The hydraulic pump supplies the hydraulic motor with pressurized liquid. Without it, it would be impossible to power many machines used in industry, as well as in many specialized vehicles. /Hydraulic pump repair/
The hydraulic pump converts the mechanical energy supplied by the propulsion engine (internal combustion, electric) to the hydraulic energy. The energy contained in the working medium pumped to the installation under the right pressure and with the appropriate efficiency. This can be done in many ways. Hence the multitude of types of hydraulic pumps – vane, gear, screw and piston. Gear pumps are divided into single-section and multi-section, while piston pumps are divided into single-stream and double-stream. However, regardless of the type, each pump has the same task.
Symptoms of pump damage
Symptoms associated with a damaged or worn pump, whether gear or piston, are similar. Damage to the hydraulic pump will be indicated by a significant decrease in the machine’s performance. Ofcourse, after the hydraulic oil has warmed up to the operating temperature. The correct temperature range of hydraulic system operation, appropriate even for a tractor or loader is from 50-60 ° C. The system in the hydraulic pump should be assembled so as to dissipate excess heat during operation. If the temperature is higher and stays like this for a long time, it’s a sign that something is happening with the pump.
Hydraulic pump repair
The most frequently repaired hydraulic pumps are pumps from BOBCAT mini loaders. This is due to the fact that devices very often, in addition to their original function, have to perform additional occupations of the multi-vessel equipment carrier. As everyone knows, more than 20 different types of attachments can be mounted on this machine that require more or less hydraulic oil flow.
For example, a linear excavation chain requires a minimum of 80 liters of oil flow. This forces manufacturers to mount high flow pumps or other high-performance pumps. These types of pumps are under constant high load, which translates into a shortened service life of the device.