Cub Cadet 7532 - Manual (Page 187)

Hydraulic System 1
13
1.5.4 Control Valve
1 Structure
1. Spool Valve
It indirectly operates the unload valve and check valve.
2. Poppet
It opens only when lowering the lift arm and is closed to the sheet by poppet spring.
3. Unload Valve
It is indirectly operated by movement of the spool valve. It opens when the spool is in neutral position and
lowering to return the oil from the pump to the transmission case.
4. Check Valve
It is indirectly operated by movement of the spool valve. It opens only when lifting.
2 Specifications
Maximum Discharge 20.5L/min {5.416gal/min}
Maximum Usable Pressure 15.2MPa {155kgf/cm
2
, 2205psi}
Pressure Loss
P T (neutral)
pressure loss
20L/min when below 0.78MPa {8kgf/cm
2
, 114psi}
P C (lifting)
pressure loss
20L/min {5.28gal/min} when below 1.37MPa {14kgf/cm 2 , 199psi}
Operating Oil Multi STOU Oil Temperature: 40 °C to 50°C
Hydraulic
pressure signal
T
2
T
1
P
C
T
3
4
3
2
1
Neutral oil return
Valve body
Spool valve
Pump port
Poppet
Check valve
Poppet spring
Cylinder port
Control Valve Sectional View
Cylinder return
Pilot oil return
Spool valve
spring
Unload valve
4
2
T
1
3
Sheet
PR8W4-014