioration. Add gear oil or drain and replace the original gear oil. Inject new gear oil as specified in the manual and the recommended quantity.
Damaged or leaking rear shock absorber, replace with new shock absorber.
Tianjin Yigao Electric Vehicle Technology Co., Ltd. actively upholds the belief in compassionate humanistic technology, pursuing and growing amidst the rhythm of love and unity.






























