20 - 4
Section E
Hydraulics
9803/6400
Section E
20 - 4
Issue 2*
Regulator JS200. JS240
Specifications, (continued)
Proportional Pressure Reducing Valve Specifications (Reference)
1. Specifications
(1) Max. primary pressure 40 kgf/cm
2
(2) Max, back pressure (allowable pressure) 10 kgf/cm
2
(3) Secondary pressure setting range 0-40 kgf/cm (at primary press.=40 kgf/cm
2
)
(4) Max. flow rate 6 l/min
(5) Electrical specifications
1 Rated current 800 mA
2 Coil resistance (at 20°C) 13.5 ± 0.7
3 Recommended fluctuation of
proportional solenoid current 70 ~ 75 Hz, 400 ~ 600 mApp
2. Hydraulic symbol
Checking the Proportional Solenoid Current
Service Procedure
Method 1
Refer to Self Test, Self Test Function, Pump Input Amperage.
Method 2
1 Switch engine off.
2 Pull apart bullet connector on any of the two wires leading from the Proportional Solenoid on the Hydraulic Pump.
Note: Depending on which wire is disconnected will determine the polarity of the current reading.
3 Insert an appropriate Multimeter in series between the bullet connector and the wire that has been disconnected.
4 Ensure that the Multimeter is scaled to mAmps not Amps.
5 Switch engine on to maximum revs.
6 Measure the current at the Proportional Solenoid.
*
*
*
*
*
*
*
*
*
*
*
*
*
*
To Next Page
Loading...
Need help?
General
