Preparation before hydraulic pressure measurement

(1) Hydraulic equipment 70kgf/cm2 (1000psi) 1 set of pressure gauge 400～500kgf/cm2 (5700～7100psi) 2 sets of pressure measuring equipment and 1 set of analytical instrument (2) Measurement of hydraulic oil cleanliness After air, open the cover and take out the sample oil from the tank, and then measure it with an analytical instrument. If the measured value is higher than the reference value, replace the return filter element or replace the hydraulic oil.

Where to install the pressure gauge

(1) Replace the PF1/4 plug at the instrumentation port of the main pump with a pressure measuring plug for the instrument port on the main pump, and connect a 500kgf/cm2 (7100psi) pressure gauge. (2) PF1/4 plug for the control circuit Replace the pilot gauge plug for pressure measurement and connect a 70kgf/cm2 (1000psi) pressure gauge. Note: Under normal conditions, the pressure can be measured by the following service diagnostic numbers. But in the event of a malfunction, the above pressure gauge must be installed and Proper pressure adjustment.

Pressure adjustment position

(1) Main control valve (2) Pilot safety valve The pilot safety valve PR1 is located above the gear pump connected to the main pump. (3) Rotary overload release The rotary motor is equipped with PA and PB plugs for measuring pressure, but measuring It is achieved through the instrument port.