Common Problems And Solutions For Forklifts

Q: Drive axle oil leakage

  A: Each oil seal is damaged and needs to be replaced; the gasket is damaged and needs to be replaced; the stud is loose and the bolt needs to be re-tightened; the vent plug is blocked and needs to be cleaned and removed.

Q: The drive axle is hot

  A: Lack of lubricating oil or oil deterioration, lubricating oil should be added or replaced; the bearing adjustment is too tight and needs to be adjusted again.

Q: The drive axle is noisy

A: Insufficient lubricating oil, need to add lubricating oil according to the specified requirements; excessive wear or damage of gears, bearings and other parts need to be inspected, repaired or replaced; improper adjustment, excessive gear meshing clearance or improper bearing preload, need to be re-adjusted and checked ; The differential cross shaft is loose, and the cross shaft needs to be replaced.

Q: The oil system cannot build up pressure

  A: The oil circuit is not sealed in the high and low cavities, and the internal leakage is serious. It is necessary to check the pipeline to remove the dirt and replace the seal; the outlet back pressure valve does not produce back pressure, check, repair and replace; the oil pump is damaged and needs to be replaced.

Q: Torque converter oil temperature is high

A: The guide wheel is stuck or does not rotate flexibly and needs to be inspected, repaired and replaced; the working oil does not meet the requirements and needs to be replaced with new oil; the oil level is too low or the system generates air bubbles, increase the working oil to remove the air bubbles; the oil pipe cooler in the system is blocked, it is necessary Remove the dirt in the system; damaged bearings and gears need to be replaced; serious internal leakage, check and replace the seals.

Q: The gearbox cannot be disengaged

  A: The friction plate is burning and needs to be replaced; the return spring is damaged and needs to be replaced; the oil return line is blocked and foreign objects need to be removed; the micro valve brake interlock valve does not return and the spring needs to be replaced.

Q: The gearbox is noisy

  A: Gears or bearings are worn and need to be replaced; bearing preload is insufficient and needs to be re-adjusted.

Q: Gearbox overheated

  A: The oil level is too high or too low, the oil level needs to be adjusted according to the regulations; the friction plate is burning, replace the friction plate; the bearing gear is damaged and needs to be replaced.

Q: The gearbox brake valve is stuck and does not work

  A: The return spring is invalid, replace the return spring.

Q: The gearbox cannot be put into gear

A: The gear shift pressure is not enough, the pressure of the pressure regulating valve is too low, adjust the pressure of the pressure regulating valve to the specified value; the oil pump is not working properly, the seal is not good, repair the oil pump and replace the seal; the pipeline is blocked, the oil filter element is blocked, clean and Remove the dirt or replace the filter element; the oil level is too low, the oil is insufficient, and enough oil needs to be added; the clutch seal is damaged and leaks, replace the seal; the control valve stem is not in place, adjust to the correct position.