The main reasons for the heavy steering wheel of a semi-trailer include the following:
Lack of hydraulic oil or damage to the power assist pump: Hydraulic oil is the key medium for transmitting power in the steering assist system. If the hydraulic oil is insufficient or the power assist pump is damaged, it will cause power transmission to be obstructed, making steering difficult.
Steering gear damage: The steering gear is responsible for converting the energy transmitted by hydraulic oil into mechanical energy to drive the steering mechanism. If there is internal leakage or damage to the steering gear, the energy of the hydraulic oil cannot be effectively transmitted, resulting in heavy steering.
Filter blockage: The filter element in the steering hydraulic system is responsible for filtering hydraulic oil. If the filter element is blocked, it will affect the normal flow of hydraulic oil and cause heavy steering.
Lack of oil or lubrication on the steering shaft: Lack of lubrication on the steering shaft can cause dry wear or even jamming, resulting in heavy steering.
Blockage of return oil filter in oil storage tank: Failure to maintain or replace the return oil filter for a long time can cause blockage, affecting the circulation of power assist oil and making the direction heavy.
Long term use or insufficient oil level of power assist oil: Power assist oil used for a long time May become unclean, affecting the normal operation of the steering system; insufficient fuel can also lead to heavy steering.
Insufficient front wheel pressure: Low front wheel pressure can increase the friction between the tires and the ground, causing the steering wheel to turn heavily.
Solution:
Supplement hydraulic oil: Ensure sufficient hydraulic oil, regularly check and replenish hydraulic oil.
Repair the power pump and steering gear: If the power pump or steering gear is damaged, it is necessary to go to a professional repair shop for repair or replacement.
Cleaning or replacing filter element: Regularly clean or replace the filter element in the steering hydraulic system.
Check and replenish the vertical shaft lubricating oil: Ensure that the steering vertical shaft has sufficient lubricating oil.
Cleaning the clogged return oil filter: Regular maintenance and replacement of the return oil filter.
Replace the power oil: Regularly replace the power oil to ensure its cleanliness.
Check and supplement the front wheel pressure: Regularly check and supplement the front wheel pressure to ensure it is within the normal range.
