5-4 Performance test of the hydraulic pump
5-4-1 Measuring instrument
Measuring range of flow rate (
/
min)
7~ 200
Measuring range of pressure
0 ~ 34.3MPa(350kgf/cm
2
)
Measuring range of temperature (
°
C)
0 ~ 150
Port size
PF1 O ring type
Pressure gauge
49.0MPa(500kg/cm
2
), 4.9MPa(50kgf/cm
2
)
Tachometer
Diesel tachometer (digital type)
Hose for testing
5-4-2 Preparation
1. Park machine on flat ground and stop engine.
5-4-3 Connecting tester
1. Remove the hose on the pump port of the control valve.
2. Connect the removed hose to the outlet of the tester.
3. Connect the hose on the discharge of the pump to the inlet of the tester.
4. Connect pressure gauge to port measuring port.
5-4-4 Measuring procedure
Open the throttle valve of the tester and start the engine. Read the pressures on the
pressure gauge and measure the flow at that time. At the same time, record the engine
speed.
Hydraulic
pressure tester
5-4
Equivalent to the hose of 20.6MPa
(210kgf/cm
2
) high pressure (Nominal size
PF3/ 8-PF3/ 8
×
1m)
Summary of Contents for Robex 22-7
Page 1: ...SERVICE MANUAL SER NO HY2270001...
Page 2: ......
Page 4: ......
Page 8: ...2 1 Location of Serial Number 2 1...
Page 24: ......
Page 32: ......
Page 42: ...5 5 Throttle valve Hydraulic pressure tester OUT IN OPEN CLOSE...
Page 44: ......
Page 46: ...6 1 Installation 6 1 J S Left J S J S Right J S...
Page 50: ......
Page 59: ...8 JOYSTICK PILOT VALVE CONTENTS 8 1 Specification 8 2 Structure...
Page 67: ......
Page 73: ......
Page 83: ......
Page 96: ...15 IDLER CONTENTS 15 1 Standard of maintenance 15 1 1 Idler...
Page 101: ......
Page 102: ...17 TRACK ROLLER CONTENTS 17 1 Standard of maintenance 17 1 1 Track roller...