Electric stacker hoisting speed is slow for those reasons

General fork over stacker in the process of using the car, will encounter some problems, it generally encountered what kind of problem? General will encounter electric forklift truck fork lifting speed too slow and can not lift the problem. So what is the reason for this? The study found that the following main reasons.
A Fuel tank is short of oil
B Filter clogged
C The hydraulic oil temperature is too high and the hydraulic oil is too thin
D hydraulic oil leakage
E Multi-way valve stem and body wear
F The oil pump is excessively worn
G Multi-way valve to adjust the pressure properly
. If the electric stacker in the process of using the above encountered some of the circumstances, we must stop to check, so as to avoid greater damage to the machine, focusing on checking parts:
1: gear pump pressure is not reached, the use of a long time wear,
2: pressure regulating valve need to be adjusted, or simply can not adjust the wear and tear pressure, it must first check the pressure before they can determine whether the pressure regulating valve or pump problems.
3: The gap of the joystick is too large to fully control the spool.
4: hydraulic cylinder unloading serious, oil seal damage or hydraulic cylinder wear.
counter balance stackers hoist speed is usually slow for these reasons